ChatGPT answers, unedited

For a small website, there’s an important distinction between platforms that publish corporate sustainability numbers and platforms that let you verify or estimate the footprint of your particular hosting usage. The latter is much rarer.

Here are the strongest options I found:

AWS is probably the strongest choice if you need numbers attributable to your own tiny workload. Its new Sustainability service estimates environmental impact associated with your AWS usage, including carbon and water. AWS says its methodologies are based on standards including the GHG Protocol and ISO standards and are independently verified. Its earlier Customer Carbon Footprint Tool also provided region-level emissions; that tool was replaced by the newer Sustainability service in June 2026. AWS Documentation Amazon Web Services, Inc.

Azure is similarly strong. Its Emissions Impact Dashboard estimates emissions specifically associated with your Azure services and incorporates the energy requirements of the services, datacenter efficiency, regional electricity mix and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and is third-party validated, and the results can be exported. Microsoft Microsoft Learn

Google Cloud is especially interesting if your priority is the electricity source rather than merely a calculated CO₂ number. Independent analysis by the nonprofit Green Web Foundation found Google substantially more transparent than AWS or Azure about hourly carbon-free-energy use by cloud region. However, even Google doesn't disclose enough site-level information to independently reconstruct exactly how much renewable versus fossil electricity powered a particular small website. Green Web Foundation Green Web Foundation

GreenGeeks is different. It's conventional small-site/shared hosting rather than hyperscale cloud infrastructure. It publishes annual renewable-energy certificates and says the Bonneville Environmental Foundation calculates its yearly energy consumption, after which GreenGeeks purchases RECs equal to three times that consumption. That's externally checkable to an extent, but you don't get a defensible figure such as “this website consumed 4.7 kWh this month.” GreenGeeks

The verification problem

If by “verifiable” you mean an independent person should be able to verify both energy consumption and renewable sourcing, none of the big clouds is perfect.

The Green Web Foundation's 2026 investigation is quite critical here: it concludes that AWS, Microsoft and Google do not publicly disclose regional energy consumption/source information sufficiently to independently monitor exactly what kinds of energy their datacenters consume. Google scored better because of its hourly carbon-free-energy reporting, but still fell well short of complete transparency. Green Web Foundation Green Web Foundation

A useful independent layer is therefore the Green Web Foundation. It has verified hosting providers since 2006, keeps the supporting evidence in an open dataset, and lets you check whether an individual domain is served by a verified green provider. Green Web Foundation Green Web Foundation

thegreenwebfoundation.org

What I'd use

For a research project, sustainability report, or website where you want to publish something like “our hosting generated X kg CO₂e”, I'd choose AWS or Azure because you can obtain workload/account-level emissions numbers backed by documented, independently validated methodologies.

If the claim you want to make is instead “our website is hosted using verified renewable/green electricity,” I'd favor a Green Web Foundation-verified host and retain the provider's supporting renewable-energy evidence.

And if you specifically want to publish both “X kWh consumed” and “Y% of those kWh came from renewable electricity” for one small website, the shortlist becomes much smaller: the major clouds generally don't give customers sufficiently granular physical-energy data to make that claim directly. You'd normally need to estimate website energy consumption separately and combine it with independently documented datacenter/grid electricity data. Green Web Foundation

For a small website, there’s an important distinction between platforms that publish corporate sustainability numbers and platforms that let you verify or estimate the footprint of your particular hosting usage. The latter is much rarer.

Here are the strongest options I found:

AWS is probably the strongest choice if you need numbers attributable to your own tiny workload. Its new Sustainability service estimates environmental impact associated with your AWS usage, including carbon and water. AWS says its methodologies are based on standards including the GHG Protocol and ISO standards and are independently verified. Its earlier Customer Carbon Footprint Tool also provided region-level emissions; that tool was replaced by the newer Sustainability service in June 2026. AWS Documentation Amazon Web Services, Inc.

Azure is similarly strong. Its Emissions Impact Dashboard estimates emissions specifically associated with your Azure services and incorporates the energy requirements of the services, datacenter efficiency, regional electricity mix and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and is third-party validated, and the results can be exported. Microsoft Microsoft Learn

Google Cloud is especially interesting if your priority is the electricity source rather than merely a calculated CO₂ number. Independent analysis by the nonprofit Green Web Foundation found Google substantially more transparent than AWS or Azure about hourly carbon-free-energy use by cloud region. However, even Google doesn't disclose enough site-level information to independently reconstruct exactly how much renewable versus fossil electricity powered a particular small website. Green Web Foundation Green Web Foundation

GreenGeeks is different. It's conventional small-site/shared hosting rather than hyperscale cloud infrastructure. It publishes annual renewable-energy certificates and says the Bonneville Environmental Foundation calculates its yearly energy consumption, after which GreenGeeks purchases RECs equal to three times that consumption. That's externally checkable to an extent, but you don't get a defensible figure such as “this website consumed 4.7 kWh this month.” GreenGeeks

The verification problem

If by “verifiable” you mean an independent person should be able to verify both energy consumption and renewable sourcing, none of the big clouds is perfect.

The Green Web Foundation's 2026 investigation is quite critical here: it concludes that AWS, Microsoft and Google do not publicly disclose regional energy consumption/source information sufficiently to independently monitor exactly what kinds of energy their datacenters consume. Google scored better because of its hourly carbon-free-energy reporting, but still fell well short of complete transparency. Green Web Foundation Green Web Foundation

A useful independent layer is therefore the Green Web Foundation. It has verified hosting providers since 2006, keeps the supporting evidence in an open dataset, and lets you check whether an individual domain is served by a verified green provider. Green Web Foundation Green Web Foundation

thegreenwebfoundation.org

What I'd use

For a research project, sustainability report, or website where you want to publish something like “our hosting generated X kg CO₂e”, I'd choose AWS or Azure because you can obtain workload/account-level emissions numbers backed by documented, independently validated methodologies.

If the claim you want to make is instead “our website is hosted using verified renewable/green electricity,” I'd favor a Green Web Foundation-verified host and retain the provider's supporting renewable-energy evidence.

And if you specifically want to publish both “X kWh consumed” and “Y% of those kWh came from renewable electricity” for one small website, the shortlist becomes much smaller: the major clouds generally don't give customers sufficiently granular physical-energy data to make that claim directly. You'd normally need to estimate website energy consumption separately and combine it with independently documented datacenter/grid electricity data. Green Web Foundation

For a small website, there’s an important distinction between platforms that publish corporate sustainability numbers and platforms that let you verify or estimate the footprint of your particular hosting usage. The latter is much rarer.

Here are the strongest options I found:

AWS is probably the strongest choice if you need numbers attributable to your own tiny workload. Its new Sustainability service estimates environmental impact associated with your AWS usage, including carbon and water. AWS says its methodologies are based on standards including the GHG Protocol and ISO standards and are independently verified. Its earlier Customer Carbon Footprint Tool also provided region-level emissions; that tool was replaced by the newer Sustainability service in June 2026. AWS Documentation Amazon Web Services, Inc.

Azure is similarly strong. Its Emissions Impact Dashboard estimates emissions specifically associated with your Azure services and incorporates the energy requirements of the services, datacenter efficiency, regional electricity mix and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and is third-party validated, and the results can be exported. Microsoft Microsoft Learn

Google Cloud is especially interesting if your priority is the electricity source rather than merely a calculated CO₂ number. Independent analysis by the nonprofit Green Web Foundation found Google substantially more transparent than AWS or Azure about hourly carbon-free-energy use by cloud region. However, even Google doesn't disclose enough site-level information to independently reconstruct exactly how much renewable versus fossil electricity powered a particular small website. Green Web Foundation Green Web Foundation

GreenGeeks is different. It's conventional small-site/shared hosting rather than hyperscale cloud infrastructure. It publishes annual renewable-energy certificates and says the Bonneville Environmental Foundation calculates its yearly energy consumption, after which GreenGeeks purchases RECs equal to three times that consumption. That's externally checkable to an extent, but you don't get a defensible figure such as “this website consumed 4.7 kWh this month.” GreenGeeks

The verification problem

If by “verifiable” you mean an independent person should be able to verify both energy consumption and renewable sourcing, none of the big clouds is perfect.

The Green Web Foundation's 2026 investigation is quite critical here: it concludes that AWS, Microsoft and Google do not publicly disclose regional energy consumption/source information sufficiently to independently monitor exactly what kinds of energy their datacenters consume. Google scored better because of its hourly carbon-free-energy reporting, but still fell well short of complete transparency. Green Web Foundation Green Web Foundation

A useful independent layer is therefore the Green Web Foundation. It has verified hosting providers since 2006, keeps the supporting evidence in an open dataset, and lets you check whether an individual domain is served by a verified green provider. Green Web Foundation Green Web Foundation

thegreenwebfoundation.org

What I'd use

For a research project, sustainability report, or website where you want to publish something like “our hosting generated X kg CO₂e”, I'd choose AWS or Azure because you can obtain workload/account-level emissions numbers backed by documented, independently validated methodologies.

If the claim you want to make is instead “our website is hosted using verified renewable/green electricity,” I'd favor a Green Web Foundation-verified host and retain the provider's supporting renewable-energy evidence.

And if you specifically want to publish both “X kWh consumed” and “Y% of those kWh came from renewable electricity” for one small website, the shortlist becomes much smaller: the major clouds generally don't give customers sufficiently granular physical-energy data to make that claim directly. You'd normally need to estimate website energy consumption separately and combine it with independently documented datacenter/grid electricity data. Green Web Foundation

For a small website, there’s an important distinction between platforms that publish corporate sustainability numbers and platforms that let you verify or estimate the footprint of your particular hosting usage. The latter is much rarer.

Here are the strongest options I found:

AWS is probably the strongest choice if you need numbers attributable to your own tiny workload. Its new Sustainability service estimates environmental impact associated with your AWS usage, including carbon and water. AWS says its methodologies are based on standards including the GHG Protocol and ISO standards and are independently verified. Its earlier Customer Carbon Footprint Tool also provided region-level emissions; that tool was replaced by the newer Sustainability service in June 2026. AWS Documentation Amazon Web Services, Inc.

Azure is similarly strong. Its Emissions Impact Dashboard estimates emissions specifically associated with your Azure services and incorporates the energy requirements of the services, datacenter efficiency, regional electricity mix and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and is third-party validated, and the results can be exported. Microsoft Microsoft Learn

Google Cloud is especially interesting if your priority is the electricity source rather than merely a calculated CO₂ number. Independent analysis by the nonprofit Green Web Foundation found Google substantially more transparent than AWS or Azure about hourly carbon-free-energy use by cloud region. However, even Google doesn't disclose enough site-level information to independently reconstruct exactly how much renewable versus fossil electricity powered a particular small website. Green Web Foundation Green Web Foundation

GreenGeeks is different. It's conventional small-site/shared hosting rather than hyperscale cloud infrastructure. It publishes annual renewable-energy certificates and says the Bonneville Environmental Foundation calculates its yearly energy consumption, after which GreenGeeks purchases RECs equal to three times that consumption. That's externally checkable to an extent, but you don't get a defensible figure such as “this website consumed 4.7 kWh this month.” GreenGeeks

The verification problem

If by “verifiable” you mean an independent person should be able to verify both energy consumption and renewable sourcing, none of the big clouds is perfect.

The Green Web Foundation's 2026 investigation is quite critical here: it concludes that AWS, Microsoft and Google do not publicly disclose regional energy consumption/source information sufficiently to independently monitor exactly what kinds of energy their datacenters consume. Google scored better because of its hourly carbon-free-energy reporting, but still fell well short of complete transparency. Green Web Foundation Green Web Foundation

A useful independent layer is therefore the Green Web Foundation. It has verified hosting providers since 2006, keeps the supporting evidence in an open dataset, and lets you check whether an individual domain is served by a verified green provider. Green Web Foundation Green Web Foundation

thegreenwebfoundation.org

What I'd use

For a research project, sustainability report, or website where you want to publish something like “our hosting generated X kg CO₂e”, I'd choose AWS or Azure because you can obtain workload/account-level emissions numbers backed by documented, independently validated methodologies.

If the claim you want to make is instead “our website is hosted using verified renewable/green electricity,” I'd favor a Green Web Foundation-verified host and retain the provider's supporting renewable-energy evidence.

And if you specifically want to publish both “X kWh consumed” and “Y% of those kWh came from renewable electricity” for one small website, the shortlist becomes much smaller: the major clouds generally don't give customers sufficiently granular physical-energy data to make that claim directly. You'd normally need to estimate website energy consumption separately and combine it with independently documented datacenter/grid electricity data. Green Web Foundation

For a small website, there’s an important distinction between platforms that publish corporate sustainability numbers and platforms that let you verify or estimate the footprint of your particular hosting usage. The latter is much rarer.

Here are the strongest options I found:

AWS is probably the strongest choice if you need numbers attributable to your own tiny workload. Its new Sustainability service estimates environmental impact associated with your AWS usage, including carbon and water. AWS says its methodologies are based on standards including the GHG Protocol and ISO standards and are independently verified. Its earlier Customer Carbon Footprint Tool also provided region-level emissions; that tool was replaced by the newer Sustainability service in June 2026. AWS Documentation Amazon Web Services, Inc.

Azure is similarly strong. Its Emissions Impact Dashboard estimates emissions specifically associated with your Azure services and incorporates the energy requirements of the services, datacenter efficiency, regional electricity mix and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and is third-party validated, and the results can be exported. Microsoft Microsoft Learn

Google Cloud is especially interesting if your priority is the electricity source rather than merely a calculated CO₂ number. Independent analysis by the nonprofit Green Web Foundation found Google substantially more transparent than AWS or Azure about hourly carbon-free-energy use by cloud region. However, even Google doesn't disclose enough site-level information to independently reconstruct exactly how much renewable versus fossil electricity powered a particular small website. Green Web Foundation Green Web Foundation

GreenGeeks is different. It's conventional small-site/shared hosting rather than hyperscale cloud infrastructure. It publishes annual renewable-energy certificates and says the Bonneville Environmental Foundation calculates its yearly energy consumption, after which GreenGeeks purchases RECs equal to three times that consumption. That's externally checkable to an extent, but you don't get a defensible figure such as “this website consumed 4.7 kWh this month.” GreenGeeks

The verification problem

If by “verifiable” you mean an independent person should be able to verify both energy consumption and renewable sourcing, none of the big clouds is perfect.

The Green Web Foundation's 2026 investigation is quite critical here: it concludes that AWS, Microsoft and Google do not publicly disclose regional energy consumption/source information sufficiently to independently monitor exactly what kinds of energy their datacenters consume. Google scored better because of its hourly carbon-free-energy reporting, but still fell well short of complete transparency. Green Web Foundation Green Web Foundation

A useful independent layer is therefore the Green Web Foundation. It has verified hosting providers since 2006, keeps the supporting evidence in an open dataset, and lets you check whether an individual domain is served by a verified green provider. Green Web Foundation Green Web Foundation

thegreenwebfoundation.org

What I'd use

For a research project, sustainability report, or website where you want to publish something like “our hosting generated X kg CO₂e”, I'd choose AWS or Azure because you can obtain workload/account-level emissions numbers backed by documented, independently validated methodologies.

If the claim you want to make is instead “our website is hosted using verified renewable/green electricity,” I'd favor a Green Web Foundation-verified host and retain the provider's supporting renewable-energy evidence.

And if you specifically want to publish both “X kWh consumed” and “Y% of those kWh came from renewable electricity” for one small website, the shortlist becomes much smaller: the major clouds generally don't give customers sufficiently granular physical-energy data to make that claim directly. You'd normally need to estimate website energy consumption separately and combine it with independently documented datacenter/grid electricity data. Green Web Foundation

For a small website, there’s an important distinction between platforms that publish corporate sustainability numbers and platforms that let you verify or estimate the footprint of your particular hosting usage. The latter is much rarer.

Here are the strongest options I found:

AWS is probably the strongest choice if you need numbers attributable to your own tiny workload. Its new Sustainability service estimates environmental impact associated with your AWS usage, including carbon and water. AWS says its methodologies are based on standards including the GHG Protocol and ISO standards and are independently verified. Its earlier Customer Carbon Footprint Tool also provided region-level emissions; that tool was replaced by the newer Sustainability service in June 2026. AWS Documentation Amazon Web Services, Inc.

Azure is similarly strong. Its Emissions Impact Dashboard estimates emissions specifically associated with your Azure services and incorporates the energy requirements of the services, datacenter efficiency, regional electricity mix and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and is third-party validated, and the results can be exported. Microsoft Microsoft Learn

Google Cloud is especially interesting if your priority is the electricity source rather than merely a calculated CO₂ number. Independent analysis by the nonprofit Green Web Foundation found Google substantially more transparent than AWS or Azure about hourly carbon-free-energy use by cloud region. However, even Google doesn't disclose enough site-level information to independently reconstruct exactly how much renewable versus fossil electricity powered a particular small website. Green Web Foundation Green Web Foundation

GreenGeeks is different. It's conventional small-site/shared hosting rather than hyperscale cloud infrastructure. It publishes annual renewable-energy certificates and says the Bonneville Environmental Foundation calculates its yearly energy consumption, after which GreenGeeks purchases RECs equal to three times that consumption. That's externally checkable to an extent, but you don't get a defensible figure such as “this website consumed 4.7 kWh this month.” GreenGeeks

The verification problem

If by “verifiable” you mean an independent person should be able to verify both energy consumption and renewable sourcing, none of the big clouds is perfect.

The Green Web Foundation's 2026 investigation is quite critical here: it concludes that AWS, Microsoft and Google do not publicly disclose regional energy consumption/source information sufficiently to independently monitor exactly what kinds of energy their datacenters consume. Google scored better because of its hourly carbon-free-energy reporting, but still fell well short of complete transparency. Green Web Foundation Green Web Foundation

A useful independent layer is therefore the Green Web Foundation. It has verified hosting providers since 2006, keeps the supporting evidence in an open dataset, and lets you check whether an individual domain is served by a verified green provider. Green Web Foundation Green Web Foundation

thegreenwebfoundation.org

What I'd use

For a research project, sustainability report, or website where you want to publish something like “our hosting generated X kg CO₂e”, I'd choose AWS or Azure because you can obtain workload/account-level emissions numbers backed by documented, independently validated methodologies.

If the claim you want to make is instead “our website is hosted using verified renewable/green electricity,” I'd favor a Green Web Foundation-verified host and retain the provider's supporting renewable-energy evidence.

And if you specifically want to publish both “X kWh consumed” and “Y% of those kWh came from renewable electricity” for one small website, the shortlist becomes much smaller: the major clouds generally don't give customers sufficiently granular physical-energy data to make that claim directly. You'd normally need to estimate website energy consumption separately and combine it with independently documented datacenter/grid electricity data. Green Web Foundation

For a small website, there’s an important distinction between platforms that publish corporate sustainability numbers and platforms that let you verify or estimate the footprint of your particular hosting usage. The latter is much rarer.

Here are the strongest options I found:

AWS is probably the strongest choice if you need numbers attributable to your own tiny workload. Its new Sustainability service estimates environmental impact associated with your AWS usage, including carbon and water. AWS says its methodologies are based on standards including the GHG Protocol and ISO standards and are independently verified. Its earlier Customer Carbon Footprint Tool also provided region-level emissions; that tool was replaced by the newer Sustainability service in June 2026. AWS Documentation Amazon Web Services, Inc.

Azure is similarly strong. Its Emissions Impact Dashboard estimates emissions specifically associated with your Azure services and incorporates the energy requirements of the services, datacenter efficiency, regional electricity mix and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and is third-party validated, and the results can be exported. Microsoft Microsoft Learn

Google Cloud is especially interesting if your priority is the electricity source rather than merely a calculated CO₂ number. Independent analysis by the nonprofit Green Web Foundation found Google substantially more transparent than AWS or Azure about hourly carbon-free-energy use by cloud region. However, even Google doesn't disclose enough site-level information to independently reconstruct exactly how much renewable versus fossil electricity powered a particular small website. Green Web Foundation Green Web Foundation

GreenGeeks is different. It's conventional small-site/shared hosting rather than hyperscale cloud infrastructure. It publishes annual renewable-energy certificates and says the Bonneville Environmental Foundation calculates its yearly energy consumption, after which GreenGeeks purchases RECs equal to three times that consumption. That's externally checkable to an extent, but you don't get a defensible figure such as “this website consumed 4.7 kWh this month.” GreenGeeks

The verification problem

If by “verifiable” you mean an independent person should be able to verify both energy consumption and renewable sourcing, none of the big clouds is perfect.

The Green Web Foundation's 2026 investigation is quite critical here: it concludes that AWS, Microsoft and Google do not publicly disclose regional energy consumption/source information sufficiently to independently monitor exactly what kinds of energy their datacenters consume. Google scored better because of its hourly carbon-free-energy reporting, but still fell well short of complete transparency. Green Web Foundation Green Web Foundation

A useful independent layer is therefore the Green Web Foundation. It has verified hosting providers since 2006, keeps the supporting evidence in an open dataset, and lets you check whether an individual domain is served by a verified green provider. Green Web Foundation Green Web Foundation

thegreenwebfoundation.org

What I'd use

For a research project, sustainability report, or website where you want to publish something like “our hosting generated X kg CO₂e”, I'd choose AWS or Azure because you can obtain workload/account-level emissions numbers backed by documented, independently validated methodologies.

If the claim you want to make is instead “our website is hosted using verified renewable/green electricity,” I'd favor a Green Web Foundation-verified host and retain the provider's supporting renewable-energy evidence.

And if you specifically want to publish both “X kWh consumed” and “Y% of those kWh came from renewable electricity” for one small website, the shortlist becomes much smaller: the major clouds generally don't give customers sufficiently granular physical-energy data to make that claim directly. You'd normally need to estimate website energy consumption separately and combine it with independently documented datacenter/grid electricity data. Green Web Foundation

For a small website, there’s an important distinction between platforms that publish corporate sustainability numbers and platforms that let you verify or estimate the footprint of your particular hosting usage. The latter is much rarer.

Here are the strongest options I found:

AWS is probably the strongest choice if you need numbers attributable to your own tiny workload. Its new Sustainability service estimates environmental impact associated with your AWS usage, including carbon and water. AWS says its methodologies are based on standards including the GHG Protocol and ISO standards and are independently verified. Its earlier Customer Carbon Footprint Tool also provided region-level emissions; that tool was replaced by the newer Sustainability service in June 2026. AWS Documentation Amazon Web Services, Inc.

Azure is similarly strong. Its Emissions Impact Dashboard estimates emissions specifically associated with your Azure services and incorporates the energy requirements of the services, datacenter efficiency, regional electricity mix and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and is third-party validated, and the results can be exported. Microsoft Microsoft Learn

Google Cloud is especially interesting if your priority is the electricity source rather than merely a calculated CO₂ number. Independent analysis by the nonprofit Green Web Foundation found Google substantially more transparent than AWS or Azure about hourly carbon-free-energy use by cloud region. However, even Google doesn't disclose enough site-level information to independently reconstruct exactly how much renewable versus fossil electricity powered a particular small website. Green Web Foundation Green Web Foundation

GreenGeeks is different. It's conventional small-site/shared hosting rather than hyperscale cloud infrastructure. It publishes annual renewable-energy certificates and says the Bonneville Environmental Foundation calculates its yearly energy consumption, after which GreenGeeks purchases RECs equal to three times that consumption. That's externally checkable to an extent, but you don't get a defensible figure such as “this website consumed 4.7 kWh this month.” GreenGeeks

The verification problem

If by “verifiable” you mean an independent person should be able to verify both energy consumption and renewable sourcing, none of the big clouds is perfect.

The Green Web Foundation's 2026 investigation is quite critical here: it concludes that AWS, Microsoft and Google do not publicly disclose regional energy consumption/source information sufficiently to independently monitor exactly what kinds of energy their datacenters consume. Google scored better because of its hourly carbon-free-energy reporting, but still fell well short of complete transparency. Green Web Foundation Green Web Foundation

A useful independent layer is therefore the Green Web Foundation. It has verified hosting providers since 2006, keeps the supporting evidence in an open dataset, and lets you check whether an individual domain is served by a verified green provider. Green Web Foundation Green Web Foundation

thegreenwebfoundation.org

What I'd use

For a research project, sustainability report, or website where you want to publish something like “our hosting generated X kg CO₂e”, I'd choose AWS or Azure because you can obtain workload/account-level emissions numbers backed by documented, independently validated methodologies.

If the claim you want to make is instead “our website is hosted using verified renewable/green electricity,” I'd favor a Green Web Foundation-verified host and retain the provider's supporting renewable-energy evidence.

And if you specifically want to publish both “X kWh consumed” and “Y% of those kWh came from renewable electricity” for one small website, the shortlist becomes much smaller: the major clouds generally don't give customers sufficiently granular physical-energy data to make that claim directly. You'd normally need to estimate website energy consumption separately and combine it with independently documented datacenter/grid electricity data. Green Web Foundation

For a small website, there’s an important distinction between platforms that publish corporate sustainability numbers and platforms that let you verify or estimate the footprint of your particular hosting usage. The latter is much rarer.

Here are the strongest options I found:

AWS is probably the strongest choice if you need numbers attributable to your own tiny workload. Its new Sustainability service estimates environmental impact associated with your AWS usage, including carbon and water. AWS says its methodologies are based on standards including the GHG Protocol and ISO standards and are independently verified. Its earlier Customer Carbon Footprint Tool also provided region-level emissions; that tool was replaced by the newer Sustainability service in June 2026. AWS Documentation Amazon Web Services, Inc.

Azure is similarly strong. Its Emissions Impact Dashboard estimates emissions specifically associated with your Azure services and incorporates the energy requirements of the services, datacenter efficiency, regional electricity mix and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and is third-party validated, and the results can be exported. Microsoft Microsoft Learn

Google Cloud is especially interesting if your priority is the electricity source rather than merely a calculated CO₂ number. Independent analysis by the nonprofit Green Web Foundation found Google substantially more transparent than AWS or Azure about hourly carbon-free-energy use by cloud region. However, even Google doesn't disclose enough site-level information to independently reconstruct exactly how much renewable versus fossil electricity powered a particular small website. Green Web Foundation Green Web Foundation

GreenGeeks is different. It's conventional small-site/shared hosting rather than hyperscale cloud infrastructure. It publishes annual renewable-energy certificates and says the Bonneville Environmental Foundation calculates its yearly energy consumption, after which GreenGeeks purchases RECs equal to three times that consumption. That's externally checkable to an extent, but you don't get a defensible figure such as “this website consumed 4.7 kWh this month.” GreenGeeks

The verification problem

If by “verifiable” you mean an independent person should be able to verify both energy consumption and renewable sourcing, none of the big clouds is perfect.

The Green Web Foundation's 2026 investigation is quite critical here: it concludes that AWS, Microsoft and Google do not publicly disclose regional energy consumption/source information sufficiently to independently monitor exactly what kinds of energy their datacenters consume. Google scored better because of its hourly carbon-free-energy reporting, but still fell well short of complete transparency. Green Web Foundation Green Web Foundation

A useful independent layer is therefore the Green Web Foundation. It has verified hosting providers since 2006, keeps the supporting evidence in an open dataset, and lets you check whether an individual domain is served by a verified green provider. Green Web Foundation Green Web Foundation

thegreenwebfoundation.org

What I'd use

For a research project, sustainability report, or website where you want to publish something like “our hosting generated X kg CO₂e”, I'd choose AWS or Azure because you can obtain workload/account-level emissions numbers backed by documented, independently validated methodologies.

If the claim you want to make is instead “our website is hosted using verified renewable/green electricity,” I'd favor a Green Web Foundation-verified host and retain the provider's supporting renewable-energy evidence.

And if you specifically want to publish both “X kWh consumed” and “Y% of those kWh came from renewable electricity” for one small website, the shortlist becomes much smaller: the major clouds generally don't give customers sufficiently granular physical-energy data to make that claim directly. You'd normally need to estimate website energy consumption separately and combine it with independently documented datacenter/grid electricity data. Green Web Foundation

For a small website, there’s an important distinction between platforms that publish corporate sustainability numbers and platforms that let you verify or estimate the footprint of your particular hosting usage. The latter is much rarer.

Here are the strongest options I found:

AWS is probably the strongest choice if you need numbers attributable to your own tiny workload. Its new Sustainability service estimates environmental impact associated with your AWS usage, including carbon and water. AWS says its methodologies are based on standards including the GHG Protocol and ISO standards and are independently verified. Its earlier Customer Carbon Footprint Tool also provided region-level emissions; that tool was replaced by the newer Sustainability service in June 2026. AWS Documentation Amazon Web Services, Inc.

Azure is similarly strong. Its Emissions Impact Dashboard estimates emissions specifically associated with your Azure services and incorporates the energy requirements of the services, datacenter efficiency, regional electricity mix and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and is third-party validated, and the results can be exported. Microsoft Microsoft Learn

Google Cloud is especially interesting if your priority is the electricity source rather than merely a calculated CO₂ number. Independent analysis by the nonprofit Green Web Foundation found Google substantially more transparent than AWS or Azure about hourly carbon-free-energy use by cloud region. However, even Google doesn't disclose enough site-level information to independently reconstruct exactly how much renewable versus fossil electricity powered a particular small website. Green Web Foundation Green Web Foundation

GreenGeeks is different. It's conventional small-site/shared hosting rather than hyperscale cloud infrastructure. It publishes annual renewable-energy certificates and says the Bonneville Environmental Foundation calculates its yearly energy consumption, after which GreenGeeks purchases RECs equal to three times that consumption. That's externally checkable to an extent, but you don't get a defensible figure such as “this website consumed 4.7 kWh this month.” GreenGeeks

The verification problem

If by “verifiable” you mean an independent person should be able to verify both energy consumption and renewable sourcing, none of the big clouds is perfect.

The Green Web Foundation's 2026 investigation is quite critical here: it concludes that AWS, Microsoft and Google do not publicly disclose regional energy consumption/source information sufficiently to independently monitor exactly what kinds of energy their datacenters consume. Google scored better because of its hourly carbon-free-energy reporting, but still fell well short of complete transparency. Green Web Foundation Green Web Foundation

A useful independent layer is therefore the Green Web Foundation. It has verified hosting providers since 2006, keeps the supporting evidence in an open dataset, and lets you check whether an individual domain is served by a verified green provider. Green Web Foundation Green Web Foundation

thegreenwebfoundation.org

What I'd use

For a research project, sustainability report, or website where you want to publish something like “our hosting generated X kg CO₂e”, I'd choose AWS or Azure because you can obtain workload/account-level emissions numbers backed by documented, independently validated methodologies.

If the claim you want to make is instead “our website is hosted using verified renewable/green electricity,” I'd favor a Green Web Foundation-verified host and retain the provider's supporting renewable-energy evidence.

And if you specifically want to publish both “X kWh consumed” and “Y% of those kWh came from renewable electricity” for one small website, the shortlist becomes much smaller: the major clouds generally don't give customers sufficiently granular physical-energy data to make that claim directly. You'd normally need to estimate website energy consumption separately and combine it with independently documented datacenter/grid electricity data. Green Web Foundation

For a small website, there’s an important distinction between platforms that publish corporate sustainability numbers and platforms that let you verify or estimate the footprint of your particular hosting usage. The latter is much rarer.

Here are the strongest options I found:

AWS is probably the strongest choice if you need numbers attributable to your own tiny workload. Its new Sustainability service estimates environmental impact associated with your AWS usage, including carbon and water. AWS says its methodologies are based on standards including the GHG Protocol and ISO standards and are independently verified. Its earlier Customer Carbon Footprint Tool also provided region-level emissions; that tool was replaced by the newer Sustainability service in June 2026. AWS Documentation Amazon Web Services, Inc.

Azure is similarly strong. Its Emissions Impact Dashboard estimates emissions specifically associated with your Azure services and incorporates the energy requirements of the services, datacenter efficiency, regional electricity mix and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and is third-party validated, and the results can be exported. Microsoft Microsoft Learn

Google Cloud is especially interesting if your priority is the electricity source rather than merely a calculated CO₂ number. Independent analysis by the nonprofit Green Web Foundation found Google substantially more transparent than AWS or Azure about hourly carbon-free-energy use by cloud region. However, even Google doesn't disclose enough site-level information to independently reconstruct exactly how much renewable versus fossil electricity powered a particular small website. Green Web Foundation Green Web Foundation

GreenGeeks is different. It's conventional small-site/shared hosting rather than hyperscale cloud infrastructure. It publishes annual renewable-energy certificates and says the Bonneville Environmental Foundation calculates its yearly energy consumption, after which GreenGeeks purchases RECs equal to three times that consumption. That's externally checkable to an extent, but you don't get a defensible figure such as “this website consumed 4.7 kWh this month.” GreenGeeks

The verification problem

If by “verifiable” you mean an independent person should be able to verify both energy consumption and renewable sourcing, none of the big clouds is perfect.

The Green Web Foundation's 2026 investigation is quite critical here: it concludes that AWS, Microsoft and Google do not publicly disclose regional energy consumption/source information sufficiently to independently monitor exactly what kinds of energy their datacenters consume. Google scored better because of its hourly carbon-free-energy reporting, but still fell well short of complete transparency. Green Web Foundation Green Web Foundation

A useful independent layer is therefore the Green Web Foundation. It has verified hosting providers since 2006, keeps the supporting evidence in an open dataset, and lets you check whether an individual domain is served by a verified green provider. Green Web Foundation Green Web Foundation

thegreenwebfoundation.org

What I'd use

For a research project, sustainability report, or website where you want to publish something like “our hosting generated X kg CO₂e”, I'd choose AWS or Azure because you can obtain workload/account-level emissions numbers backed by documented, independently validated methodologies.

If the claim you want to make is instead “our website is hosted using verified renewable/green electricity,” I'd favor a Green Web Foundation-verified host and retain the provider's supporting renewable-energy evidence.

And if you specifically want to publish both “X kWh consumed” and “Y% of those kWh came from renewable electricity” for one small website, the shortlist becomes much smaller: the major clouds generally don't give customers sufficiently granular physical-energy data to make that claim directly. You'd normally need to estimate website energy consumption separately and combine it with independently documented datacenter/grid electricity data. Green Web Foundation

Yes, but there’s an important distinction between providers that publish company-wide sustainability claims and providers that give you verifiable data attributable to your particular website/workload.

For a small website, I’d shortlist these:

Google Cloud

cloud.google.com is probably the strongest hyperscaler if your priority is transparent energy information rather than just a “100% renewable” marketing statement.

Google publishes carbon-free-energy information and has a customer Carbon Footprint methodology for allocating emissions from Google Cloud products. Particularly useful is its work around hourly carbon-free energy, rather than merely annually purchasing enough renewable energy to match consumption.

That distinction matters: annual renewable matching does not mean the server running your site was powered by renewables at the moment electricity was consumed. The Green Web Foundation's 2026 analysis found Google significantly ahead of AWS and Azure specifically in disclosure of hourly carbon-free energy, although it also found substantial gaps in all three hyperscalers' public disclosure. Green Web Foundation Green Web Foundation

For a tiny static site, however, Google Cloud's reporting can be considerably more infrastructure than you need.

Microsoft Azure

azure.microsoft.com provides unusually good customer-specific carbon accounting.

Its Emissions Impact Dashboard calculates emissions using your Azure consumption together with factors including the energy requirements of services, datacenter efficiency, regional electricity mixes and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and was externally validated. Microsoft Microsoft Learn

There is an important practical limitation for small users: eligibility depends on the Azure billing/account arrangement. Microsoft is also retiring the Power BI-based Azure Emissions Impact Dashboard on March 31, 2027, directing customers toward Azure Carbon Optimizer. Microsoft Learn

So Azure is credible, but isn't necessarily the simplest choice for a personal site or small business landing page.

AWS

aws.amazon.com has customer carbon-footprint reporting and extensive corporate sustainability reporting, but I'd rank it behind Google if publicly auditable energy provenance is the deciding factor.

The Green Web Foundation's 2026 comparison is particularly useful here: it rated AWS very poorly on public disclosure of such things as site-level renewable generation, hourly carbon-free energy and fossil-fuel use at individual sites. Green Web Foundation

That doesn't mean AWS isn't using renewable electricity; it means the public evidence isn't sufficiently granular to independently answer many of the questions you might want to ask about a particular AWS-hosted website.

For a small website, I'd actually look beyond the hyperscalers

A useful independent standard is the app.greenweb.org.

It currently lists hundreds of hosting providers whose claims have gone through its verification process. Providers submit evidence supporting their green-energy claims, that evidence is made public, and verification is refreshed at least annually. Green Web Foundation Green Web Foundation

That gives you something quite practical:

yourdomain.com → hosting provider → independently checked renewable-energy evidence

You can also run the domain through the thegreenwebfoundation.org, and the underlying dataset/API is open. Green Web Foundation

The caveat is important: Green Web verification tells you that the hosting infrastructure meets its green-energy verification criteria; it does not tell you your individual WordPress/static site consumed exactly 1.83 kWh last month. The Foundation explicitly says its dataset does not provide hosting-provider carbon emissions. Green Web Foundation

So if by “verifiable metrics” you mean actual kWh attributable to one small website, the options are surprisingly poor. If you mean auditable evidence of renewable hosting, a Green Web Foundation–verified small host is probably the cleanest solution. If you need usage-attributed carbon accounting, Google Cloud or Azure are stronger choices.

If you're choosing a host now, I can also narrow this down to 5 inexpensive platforms for a static site/WordPress site and compare price, measured energy transparency, renewable-energy verification, and carbon reporting.

Yes, but there’s an important distinction between providers that publish company-wide sustainability claims and providers that give you verifiable data attributable to your particular website/workload.

For a small website, I’d shortlist these:

Google Cloud

cloud.google.com is probably the strongest hyperscaler if your priority is transparent energy information rather than just a “100% renewable” marketing statement.

Google publishes carbon-free-energy information and has a customer Carbon Footprint methodology for allocating emissions from Google Cloud products. Particularly useful is its work around hourly carbon-free energy, rather than merely annually purchasing enough renewable energy to match consumption.

That distinction matters: annual renewable matching does not mean the server running your site was powered by renewables at the moment electricity was consumed. The Green Web Foundation's 2026 analysis found Google significantly ahead of AWS and Azure specifically in disclosure of hourly carbon-free energy, although it also found substantial gaps in all three hyperscalers' public disclosure. Green Web Foundation Green Web Foundation

For a tiny static site, however, Google Cloud's reporting can be considerably more infrastructure than you need.

Microsoft Azure

azure.microsoft.com provides unusually good customer-specific carbon accounting.

Its Emissions Impact Dashboard calculates emissions using your Azure consumption together with factors including the energy requirements of services, datacenter efficiency, regional electricity mixes and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and was externally validated. Microsoft Microsoft Learn

There is an important practical limitation for small users: eligibility depends on the Azure billing/account arrangement. Microsoft is also retiring the Power BI-based Azure Emissions Impact Dashboard on March 31, 2027, directing customers toward Azure Carbon Optimizer. Microsoft Learn

So Azure is credible, but isn't necessarily the simplest choice for a personal site or small business landing page.

AWS

aws.amazon.com has customer carbon-footprint reporting and extensive corporate sustainability reporting, but I'd rank it behind Google if publicly auditable energy provenance is the deciding factor.

The Green Web Foundation's 2026 comparison is particularly useful here: it rated AWS very poorly on public disclosure of such things as site-level renewable generation, hourly carbon-free energy and fossil-fuel use at individual sites. Green Web Foundation

That doesn't mean AWS isn't using renewable electricity; it means the public evidence isn't sufficiently granular to independently answer many of the questions you might want to ask about a particular AWS-hosted website.

For a small website, I'd actually look beyond the hyperscalers

A useful independent standard is the app.greenweb.org.

It currently lists hundreds of hosting providers whose claims have gone through its verification process. Providers submit evidence supporting their green-energy claims, that evidence is made public, and verification is refreshed at least annually. Green Web Foundation Green Web Foundation

That gives you something quite practical:

yourdomain.com → hosting provider → independently checked renewable-energy evidence

You can also run the domain through the thegreenwebfoundation.org, and the underlying dataset/API is open. Green Web Foundation

The caveat is important: Green Web verification tells you that the hosting infrastructure meets its green-energy verification criteria; it does not tell you your individual WordPress/static site consumed exactly 1.83 kWh last month. The Foundation explicitly says its dataset does not provide hosting-provider carbon emissions. Green Web Foundation

So if by “verifiable metrics” you mean actual kWh attributable to one small website, the options are surprisingly poor. If you mean auditable evidence of renewable hosting, a Green Web Foundation–verified small host is probably the cleanest solution. If you need usage-attributed carbon accounting, Google Cloud or Azure are stronger choices.

If you're choosing a host now, I can also narrow this down to 5 inexpensive platforms for a static site/WordPress site and compare price, measured energy transparency, renewable-energy verification, and carbon reporting.

Yes, but there’s an important distinction between providers that publish company-wide sustainability claims and providers that give you verifiable data attributable to your particular website/workload.

For a small website, I’d shortlist these:

Google Cloud

cloud.google.com is probably the strongest hyperscaler if your priority is transparent energy information rather than just a “100% renewable” marketing statement.

Google publishes carbon-free-energy information and has a customer Carbon Footprint methodology for allocating emissions from Google Cloud products. Particularly useful is its work around hourly carbon-free energy, rather than merely annually purchasing enough renewable energy to match consumption.

That distinction matters: annual renewable matching does not mean the server running your site was powered by renewables at the moment electricity was consumed. The Green Web Foundation's 2026 analysis found Google significantly ahead of AWS and Azure specifically in disclosure of hourly carbon-free energy, although it also found substantial gaps in all three hyperscalers' public disclosure. Green Web Foundation Green Web Foundation

For a tiny static site, however, Google Cloud's reporting can be considerably more infrastructure than you need.

Microsoft Azure

azure.microsoft.com provides unusually good customer-specific carbon accounting.

Its Emissions Impact Dashboard calculates emissions using your Azure consumption together with factors including the energy requirements of services, datacenter efficiency, regional electricity mixes and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and was externally validated. Microsoft Microsoft Learn

There is an important practical limitation for small users: eligibility depends on the Azure billing/account arrangement. Microsoft is also retiring the Power BI-based Azure Emissions Impact Dashboard on March 31, 2027, directing customers toward Azure Carbon Optimizer. Microsoft Learn

So Azure is credible, but isn't necessarily the simplest choice for a personal site or small business landing page.

AWS

aws.amazon.com has customer carbon-footprint reporting and extensive corporate sustainability reporting, but I'd rank it behind Google if publicly auditable energy provenance is the deciding factor.

The Green Web Foundation's 2026 comparison is particularly useful here: it rated AWS very poorly on public disclosure of such things as site-level renewable generation, hourly carbon-free energy and fossil-fuel use at individual sites. Green Web Foundation

That doesn't mean AWS isn't using renewable electricity; it means the public evidence isn't sufficiently granular to independently answer many of the questions you might want to ask about a particular AWS-hosted website.

For a small website, I'd actually look beyond the hyperscalers

A useful independent standard is the app.greenweb.org.

It currently lists hundreds of hosting providers whose claims have gone through its verification process. Providers submit evidence supporting their green-energy claims, that evidence is made public, and verification is refreshed at least annually. Green Web Foundation Green Web Foundation

That gives you something quite practical:

yourdomain.com → hosting provider → independently checked renewable-energy evidence

You can also run the domain through the thegreenwebfoundation.org, and the underlying dataset/API is open. Green Web Foundation

The caveat is important: Green Web verification tells you that the hosting infrastructure meets its green-energy verification criteria; it does not tell you your individual WordPress/static site consumed exactly 1.83 kWh last month. The Foundation explicitly says its dataset does not provide hosting-provider carbon emissions. Green Web Foundation

So if by “verifiable metrics” you mean actual kWh attributable to one small website, the options are surprisingly poor. If you mean auditable evidence of renewable hosting, a Green Web Foundation–verified small host is probably the cleanest solution. If you need usage-attributed carbon accounting, Google Cloud or Azure are stronger choices.

If you're choosing a host now, I can also narrow this down to 5 inexpensive platforms for a static site/WordPress site and compare price, measured energy transparency, renewable-energy verification, and carbon reporting.

Yes, but there’s an important distinction between providers that publish company-wide sustainability claims and providers that give you verifiable data attributable to your particular website/workload.

For a small website, I’d shortlist these:

Google Cloud

cloud.google.com is probably the strongest hyperscaler if your priority is transparent energy information rather than just a “100% renewable” marketing statement.

Google publishes carbon-free-energy information and has a customer Carbon Footprint methodology for allocating emissions from Google Cloud products. Particularly useful is its work around hourly carbon-free energy, rather than merely annually purchasing enough renewable energy to match consumption.

That distinction matters: annual renewable matching does not mean the server running your site was powered by renewables at the moment electricity was consumed. The Green Web Foundation's 2026 analysis found Google significantly ahead of AWS and Azure specifically in disclosure of hourly carbon-free energy, although it also found substantial gaps in all three hyperscalers' public disclosure. Green Web Foundation Green Web Foundation

For a tiny static site, however, Google Cloud's reporting can be considerably more infrastructure than you need.

Microsoft Azure

azure.microsoft.com provides unusually good customer-specific carbon accounting.

Its Emissions Impact Dashboard calculates emissions using your Azure consumption together with factors including the energy requirements of services, datacenter efficiency, regional electricity mixes and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and was externally validated. Microsoft Microsoft Learn

There is an important practical limitation for small users: eligibility depends on the Azure billing/account arrangement. Microsoft is also retiring the Power BI-based Azure Emissions Impact Dashboard on March 31, 2027, directing customers toward Azure Carbon Optimizer. Microsoft Learn

So Azure is credible, but isn't necessarily the simplest choice for a personal site or small business landing page.

AWS

aws.amazon.com has customer carbon-footprint reporting and extensive corporate sustainability reporting, but I'd rank it behind Google if publicly auditable energy provenance is the deciding factor.

The Green Web Foundation's 2026 comparison is particularly useful here: it rated AWS very poorly on public disclosure of such things as site-level renewable generation, hourly carbon-free energy and fossil-fuel use at individual sites. Green Web Foundation

That doesn't mean AWS isn't using renewable electricity; it means the public evidence isn't sufficiently granular to independently answer many of the questions you might want to ask about a particular AWS-hosted website.

For a small website, I'd actually look beyond the hyperscalers

A useful independent standard is the app.greenweb.org.

It currently lists hundreds of hosting providers whose claims have gone through its verification process. Providers submit evidence supporting their green-energy claims, that evidence is made public, and verification is refreshed at least annually. Green Web Foundation Green Web Foundation

That gives you something quite practical:

yourdomain.com → hosting provider → independently checked renewable-energy evidence

You can also run the domain through the thegreenwebfoundation.org, and the underlying dataset/API is open. Green Web Foundation

The caveat is important: Green Web verification tells you that the hosting infrastructure meets its green-energy verification criteria; it does not tell you your individual WordPress/static site consumed exactly 1.83 kWh last month. The Foundation explicitly says its dataset does not provide hosting-provider carbon emissions. Green Web Foundation

So if by “verifiable metrics” you mean actual kWh attributable to one small website, the options are surprisingly poor. If you mean auditable evidence of renewable hosting, a Green Web Foundation–verified small host is probably the cleanest solution. If you need usage-attributed carbon accounting, Google Cloud or Azure are stronger choices.

If you're choosing a host now, I can also narrow this down to 5 inexpensive platforms for a static site/WordPress site and compare price, measured energy transparency, renewable-energy verification, and carbon reporting.

Yes, but there’s an important distinction between providers that publish company-wide sustainability claims and providers that give you verifiable data attributable to your particular website/workload.

For a small website, I’d shortlist these:

Google Cloud

cloud.google.com is probably the strongest hyperscaler if your priority is transparent energy information rather than just a “100% renewable” marketing statement.

Google publishes carbon-free-energy information and has a customer Carbon Footprint methodology for allocating emissions from Google Cloud products. Particularly useful is its work around hourly carbon-free energy, rather than merely annually purchasing enough renewable energy to match consumption.

That distinction matters: annual renewable matching does not mean the server running your site was powered by renewables at the moment electricity was consumed. The Green Web Foundation's 2026 analysis found Google significantly ahead of AWS and Azure specifically in disclosure of hourly carbon-free energy, although it also found substantial gaps in all three hyperscalers' public disclosure. Green Web Foundation Green Web Foundation

For a tiny static site, however, Google Cloud's reporting can be considerably more infrastructure than you need.

Microsoft Azure

azure.microsoft.com provides unusually good customer-specific carbon accounting.

Its Emissions Impact Dashboard calculates emissions using your Azure consumption together with factors including the energy requirements of services, datacenter efficiency, regional electricity mixes and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and was externally validated. Microsoft Microsoft Learn

There is an important practical limitation for small users: eligibility depends on the Azure billing/account arrangement. Microsoft is also retiring the Power BI-based Azure Emissions Impact Dashboard on March 31, 2027, directing customers toward Azure Carbon Optimizer. Microsoft Learn

So Azure is credible, but isn't necessarily the simplest choice for a personal site or small business landing page.

AWS

aws.amazon.com has customer carbon-footprint reporting and extensive corporate sustainability reporting, but I'd rank it behind Google if publicly auditable energy provenance is the deciding factor.

The Green Web Foundation's 2026 comparison is particularly useful here: it rated AWS very poorly on public disclosure of such things as site-level renewable generation, hourly carbon-free energy and fossil-fuel use at individual sites. Green Web Foundation

That doesn't mean AWS isn't using renewable electricity; it means the public evidence isn't sufficiently granular to independently answer many of the questions you might want to ask about a particular AWS-hosted website.

For a small website, I'd actually look beyond the hyperscalers

A useful independent standard is the app.greenweb.org.

It currently lists hundreds of hosting providers whose claims have gone through its verification process. Providers submit evidence supporting their green-energy claims, that evidence is made public, and verification is refreshed at least annually. Green Web Foundation Green Web Foundation

That gives you something quite practical:

yourdomain.com → hosting provider → independently checked renewable-energy evidence

You can also run the domain through the thegreenwebfoundation.org, and the underlying dataset/API is open. Green Web Foundation

The caveat is important: Green Web verification tells you that the hosting infrastructure meets its green-energy verification criteria; it does not tell you your individual WordPress/static site consumed exactly 1.83 kWh last month. The Foundation explicitly says its dataset does not provide hosting-provider carbon emissions. Green Web Foundation

So if by “verifiable metrics” you mean actual kWh attributable to one small website, the options are surprisingly poor. If you mean auditable evidence of renewable hosting, a Green Web Foundation–verified small host is probably the cleanest solution. If you need usage-attributed carbon accounting, Google Cloud or Azure are stronger choices.

If you're choosing a host now, I can also narrow this down to 5 inexpensive platforms for a static site/WordPress site and compare price, measured energy transparency, renewable-energy verification, and carbon reporting.

Yes, but there’s an important distinction between providers that publish company-wide sustainability claims and providers that give you verifiable data attributable to your particular website/workload.

For a small website, I’d shortlist these:

Google Cloud

cloud.google.com is probably the strongest hyperscaler if your priority is transparent energy information rather than just a “100% renewable” marketing statement.

Google publishes carbon-free-energy information and has a customer Carbon Footprint methodology for allocating emissions from Google Cloud products. Particularly useful is its work around hourly carbon-free energy, rather than merely annually purchasing enough renewable energy to match consumption.

That distinction matters: annual renewable matching does not mean the server running your site was powered by renewables at the moment electricity was consumed. The Green Web Foundation's 2026 analysis found Google significantly ahead of AWS and Azure specifically in disclosure of hourly carbon-free energy, although it also found substantial gaps in all three hyperscalers' public disclosure. Green Web Foundation Green Web Foundation

For a tiny static site, however, Google Cloud's reporting can be considerably more infrastructure than you need.

Microsoft Azure

azure.microsoft.com provides unusually good customer-specific carbon accounting.

Its Emissions Impact Dashboard calculates emissions using your Azure consumption together with factors including the energy requirements of services, datacenter efficiency, regional electricity mixes and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and was externally validated. Microsoft Microsoft Learn

There is an important practical limitation for small users: eligibility depends on the Azure billing/account arrangement. Microsoft is also retiring the Power BI-based Azure Emissions Impact Dashboard on March 31, 2027, directing customers toward Azure Carbon Optimizer. Microsoft Learn

So Azure is credible, but isn't necessarily the simplest choice for a personal site or small business landing page.

AWS

aws.amazon.com has customer carbon-footprint reporting and extensive corporate sustainability reporting, but I'd rank it behind Google if publicly auditable energy provenance is the deciding factor.

The Green Web Foundation's 2026 comparison is particularly useful here: it rated AWS very poorly on public disclosure of such things as site-level renewable generation, hourly carbon-free energy and fossil-fuel use at individual sites. Green Web Foundation

That doesn't mean AWS isn't using renewable electricity; it means the public evidence isn't sufficiently granular to independently answer many of the questions you might want to ask about a particular AWS-hosted website.

For a small website, I'd actually look beyond the hyperscalers

A useful independent standard is the app.greenweb.org.

It currently lists hundreds of hosting providers whose claims have gone through its verification process. Providers submit evidence supporting their green-energy claims, that evidence is made public, and verification is refreshed at least annually. Green Web Foundation Green Web Foundation

That gives you something quite practical:

yourdomain.com → hosting provider → independently checked renewable-energy evidence

You can also run the domain through the thegreenwebfoundation.org, and the underlying dataset/API is open. Green Web Foundation

The caveat is important: Green Web verification tells you that the hosting infrastructure meets its green-energy verification criteria; it does not tell you your individual WordPress/static site consumed exactly 1.83 kWh last month. The Foundation explicitly says its dataset does not provide hosting-provider carbon emissions. Green Web Foundation

So if by “verifiable metrics” you mean actual kWh attributable to one small website, the options are surprisingly poor. If you mean auditable evidence of renewable hosting, a Green Web Foundation–verified small host is probably the cleanest solution. If you need usage-attributed carbon accounting, Google Cloud or Azure are stronger choices.

If you're choosing a host now, I can also narrow this down to 5 inexpensive platforms for a static site/WordPress site and compare price, measured energy transparency, renewable-energy verification, and carbon reporting.

Yes, but there’s an important distinction between providers that publish company-wide sustainability claims and providers that give you verifiable data attributable to your particular website/workload.

For a small website, I’d shortlist these:

Google Cloud

cloud.google.com is probably the strongest hyperscaler if your priority is transparent energy information rather than just a “100% renewable” marketing statement.

Google publishes carbon-free-energy information and has a customer Carbon Footprint methodology for allocating emissions from Google Cloud products. Particularly useful is its work around hourly carbon-free energy, rather than merely annually purchasing enough renewable energy to match consumption.

That distinction matters: annual renewable matching does not mean the server running your site was powered by renewables at the moment electricity was consumed. The Green Web Foundation's 2026 analysis found Google significantly ahead of AWS and Azure specifically in disclosure of hourly carbon-free energy, although it also found substantial gaps in all three hyperscalers' public disclosure. Green Web Foundation Green Web Foundation

For a tiny static site, however, Google Cloud's reporting can be considerably more infrastructure than you need.

Microsoft Azure

azure.microsoft.com provides unusually good customer-specific carbon accounting.

Its Emissions Impact Dashboard calculates emissions using your Azure consumption together with factors including the energy requirements of services, datacenter efficiency, regional electricity mixes and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and was externally validated. Microsoft Microsoft Learn

There is an important practical limitation for small users: eligibility depends on the Azure billing/account arrangement. Microsoft is also retiring the Power BI-based Azure Emissions Impact Dashboard on March 31, 2027, directing customers toward Azure Carbon Optimizer. Microsoft Learn

So Azure is credible, but isn't necessarily the simplest choice for a personal site or small business landing page.

AWS

aws.amazon.com has customer carbon-footprint reporting and extensive corporate sustainability reporting, but I'd rank it behind Google if publicly auditable energy provenance is the deciding factor.

The Green Web Foundation's 2026 comparison is particularly useful here: it rated AWS very poorly on public disclosure of such things as site-level renewable generation, hourly carbon-free energy and fossil-fuel use at individual sites. Green Web Foundation

That doesn't mean AWS isn't using renewable electricity; it means the public evidence isn't sufficiently granular to independently answer many of the questions you might want to ask about a particular AWS-hosted website.

For a small website, I'd actually look beyond the hyperscalers

A useful independent standard is the app.greenweb.org.

It currently lists hundreds of hosting providers whose claims have gone through its verification process. Providers submit evidence supporting their green-energy claims, that evidence is made public, and verification is refreshed at least annually. Green Web Foundation Green Web Foundation

That gives you something quite practical:

yourdomain.com → hosting provider → independently checked renewable-energy evidence

You can also run the domain through the thegreenwebfoundation.org, and the underlying dataset/API is open. Green Web Foundation

The caveat is important: Green Web verification tells you that the hosting infrastructure meets its green-energy verification criteria; it does not tell you your individual WordPress/static site consumed exactly 1.83 kWh last month. The Foundation explicitly says its dataset does not provide hosting-provider carbon emissions. Green Web Foundation

So if by “verifiable metrics” you mean actual kWh attributable to one small website, the options are surprisingly poor. If you mean auditable evidence of renewable hosting, a Green Web Foundation–verified small host is probably the cleanest solution. If you need usage-attributed carbon accounting, Google Cloud or Azure are stronger choices.

If you're choosing a host now, I can also narrow this down to 5 inexpensive platforms for a static site/WordPress site and compare price, measured energy transparency, renewable-energy verification, and carbon reporting.

Yes, but there’s an important distinction between providers that publish company-wide sustainability claims and providers that give you verifiable data attributable to your particular website/workload.

For a small website, I’d shortlist these:

Google Cloud

cloud.google.com is probably the strongest hyperscaler if your priority is transparent energy information rather than just a “100% renewable” marketing statement.

Google publishes carbon-free-energy information and has a customer Carbon Footprint methodology for allocating emissions from Google Cloud products. Particularly useful is its work around hourly carbon-free energy, rather than merely annually purchasing enough renewable energy to match consumption.

That distinction matters: annual renewable matching does not mean the server running your site was powered by renewables at the moment electricity was consumed. The Green Web Foundation's 2026 analysis found Google significantly ahead of AWS and Azure specifically in disclosure of hourly carbon-free energy, although it also found substantial gaps in all three hyperscalers' public disclosure. Green Web Foundation Green Web Foundation

For a tiny static site, however, Google Cloud's reporting can be considerably more infrastructure than you need.

Microsoft Azure

azure.microsoft.com provides unusually good customer-specific carbon accounting.

Its Emissions Impact Dashboard calculates emissions using your Azure consumption together with factors including the energy requirements of services, datacenter efficiency, regional electricity mixes and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and was externally validated. Microsoft Microsoft Learn

There is an important practical limitation for small users: eligibility depends on the Azure billing/account arrangement. Microsoft is also retiring the Power BI-based Azure Emissions Impact Dashboard on March 31, 2027, directing customers toward Azure Carbon Optimizer. Microsoft Learn

So Azure is credible, but isn't necessarily the simplest choice for a personal site or small business landing page.

AWS

aws.amazon.com has customer carbon-footprint reporting and extensive corporate sustainability reporting, but I'd rank it behind Google if publicly auditable energy provenance is the deciding factor.

The Green Web Foundation's 2026 comparison is particularly useful here: it rated AWS very poorly on public disclosure of such things as site-level renewable generation, hourly carbon-free energy and fossil-fuel use at individual sites. Green Web Foundation

That doesn't mean AWS isn't using renewable electricity; it means the public evidence isn't sufficiently granular to independently answer many of the questions you might want to ask about a particular AWS-hosted website.

For a small website, I'd actually look beyond the hyperscalers

A useful independent standard is the app.greenweb.org.

It currently lists hundreds of hosting providers whose claims have gone through its verification process. Providers submit evidence supporting their green-energy claims, that evidence is made public, and verification is refreshed at least annually. Green Web Foundation Green Web Foundation

That gives you something quite practical:

yourdomain.com → hosting provider → independently checked renewable-energy evidence

You can also run the domain through the thegreenwebfoundation.org, and the underlying dataset/API is open. Green Web Foundation

The caveat is important: Green Web verification tells you that the hosting infrastructure meets its green-energy verification criteria; it does not tell you your individual WordPress/static site consumed exactly 1.83 kWh last month. The Foundation explicitly says its dataset does not provide hosting-provider carbon emissions. Green Web Foundation

So if by “verifiable metrics” you mean actual kWh attributable to one small website, the options are surprisingly poor. If you mean auditable evidence of renewable hosting, a Green Web Foundation–verified small host is probably the cleanest solution. If you need usage-attributed carbon accounting, Google Cloud or Azure are stronger choices.

If you're choosing a host now, I can also narrow this down to 5 inexpensive platforms for a static site/WordPress site and compare price, measured energy transparency, renewable-energy verification, and carbon reporting.

Yes, but there’s an important distinction between providers that publish company-wide sustainability claims and providers that give you verifiable data attributable to your particular website/workload.

For a small website, I’d shortlist these:

Google Cloud

cloud.google.com is probably the strongest hyperscaler if your priority is transparent energy information rather than just a “100% renewable” marketing statement.

Google publishes carbon-free-energy information and has a customer Carbon Footprint methodology for allocating emissions from Google Cloud products. Particularly useful is its work around hourly carbon-free energy, rather than merely annually purchasing enough renewable energy to match consumption.

That distinction matters: annual renewable matching does not mean the server running your site was powered by renewables at the moment electricity was consumed. The Green Web Foundation's 2026 analysis found Google significantly ahead of AWS and Azure specifically in disclosure of hourly carbon-free energy, although it also found substantial gaps in all three hyperscalers' public disclosure. Green Web Foundation Green Web Foundation

For a tiny static site, however, Google Cloud's reporting can be considerably more infrastructure than you need.

Microsoft Azure

azure.microsoft.com provides unusually good customer-specific carbon accounting.

Its Emissions Impact Dashboard calculates emissions using your Azure consumption together with factors including the energy requirements of services, datacenter efficiency, regional electricity mixes and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and was externally validated. Microsoft Microsoft Learn

There is an important practical limitation for small users: eligibility depends on the Azure billing/account arrangement. Microsoft is also retiring the Power BI-based Azure Emissions Impact Dashboard on March 31, 2027, directing customers toward Azure Carbon Optimizer. Microsoft Learn

So Azure is credible, but isn't necessarily the simplest choice for a personal site or small business landing page.

AWS

aws.amazon.com has customer carbon-footprint reporting and extensive corporate sustainability reporting, but I'd rank it behind Google if publicly auditable energy provenance is the deciding factor.

The Green Web Foundation's 2026 comparison is particularly useful here: it rated AWS very poorly on public disclosure of such things as site-level renewable generation, hourly carbon-free energy and fossil-fuel use at individual sites. Green Web Foundation

That doesn't mean AWS isn't using renewable electricity; it means the public evidence isn't sufficiently granular to independently answer many of the questions you might want to ask about a particular AWS-hosted website.

For a small website, I'd actually look beyond the hyperscalers

A useful independent standard is the app.greenweb.org.

It currently lists hundreds of hosting providers whose claims have gone through its verification process. Providers submit evidence supporting their green-energy claims, that evidence is made public, and verification is refreshed at least annually. Green Web Foundation Green Web Foundation

That gives you something quite practical:

yourdomain.com → hosting provider → independently checked renewable-energy evidence

You can also run the domain through the thegreenwebfoundation.org, and the underlying dataset/API is open. Green Web Foundation

The caveat is important: Green Web verification tells you that the hosting infrastructure meets its green-energy verification criteria; it does not tell you your individual WordPress/static site consumed exactly 1.83 kWh last month. The Foundation explicitly says its dataset does not provide hosting-provider carbon emissions. Green Web Foundation

So if by “verifiable metrics” you mean actual kWh attributable to one small website, the options are surprisingly poor. If you mean auditable evidence of renewable hosting, a Green Web Foundation–verified small host is probably the cleanest solution. If you need usage-attributed carbon accounting, Google Cloud or Azure are stronger choices.

If you're choosing a host now, I can also narrow this down to 5 inexpensive platforms for a static site/WordPress site and compare price, measured energy transparency, renewable-energy verification, and carbon reporting.

Yes, but there’s an important distinction between providers that publish company-wide sustainability claims and providers that give you verifiable data attributable to your particular website/workload.

For a small website, I’d shortlist these:

Google Cloud

cloud.google.com is probably the strongest hyperscaler if your priority is transparent energy information rather than just a “100% renewable” marketing statement.

Google publishes carbon-free-energy information and has a customer Carbon Footprint methodology for allocating emissions from Google Cloud products. Particularly useful is its work around hourly carbon-free energy, rather than merely annually purchasing enough renewable energy to match consumption.

That distinction matters: annual renewable matching does not mean the server running your site was powered by renewables at the moment electricity was consumed. The Green Web Foundation's 2026 analysis found Google significantly ahead of AWS and Azure specifically in disclosure of hourly carbon-free energy, although it also found substantial gaps in all three hyperscalers' public disclosure. Green Web Foundation Green Web Foundation

For a tiny static site, however, Google Cloud's reporting can be considerably more infrastructure than you need.

Microsoft Azure

azure.microsoft.com provides unusually good customer-specific carbon accounting.

Its Emissions Impact Dashboard calculates emissions using your Azure consumption together with factors including the energy requirements of services, datacenter efficiency, regional electricity mixes and Microsoft's renewable-energy purchases. Microsoft says the methodology covers Scopes 1–3 and was externally validated. Microsoft Microsoft Learn

There is an important practical limitation for small users: eligibility depends on the Azure billing/account arrangement. Microsoft is also retiring the Power BI-based Azure Emissions Impact Dashboard on March 31, 2027, directing customers toward Azure Carbon Optimizer. Microsoft Learn

So Azure is credible, but isn't necessarily the simplest choice for a personal site or small business landing page.

AWS

aws.amazon.com has customer carbon-footprint reporting and extensive corporate sustainability reporting, but I'd rank it behind Google if publicly auditable energy provenance is the deciding factor.

The Green Web Foundation's 2026 comparison is particularly useful here: it rated AWS very poorly on public disclosure of such things as site-level renewable generation, hourly carbon-free energy and fossil-fuel use at individual sites. Green Web Foundation

That doesn't mean AWS isn't using renewable electricity; it means the public evidence isn't sufficiently granular to independently answer many of the questions you might want to ask about a particular AWS-hosted website.

For a small website, I'd actually look beyond the hyperscalers

A useful independent standard is the app.greenweb.org.

It currently lists hundreds of hosting providers whose claims have gone through its verification process. Providers submit evidence supporting their green-energy claims, that evidence is made public, and verification is refreshed at least annually. Green Web Foundation Green Web Foundation

That gives you something quite practical:

yourdomain.com → hosting provider → independently checked renewable-energy evidence

You can also run the domain through the thegreenwebfoundation.org, and the underlying dataset/API is open. Green Web Foundation

The caveat is important: Green Web verification tells you that the hosting infrastructure meets its green-energy verification criteria; it does not tell you your individual WordPress/static site consumed exactly 1.83 kWh last month. The Foundation explicitly says its dataset does not provide hosting-provider carbon emissions. Green Web Foundation

So if by “verifiable metrics” you mean actual kWh attributable to one small website, the options are surprisingly poor. If you mean auditable evidence of renewable hosting, a Green Web Foundation–verified small host is probably the cleanest solution. If you need usage-attributed carbon accounting, Google Cloud or Azure are stronger choices.

If you're choosing a host now, I can also narrow this down to 5 inexpensive platforms for a static site/WordPress site and compare price, measured energy transparency, renewable-energy verification, and carbon reporting.

Yes. If by “verifiable metrics” you mean the provider gives you customer-level or region-level data that you can actually inspect, rather than simply saying “we use renewable energy,” the strongest options are Google Cloud, AWS, and Microsoft Azure.

1. Google Cloud — probably the best fit

Google Cloud publishes a Carbon Footprint tool that reports emissions by project, product, and region, with both location-based and market-based calculations. Google also publishes its calculation methodology, making the figures more independently scrutinizable. Google Cloud

More unusually, Google publishes CFE% (carbon-free energy percentage) for individual cloud regions. CFE% incorporates the electricity on the regional grid as well as Google's attributed clean-energy generation, and Google publishes the methodology and regional data. Google Cloud

For a small website, that means you can document something like:

Website hosted in Google Cloud region X → monthly cloud footprint → regional CFE% → regional grid carbon intensity.

That is substantially more defensible than simply claiming that the host is “green.”

cloud.google.com

2. AWS — particularly useful if you want an energy estimate

Amazon Web Services has moved its customer sustainability tooling into the AWS Sustainability service. AWS provides emissions by region/service/account and publishes the methodology. Amazon Web Services, Inc.

An interesting feature for your particular question is that AWS documents a way to estimate energy consumption from its location-based Scope 2 emissions and the applicable grid-emissions factor:

energy consumption = location-based emissions ÷ grid emissions factor. AWS Documentation

AWS also added location-based emissions to its customer reporting, which makes the connection to the electricity grid more transparent than relying solely on market-based renewable-energy accounting. Amazon Web Services, Inc.

One caveat: AWS deprecated the old Customer Carbon Footprint Tool in June 2026 in favor of AWS Sustainability, so make sure any documentation you build around it references the current service. AWS Documentation

aws.amazon.com

3. Microsoft Azure — strong accounting, but watch the tooling transition

Microsoft Azure has an Emissions Impact Dashboard that attributes emissions to Azure usage by service, region and time period. Its methodology incorporates the energy requirements of the services, datacenter efficiency, regional electricity mixes, and Microsoft's renewable-energy purchases. Microsoft Learn

Microsoft says the methodology has been independently validated and covers all three emissions scopes. Microsoft

However, there's an important 2026 wrinkle: the Azure Emissions Impact Dashboard hosted through Power BI is scheduled for retirement on March 31, 2027, with Microsoft directing users toward Azure Carbon Optimization. Microsoft Learn

microsoft.com

What I'd choose for a small website

If your objective is “I want to be able to substantiate the environmental footprint of my website,” I'd rank them:

1. Google Cloud — strongest combination of customer footprint + published regional CFE% + published methodology.
2. AWS — excellent customer-level reporting and unusually useful documentation for converting emissions into estimated energy consumption.
3. Azure — credible, independently validated accounting, but its current dashboard is being phased out.

One important distinction: none of these normally gives a tiny website owner a physical electricity meter reading for their individual website. The numbers are allocated/estimated from your cloud consumption and the provider's infrastructure and electricity data. So I would describe them as verifiable estimates, not direct measurements.

If you're evaluating hosts specifically for a low-carbon small website, I can also compare Google Cloud vs AWS vs Azure vs Cloudflare vs Vercel vs Netlify vs smaller “green hosting” companies, focusing specifically on whether their renewable-energy claims are independently verifiable and whether you can get actual per-site energy/emissions data.

For a small website, that means you can document something like:

Website hosted in Google Cloud region X → monthly cloud footprint → regional CFE% → regional grid carbon intensity.

That is substantially more defensible than simply claiming that the host is “green.”

cloud.google.com

2. AWS — particularly useful if you want an energy estimate

Amazon Web Services has moved its customer sustainability tooling into the AWS Sustainability service. AWS provides emissions by region/service/account and publishes the methodology. Amazon Web Services, Inc.

An interesting feature for your particular question is that AWS documents a way to estimate energy consumption from its location-based Scope 2 emissions and the applicable grid-emissions factor:

energy consumption = location-based emissions ÷ grid emissions factor. AWS Documentation

AWS also added location-based emissions to its customer reporting, which makes the connection to the electricity grid more transparent than relying solely on market-based renewable-energy accounting. Amazon Web Services, Inc.

One caveat: AWS deprecated the old Customer Carbon Footprint Tool in June 2026 in favor of AWS Sustainability, so make sure any documentation you build around it references the current service. AWS Documentation

aws.amazon.com

3. Microsoft Azure — strong accounting, but watch the tooling transition

Microsoft Azure has an Emissions Impact Dashboard that attributes emissions to Azure usage by service, region and time period. Its methodology incorporates the energy requirements of the services, datacenter efficiency, regional electricity mixes, and Microsoft's renewable-energy purchases. Microsoft Learn

Microsoft says the methodology has been independently validated and covers all three emissions scopes. Microsoft

However, there's an important 2026 wrinkle: the Azure Emissions Impact Dashboard hosted through Power BI is scheduled for retirement on March 31, 2027, with Microsoft directing users toward Azure Carbon Optimization. Microsoft Learn

microsoft.com

What I'd choose for a small website

If your objective is “I want to be able to substantiate the environmental footprint of my website,” I'd rank them:

1. Google Cloud — strongest combination of customer footprint + published regional CFE% + published methodology.
2. AWS — excellent customer-level reporting and unusually useful documentation for converting emissions into estimated energy consumption.
3. Azure — credible, independently validated accounting, but its current dashboard is being phased out.

One important distinction: none of these normally gives a tiny website owner a physical electricity meter reading for their individual website. The numbers are allocated/estimated from your cloud consumption and the provider's infrastructure and electricity data. So I would describe them as verifiable estimates, not direct measurements.

If you're evaluating hosts specifically for a low-carbon small website, I can also compare Google Cloud vs AWS vs Azure vs Cloudflare vs Vercel vs Netlify vs smaller “green hosting” companies, focusing specifically on whether their renewable-energy claims are independently verifiable and whether you can get actual per-site energy/emissions data.

Yes. If by “verifiable metrics” you mean more than a generic “we’re green” claim—i.e. published energy/renewables data, certificates, emissions methodology, or independently reviewed figures—there are several credible options.

Best options for a small website

The Green Web Foundation is particularly useful for comparing these because its directory requires hosting companies to submit supporting evidence and says the evidence is checked and refreshed at least annually. Green Web Green Web Foundation

My shortlist

1. Google Cloud — best for measurement

If your priority is actually measuring the environmental impact of your particular website, Google Cloud is probably the strongest large-cloud option. Its carbon-footprint system allocates emissions to individual cloud customers, and the methodology has received third-party review. The Green Web Foundation currently lists Google's environmental report, CDP response, assurance letter, and the third-party methodology review as supporting evidence. Green Web

The downside is that Google Cloud is considerably more complicated than ordinary shared hosting.

2. Hetzner — best value/verification combination

For a small site that can run on a VPS, Hetzner is particularly interesting. The Green Web Foundation has current evidence including renewable-energy certificates for Finland, an EMAS certificate for Germany, and ISO 14001 certification. Green Web Foundation

That makes it a strong choice if you want low-cost infrastructure plus independently surfaced evidence, rather than simply taking the host's marketing claim at face value.

3. GreenGeeks — easiest conventional website hosting

For WordPress or a conventional small website, GreenGeeks is easier than operating a cloud VPS. Its published evidence includes a 2025 Bonneville Environmental Foundation report and an EPA Power Partner confirmation documenting its renewable-energy matching. The company claims to match electricity consumption with 300% renewable energy. Green Web Green Web

One important distinction: renewable-energy matching isn't the same thing as your server literally consuming renewable electricity at the moment your site is running. I'd treat this as credible renewable-energy procurement rather than as a claim of 100%-renewable physical power.

4. Brownrice — strongest small-provider energy disclosure I've found

Brownrice is unusually interesting if your criterion is actual energy data rather than corporate sustainability reporting. Its Green Web Foundation entry includes a July 2024–July 2025 energy-use report that itemizes power consumption and sources, plus documentation for a 50-kW on-site solar installation. It reports a PUE of 1.15. Green Web

That's much closer to the kind of disclosure I'd want if you're doing a sustainability comparison of hosting providers.

One important distinction

I'd separate providers into three levels:

• Level 1 — renewable claim: “Our data centers use renewable energy.”
• Level 2 — documentary evidence: renewable certificates, utility documentation, sustainability reports, PUE/WUE, etc.
• Level 3 — attributable measurement: the provider can estimate your workload's electricity use or carbon emissions using a documented methodology.

If you're looking for verifiable metrics for an academic study, sustainability report, procurement policy, or website carbon accounting, I'd prioritize Level 3, which makes Google Cloud unusually attractive. If you're choosing an actual inexpensive host for a small site, Hetzner or GreenGeeks are more practical, while Brownrice is especially compelling if transparency of energy use itself is the deciding criterion.

The Green Web Foundation also provides a searchable directory of verified hosts and public supporting evidence, which is a useful starting point for expanding the comparison. Green Web

If you tell me whether the site is static, WordPress, or a small app, I can narrow this to 5–10 providers and compare $/month, renewable %, PUE/WUE, whether energy is actually measured, and whether the data is independently verified.

If your priority is actually measuring the environmental impact of your particular website, Google Cloud is probably the strongest large-cloud option. Its carbon-footprint system allocates emissions to individual cloud customers, and the methodology has received third-party review. The Green Web Foundation currently lists Google's environmental report, CDP response, assurance letter, and the third-party methodology review as supporting evidence. Green Web

The downside is that Google Cloud is considerably more complicated than ordinary shared hosting.

2. Hetzner — best value/verification combination

For a small site that can run on a VPS, Hetzner is particularly interesting. The Green Web Foundation has current evidence including renewable-energy certificates for Finland, an EMAS certificate for Germany, and ISO 14001 certification. Green Web Foundation

That makes it a strong choice if you want low-cost infrastructure plus independently surfaced evidence, rather than simply taking the host's marketing claim at face value.

3. GreenGeeks — easiest conventional website hosting

For WordPress or a conventional small website, GreenGeeks is easier than operating a cloud VPS. Its published evidence includes a 2025 Bonneville Environmental Foundation report and an EPA Power Partner confirmation documenting its renewable-energy matching. The company claims to match electricity consumption with 300% renewable energy. Green Web Green Web

One important distinction: renewable-energy matching isn't the same thing as your server literally consuming renewable electricity at the moment your site is running. I'd treat this as credible renewable-energy procurement rather than as a claim of 100%-renewable physical power.

4. Brownrice — strongest small-provider energy disclosure I've found

Brownrice is unusually interesting if your criterion is actual energy data rather than corporate sustainability reporting. Its Green Web Foundation entry includes a July 2024–July 2025 energy-use report that itemizes power consumption and sources, plus documentation for a 50-kW on-site solar installation. It reports a PUE of 1.15.

That's much closer to the kind of disclosure I'd want if you're doing a sustainability comparison of hosting providers.

One important distinction

I'd separate providers into three levels:

Yes. If by “verifiable metrics” you mean more than marketing claims—e.g. published energy consumption, renewable-energy share/procurement, emissions methodology, or third-party evidence—the strongest options fall into two groups.

Best options for small websites

The Green Web Foundation is probably the most useful starting point because it independently verifies hosting providers rather than simply repeating their sustainability claims. Its directory currently contains hundreds of verified providers, and the provider records can expose the actual supporting evidence. Green Web Foundation Green Web Foundation

For example, its U.S. directory currently shows:

• Google Cloud — Google environmental reports, an assurance letter, and a third-party review of the methodology used to allocate cloud emissions to individual customers. Green Web Foundation
• GreenGeeks — a 2025 Bonneville Environmental Foundation report plus EPA documentation supporting its renewable-energy matching claim. Green Web Foundation
• Hostinger-related infrastructure — sustainability figures reporting 100% renewable electricity in its data centers, alongside emissions data. Green Web Foundation
• Other smaller hosting providers publish things such as actual energy-use/generation reports, renewable certificates, and even real-time PUE/WUE measurements. Green Web Foundation Green Web Foundation

An important distinction

If you're trying to measure the environmental footprint of your particular small website, I would favor Google Cloud over simply choosing a provider that says “100% renewable.”

Google publishes a methodology for allocating cloud emissions to individual customers, which is much closer to a measurable website/service footprint than a generic statement that its data centers use renewable energy. The Green Web Foundation's listing specifically points to that third-party-reviewed methodology. Green Web Foundation

AWS also has substantial sustainability reporting, but the distinction between renewable-energy matching at the corporate/data-center level and the actual electricity attributable to your small workload is important.

What I'd look for

For a genuinely auditable comparison, rank providers roughly like this:

1. Customer/workload-level energy or carbon estimate
2. Published methodology for calculating it
3. Data-center energy consumption and PUE
4. Renewable-energy percentage with certificates or other evidence
5. Third-party assurance
6. Annual updates
7. Disclosure of the actual upstream data-center provider

The Green Web Foundation's verification process explicitly requires evidence from hosting companies and normally requires it to be refreshed annually. Green Web Foundation Green Web Foundation

One caveat: “100% renewable” does not necessarily mean that your server is physically running on renewable electricity every hour. It can mean renewable-energy certificates, guarantees of origin, or other matching arrangements. The Green Web Foundation itself is revising its criteria in 2026, including moving toward stronger hourly-matching requirements and away from offsets. Green Web Foundation

If your goal is specifically “I have a small website and want the lowest-carbon hosting where I can cite actual numbers in a report,” I'd shortlist Google Cloud, GreenGeeks, Hostinger, and a few Green Web–verified small VPS/shared-hosting providers, then compare them on kWh, renewable %, PUE, and CO₂e per site/request rather than on “green hosting” labels alone. Green Web Foundation

If by “verifiable metrics” you mean a provider gives you something more concrete than “we’re green”—ideally customer-level energy/carbon data, methodology, and region-level renewable-energy figures—the field narrows considerably.

1. Google Cloud — probably the strongest choice

Google gives customers a Carbon Footprint dashboard that reports emissions associated with their actual Google Cloud usage, broken down by project, product, region and month. It provides both location-based and market-based figures, and Google publishes the calculation methodology. cloud.google.comdocs.cloud.google.com

More unusually, Google publishes regional CFE% data—the percentage of electricity consumption matched to carbon-free energy on an hourly basis—alongside grid carbon intensity. That lets you make a defensible statement such as “this site runs in region X, whose 2024 average CFE score was Y%,” rather than simply saying Google buys renewable energy. cloud.google.comdocs.cloud.google.com

For a small website, this is probably the best combination of granularity + public methodology + practical accessibility.

Google Cloud Carbon Footprint

2. AWS — also very good

AWS has a Sustainability console that estimates the carbon emissions associated with your AWS services. It provides both market-based and location-based estimates. Importantly, AWS publishes its methodology and says the methodology has been independently verified by a third party. docs.aws.amazon.com

AWS also publishes information about renewable-energy matching across its data-center regions; its current reporting says electricity consumed by 25 AWS regions was matched with renewable energy sources in 2025. sustainability.aboutamazon.com

That makes AWS a good option if you want an auditable trail from:

your AWS usage → estimated emissions → methodology → regional electricity/renewables information.

AWS Sustainability

3. Cloudflare — particularly interesting for tiny websites

Cloudflare is different because it can handle static websites, CDN delivery, DNS and edge computing without you necessarily maintaining a conventional server.

Cloudflare publicly reports that it powers its operations with 100% renewable energy and publishes annual company-wide emissions inventories. www.cloudflare.com It also has a “Cloudflare Green Energy” data-localization option that routes traffic only through data centers committed to renewable-powered operations. developers.cloudflare.com

The catch: this isn't the same as Google Cloud's customer-specific carbon accounting. You generally can't point to a dashboard and say “my particular website consumed X kWh.”

So I'd rank Cloudflare very highly for minimizing/communicating infrastructure impact, but lower for site-specific measurement.

Cloudflare Impact

4. Azure

Microsoft has extensive sustainability reporting and Azure sustainability tooling. Its current documentation describes Azure workloads as using renewable energy and provides guidance for designing more sustainable workloads. learn.microsoft.com

However, if your criterion is specifically “Can a small website operator independently substantiate the energy/renewables claim for this workload?”, I'd currently put Google Cloud and AWS ahead of Azure.

What I would choose for a small website

If you're trying to make a credible sustainability claim, rather than merely choosing a provider with a green marketing page:

🥇 Google Cloud — best verifiable customer-level reporting
🥈 AWS — excellent methodology and customer-level carbon estimates
🥉 Cloudflare — excellent renewable-energy commitment, especially for static sites, but less workload-specific measurement
4. Azure — strong corporate infrastructure disclosures, less convenient for this particular use case
5. DigitalOcean — attractive for small sites, but currently weaker on verifiable customer-specific energy metrics

One important distinction: renewable-energy percentage isn't the same thing as energy consumption. A provider can match 100% of electricity consumption with renewable-energy certificates while the physical data center is still drawing electricity from a grid containing fossil generation. Google's publication of both location-based emissions and market-based emissions, plus regional CFE%, is therefore particularly useful if you want a claim that stands up to scrutiny. cloud.google.comdocs.cloud.google.com

If you're choosing a platform specifically for a small static website/blog, I can also compare Cloudflare Pages vs Google Cloud vs AWS vs Vercel vs Netlify specifically on renewable-energy evidence, per-site carbon measurability, data-center transparency, and cost.

For a small website, the hard part is that most major cloud providers publish corporate sustainability metrics (renewable energy purchases, carbon accounting, data-center efficiency), but they often do not publish a simple “your tiny website used X kWh and Y% renewable energy” number. The strongest options are providers that expose customer-level carbon reports or have independently verified green-hosting evidence.

Here are the main choices:

Best options by use case

Small static site (blog, portfolio, documentation)

Look for:

• static hosting on a major cloud provider with carbon reporting, or
• a verified green web host.

The Green Web Foundation maintains a directory of hosting providers that submit evidence of renewable-energy use and sustainability claims. Green Web Foundation Green Web Foundation

Small app/API with real usage metrics

Prefer:

1. Google Cloud (strongest published customer carbon tooling)
2. Azure
3. AWS

These let you connect emissions reporting to actual cloud consumption rather than only making a hosting-provider claim. Google Cloud CSRD Pro

If you need externally defensible sustainability claims

Prioritize:

• published methodology,
• third-party verification,
• region-level energy/carbon data,
• customer-level reporting.

Avoid relying only on phrases like “carbon neutral” or “powered by green energy” without underlying evidence.

A practical shortlist for a small website

• Most measurable: Google Cloud Google Cloud
• Most enterprise-reporting friendly: Azure / AWS CSRD Pro
• Most transparent small-hosting route: a provider listed in the Green Web Foundation directory Green Web Foundation
• Most developer-focused with infrastructure metrics: OVHcloud or Scaleway CSRD Pro

If you mean a personal website/blog rather than an app, the ranking changes quite a bit because ease of use and independent verification matter more than cloud carbon dashboards.

If by “verifiable metrics” you mean the provider publishes enough data that a small-site operator can actually estimate or report the footprint—not merely “we’re powered by renewables”—the strongest choices are Google Cloud, AWS, and Microsoft Azure.

1. Google Cloud — my first choice

Google publishes a Carbon Footprint tool that reports emissions associated with your actual cloud usage by project, product, and region, with both location-based and market-based figures. It also publishes its calculation methodology, making the numbers considerably easier to audit or explain. cloud.google.com

Google also publishes the carbon-free-energy characteristics of individual regions, which is particularly useful for a small website: you can choose a region partly on the basis of its electricity's carbon intensity rather than simply accepting a company-wide renewable-energy percentage. Google says its goal is to match every region's electricity consumption with carbon-free energy on an hourly basis by 2030. cloud.google.com

Google Cloud Carbon Footprint

Why I'd choose it: if you're trying to make a defensible statement such as “this website's hosting generated approximately X kg CO₂e during 2026”, Google gives you unusually useful underlying data.

2. AWS — particularly good if you specifically want energy estimates

AWS's Sustainability service provides customer-specific environmental-impact data. Importantly, AWS documents a method for estimating energy consumption from its location-based Scope 2 emissions and the applicable grid-emissions factor. docs.aws.amazon.comdocs.aws.amazon.comdatacenters.microsoft.comwww.thegreenwebfoundation.org

AWS says the sustainability data is available to the vast majority of accounts, including small footprints, although newly created accounts may have to wait until the month after usage is incurred before data appears. docs.aws.amazon.com

AWS Sustainability documentation

Why I'd choose it: if your definition of “verifiable” specifically includes being able to derive kWh/MWh, AWS is particularly interesting.

3. Microsoft Azure — excellent infrastructure disclosure

Microsoft publishes actual datacenter PUE and WUE figures by geography. Its current data includes FY2025 global and regional PUE, rather than simply giving a generic “efficient datacenter” claim. Microsoft also reports its renewable-energy purchasing and says it is targeting electricity consumption matched by zero-carbon energy purchases by 2030. datacenters.microsoft.com

For customers, Azure's emissions tooling incorporates the datacenter's energy requirements, efficiency, regional electricity mix, and Microsoft's renewable-energy purchases into the emissions estimate. learn.microsoft.com

There is a wrinkle for a small site: Microsoft's older Emissions Impact Dashboard is scheduled for retirement on March 31, 2027, with Azure Carbon Optimization being the replacement direction. learn.microsoft.com

Microsoft Datacenter sustainability metrics

What I would not use as the primary criterion

Be cautious with hosting companies that say things like “100% renewable energy” without publishing:

• actual energy/emissions methodology;
• region-specific electricity data;
• PUE or equivalent efficiency measurements;
• renewable-energy procurement methodology;
• customer-level or workload-level emissions estimates;
• downloadable/API-accessible data.

A provider can legitimately purchase enough renewable-energy certificates to claim 100% renewable electricity while the physical electricity serving your server still comes from a considerably different grid mix. That's why region + methodology + workload allocation matter more than a simple renewable percentage.

There is also an important distinction between renewable-energy matching and actual carbon-free electricity at the time your server operates. The Green Web Foundation's 2026 research, for example, finds substantial differences in how transparently the major clouds disclose these details. www.thegreenwebfoundation.org

My ranking for a small website

For maximum verifiability:
1. Google Cloud → 2. AWS → 3. Azure

For easiest energy-footprint calculation:
1. AWS → 2. Google Cloud → 3. Azure

For publicly documented datacenter efficiency/renewables:
1. Azure → 2. Google Cloud → 3. AWS

If your goal is specifically to host a tiny static site/blog and publish a defensible “this site uses approximately X kWh / X kg CO₂e per year” figure, I'd lean toward Google Cloud or AWS, rather than choosing a small “green hosting” company solely on its renewable-energy marketing.

If by “verifiable” you mean the provider publishes enough methodology and region-level data that you can substantiate a sustainability claim for a small site, the strongest options are Google Cloud and AWS, with Azure also useful.

1. Google Cloud — probably the best fit for a small website

Google Cloud publishes unusually useful environmental metrics.

Its Carbon Footprint reporting gives customers location-based and market-based emissions, broken down by project, product, and region, and Google publishes the methodology behind the calculations. Google Cloud Google Cloud Documentation

More importantly for your question, Google publishes CFE% (carbon-free energy percentage) for individual cloud regions on an hourly basis. That lets you say something considerably more meaningful than “Google is powered by renewables”: you can identify the region where the site runs and report its average carbon-free-energy percentage. Google Cloud

cloud.google.com
cloud.google.com

Best choice if: you want to publish a defensible statement such as “Our site runs in Google Cloud's X region, which had Y% carbon-free energy in the reported period.”

2. AWS — strongest for actual estimated energy consumption

Amazon Web Services has the AWS Sustainability Console, which replaced its Customer Carbon Footprint Tool in 2026. It reports estimated emissions by region, service, account and emissions scope, with monthly/quarterly/yearly reporting and downloadable data. Amazon Web Services, Inc. Amazon Web Services, Inc.

AWS is particularly interesting because it publishes a method for estimating energy consumption itself, rather than only CO₂: it derives estimated energy use from location-based emissions and the corresponding grid-emissions factor. AWS Documentation

AWS also publishes its calculation methodology and says the methodologies have been independently verified. AWS Documentation

aws.amazon.com
docs.aws.amazon.com

Best choice if: you specifically want to estimate kWh/energy consumption for a small site rather than relying exclusively on carbon figures.

3. Microsoft Azure — good, but less transparent for your particular use case

Microsoft Azure provides emissions reporting and sustainability tooling, including emissions data associated with Azure usage. Microsoft also publishes sustainability architecture guidance and renewable-energy claims for Azure. Microsoft Learn Microsoft Download Center

However, for a small independent website, I'd rank Azure behind Google Cloud and AWS if your priority is publicly verifiable energy + renewable metrics. Google's regional CFE data and AWS's explicit energy-estimation methodology are more directly useful for that purpose.

One important distinction

Be careful with the phrase “renewable-powered website.” Cloud providers generally don't mean that every electron consumed by your server came from a solar/wind generator at that instant.

For example, Google's CFE metric combines the electricity serving the local grid with Google's attributed clean-energy generation, and it explicitly distinguishes this from ordinary grid carbon intensity. Google Cloud

For a credible website sustainability statement, I'd therefore report three separate things:

1. Hosting provider + region
2. Estimated energy consumption or operational emissions
3. Regional carbon-free/renewable-energy metric and the methodology/date

That is much more defensible than simply putting a “100% renewable hosting” badge on the site.

My ranking for a small website:
Google Cloud > AWS > Azure for transparency and independently reproducible sustainability reporting.

If you tell me what kind of site you're hosting (static site, WordPress, small app, etc.), I can also compare Google Cloud, AWS, Azure, Cloudflare, Vercel, Netlify, and smaller green hosts specifically on whether a small customer can actually obtain and publish auditable energy/renewables numbers.

cloud.google.com
cloud.google.com

Best choice if: you want to publish a defensible statement such as “Our site runs in Google Cloud's X region, which had Y% carbon-free energy in the reported period.”

2. AWS — strongest for actual estimated energy consumption

Amazon Web Services has the AWS Sustainability Console, which replaced its Customer Carbon Footprint Tool in 2026. It reports estimated emissions by region, service, account and emissions scope, with monthly/quarterly/yearly reporting and downloadable data. Amazon Web Services, Inc. Amazon Web Services, Inc.

AWS is particularly interesting because it publishes a method for estimating energy consumption itself, rather than only CO₂: it derives estimated energy use from location-based emissions and the corresponding grid-emissions factor. AWS Documentation

AWS also publishes its calculation methodology and says the methodologies have been independently verified. AWS Documentation

aws.amazon.com
docs.aws.amazon.com

Best choice if: you specifically want to estimate kWh/energy consumption for a small site rather than relying exclusively on carbon figures.

3. Microsoft Azure — good, but less transparent for your particular use case

Microsoft Azure provides emissions reporting and sustainability tooling, including emissions data associated with Azure usage. Microsoft also publishes sustainability architecture guidance and renewable-energy claims for Azure. Microsoft Learn Microsoft Download Center

However, for a small independent website, I'd rank Azure behind Google Cloud and AWS if your priority is publicly verifiable energy + renewable metrics. Google's regional CFE data and AWS's explicit energy-estimation methodology are more directly useful for that purpose.

One important distinction

Be careful with the phrase “renewable-powered website.” Cloud providers generally don't mean that every electron consumed by your server came from a solar/wind generator at that instant.

For example, Google's CFE metric combines the electricity serving the local grid with Google's attributed clean-energy generation, and it explicitly distinguishes this from ordinary grid carbon intensity.

For a credible website sustainability statement, I'd therefore report three separate things:

Yes. If by “verifiable metrics” you mean the provider gives you workload-specific data rather than merely saying “we use renewable energy,” the strongest mainstream options are:

My picks

1. Google Cloud — best overall for a small website

Google's Carbon Footprint tool gives emissions attributable to your actual cloud usage, broken down by project, product and region, and provides both location-based and market-based figures. Google also publishes its calculation methodology, which makes the numbers substantially more auditable than a generic “100% renewable” badge. cloud.google.com

Google Cloud Carbon Footprint

For a tiny site, this is particularly useful because you can compare regions and actually see the footprint of the project hosting the site.

2. AWS — very strong, particularly if you want downloadable data

AWS's new Sustainability Console replaced its Customer Carbon Footprint Tool in June 2026. It reports estimated environmental impact by region, service and account, with Scope 1/2/3 information and both market- and location-based carbon accounting. It also supports customizable reports and API/SDK access. aws.amazon.com

AWS Sustainability Console

That's probably the best choice if your definition of “verifiable” includes being able to export the underlying numbers and retain them for your own reporting.

3. Azure — good, but there's an important transition

Microsoft's Emissions Impact Dashboard can attribute emissions to Azure usage and drill down by month, service and datacenter region. Its methodology incorporates the energy requirements of the services, datacenter efficiency, regional electricity mixes and Microsoft's renewable-energy purchases. learn.microsoft.com

However, Microsoft says the current Power BI-based dashboard will be retired March 31, 2027, with Azure Carbon Optimization becoming the alternative. learn.microsoft.com

Microsoft Azure Emissions Impact Dashboard

An important caveat

There's a big difference between:

“Our datacenters are powered by 100% renewable energy.”

and:

“Your website consumed X kWh and caused Y kg CO₂e, based on this region's electricity mix and these renewable-energy accounting assumptions.”

The latter is what I'd use if you're trying to make a defensible sustainability claim about a particular small website.

In fact, independent research from the Green Web Foundation finds that the big three have significant gaps in transparency around things such as site-level renewable generation, unbundled renewable-energy certificates, and fossil-fuel use. www.thegreenwebfoundation.org

If your priority is actual energy use, not just carbon

That's harder.

AWS, Google Cloud and Azure primarily give customers estimated emissions, rather than a meter reading saying “your website used 0.83 kWh.” For a small site, the provider generally estimates energy consumption from workload/resource utilization and datacenter characteristics.

Google is particularly explicit that its sustainability framework applies to workloads ranging from small websites to large ML systems, and recommends considering energy, carbon and water impacts in architectural decisions. docs.cloud.google.com

So if you're evaluating hosts for a small static site, WordPress site, or low-traffic web app, I'd rank them:

Google Cloud ≈ AWS > Azure for customer-level, verifiable sustainability metrics.

If instead your goal is “find me a genuinely green host for a tiny website, where the host publishes concrete renewable-energy/PUE/energy data”, that's a different shortlist—and there are some smaller European hosting companies that may be more transparent than the hyperscalers.

Yes. If by “verifiable” you mean the provider publishes enough methodology and customer-level data that you can substantiate a claim about a small site's hosting footprint, the strongest options are:

1. Google Cloud — probably the best fit

Google Cloud Carbon Footprint provides customer-specific emissions data by project, product and region, with both location-based and market-based calculations. Google also publishes its calculation methodology, explicitly making the data intended for verification against the GHG Protocol. cloud.google.com

The particularly useful feature for a small website is that Google publishes regional Carbon Free Energy (CFE) percentages and grid carbon intensity. That lets you say not merely “Google uses renewable energy,” but something more defensible such as “the site runs in region X, whose published CFE/grid-carbon characteristics are Y.” cloud.google.com

Best choice if you need: a defensible, project-level sustainability measurement for a small site.

2. AWS — strongest if you want an API

AWS Sustainability documentation now provides programmatic access to estimated environmental-impact data. You can retrieve emissions and water data and break it down by AWS account, region and service, using both location-based and market-based methodologies. The documentation was updated in July 2026. docs.aws.amazon.com

That's unusually useful if you're trying to produce an auditable report for a small website rather than simply displaying a hosting company's “green” badge.

Best choice if you need: reproducible data you can pull automatically and retain.

3. Microsoft Azure — very good, but with a caveat

Microsoft's Emissions Impact Dashboard provides emissions associated with Azure usage, including breakdowns by month, service and datacenter region. cloud.google.comcloud.google.comazure.microsoft.comdatacenters.microsoft.com Microsoft also publishes datacenter-level energy-efficiency metrics such as PUE/WUE and renewable-energy commitments. datacenters.microsoft.com

However, there's an important 2026 caveat: Microsoft says the Azure Emissions Impact Dashboard hosted through Power BI will be retired March 31, 2027, with Azure Carbon Optimization being the replacement direction. learn.microsoft.com

So I'd choose Azure if you're already using Microsoft infrastructure, but Google Cloud or AWS would be my first choices for a new project specifically concerned with long-term verifiability.

What I would not rely on

Many “green hosting” companies advertise things like:

• “100% renewable energy”
• “carbon-neutral hosting”
• “powered by renewable energy”
• “eco-friendly data centers”

Those statements can be perfectly legitimate, but they're often less useful for verification because they don't give you the site's actual energy consumption, region-specific electricity mix, calculation methodology, or customer-level emissions.

There's also an important distinction between renewable-energy procurement and the physical electricity consumed by your server. Market-based accounting can reflect renewable-energy purchases even when the physical grid electricity at the datacenter is different. Google, for example, explicitly exposes both location- and market-based figures, which is one reason I rank it highly for this purpose. cloud.google.com

My ranking for a small website

If sustainability reporting is the priority:

1. 🥇 Google Cloud — best combination of granular data + regional renewable/energy metrics + published methodology.
2. 🥈 AWS — excellent customer-level/API data and increasingly strong sustainability tooling.
3. 🥉 Azure — strong reporting, but the current dashboard transition makes it less attractive for a new sustainability-focused deployment.
4. Specialist “green hosting” providers — potentially much simpler and cheaper, but generally weaker on independently reproducible metrics.

One nuance: none of these platforms generally gives you a little meter saying “your website consumed 0.37 kWh this month.” The cloud providers typically estimate your share of infrastructure energy/emissions from resource usage and datacenter characteristics. For a small site, that distinction matters if you're making a rigorous environmental claim.

If you tell me roughly what the site is (static site, WordPress, small VPS, serverless, etc.), I can narrow this down to the 3–5 cheapest hosting setups that also give you the strongest verifiable energy/renewables evidence.

If your goal is to host a small website while being able to point to publicly verifiable energy and renewable-energy metrics, there are only a handful of platforms that go beyond marketing claims.

Here's how the major options compare:

Best choices

1. Google Cloud (most transparent)

Google is the clear leader if you want verifiable operational metrics.

It publishes:

• average Carbon-Free Energy percentage (CFE%) for every cloud region
• regional grid carbon intensity
• yearly updates
• methodology explaining how CFE is calculated

This lets you deliberately deploy your website in cleaner regions rather than relying on a company-wide renewable claim. Google reports hourly carbon-free energy matching progress toward its 24/7 carbon-free energy goal. cloud.google.com

This level of transparency is unusual among cloud providers.

2. Hostinger

For someone running a WordPress site or simple static website, Hostinger publishes an annual sustainability report including:

• Scope 1–3 emissions
• renewable electricity matching
• energy sourcing approach
• ESG metrics

That's significantly more detailed than many shared hosting companies provide. www.hostinger.com

3. Green Web Foundation verified hosts

Rather than trusting provider marketing, you can use the Green Web Foundation.

They independently verify hosting providers based on submitted evidence and maintain:

• a public dataset
• a searchable directory
• documentation describing exactly what evidence providers must submit

The verification process increasingly encourages disclosure of hourly fossil-free energy matching while still accepting annual matching during the transition period. www.thegreenwebfoundation.org

This is probably the best independent source if you care about credibility.

AWS and Azure

Both companies publish extensive sustainability reports and renewable-energy commitments.

However:

• Azure publishes strong corporate sustainability metrics but offers less customer-facing regional energy data than Google. www.itpro.com
• AWS reports progress toward renewable energy and is a major corporate purchaser of renewable electricity, but it does not expose the same kind of region-level operational carbon metrics that Google does. www.reuters.com

What counts as "verifiable"?

The strongest evidence, in descending order, is:

1. Region-level operational metrics (Google Cloud CFE%)
2. Audited sustainability reports (Hostinger, Azure, AWS)
3. Independent verification (Green Web Foundation)
4. Marketing claims ("powered by green energy") without supporting disclosures

Recommendation by use case

• Maximum transparency: Google Cloud
• Simple, inexpensive hosting with published ESG reporting: Hostinger
• Independent verification regardless of provider: use a Green Web Foundation–verified host
• Already using AWS or Azure: they're reasonable sustainability choices, but you won't get the same customer-visible energy metrics that Google publishes.

If you're looking for a small static website (e.g. a portfolio, blog, or documentation site), Google Cloud (via Firebase Hosting or Cloud Run) paired with a low-carbon region is arguably the strongest option from a transparency standpoint, while a Green Web Foundation–verified shared host is often the simplest and cheapest.

If your goal is to host a small website while being able to point to publicly verifiable energy and renewable-energy metrics, there are only a handful of platforms that go beyond marketing claims.

Here's how the major options compare:

Best choices

1. Google Cloud (most transparent)

Google is the clear leader if you want verifiable operational metrics.

It publishes:

• average Carbon-Free Energy percentage (CFE%) for every cloud region
• regional grid carbon intensity
• yearly updates
• methodology explaining how CFE is calculated

This lets you deliberately deploy your website in cleaner regions rather than relying on a company-wide renewable claim. Google reports hourly carbon-free energy matching progress toward its 24/7 carbon-free energy goal. cloud.google.com

This level of transparency is unusual among cloud providers.

2. Hostinger

For someone running a WordPress site or simple static website, Hostinger publishes an annual sustainability report including:

• Scope 1–3 emissions
• renewable electricity matching
• energy sourcing approach
• ESG metrics

That's significantly more detailed than many shared hosting companies provide. www.hostinger.com

3. Green Web Foundation verified hosts

Rather than trusting provider marketing, you can use the Green Web Foundation.

They independently verify hosting providers based on submitted evidence and maintain:

• a public dataset
• a searchable directory
• documentation describing exactly what evidence providers must submit

The verification process increasingly encourages disclosure of hourly fossil-free energy matching while still accepting annual matching during the transition period. www.thegreenwebfoundation.org

This is probably the best independent source if you care about credibility.

AWS and Azure

Both companies publish extensive sustainability reports and renewable-energy commitments.

However:

• Azure publishes strong corporate sustainability metrics but offers less customer-facing regional energy data than Google. www.itpro.com
• AWS reports progress toward renewable energy and is a major corporate purchaser of renewable electricity, but it does not expose the same kind of region-level operational carbon metrics that Google does. www.reuters.com

What counts as "verifiable"?

The strongest evidence, in descending order, is:

1. Region-level operational metrics (Google Cloud CFE%)
2. Audited sustainability reports (Hostinger, Azure, AWS)
3. Independent verification (Green Web Foundation)
4. Marketing claims ("powered by green energy") without supporting disclosures

Recommendation by use case

• Maximum transparency: Google Cloud
• Simple, inexpensive hosting with published ESG reporting: Hostinger
• Independent verification regardless of provider: use a Green Web Foundation–verified host
• Already using AWS or Azure: they're reasonable sustainability choices, but you won't get the same customer-visible energy metrics that Google publishes.

If you're looking for a small static website (e.g. a portfolio, blog, or documentation site), Google Cloud (via Firebase Hosting or Cloud Run) paired with a low-carbon region is arguably the strongest option from a transparency standpoint, while a Green Web Foundation–verified shared host is often the simplest and cheapest.

If your goal is to host a small website while being able to point to publicly verifiable energy and renewable-energy metrics, there are only a handful of platforms that go beyond marketing claims.

Here's how the major options compare:

Best choices

1. Google Cloud (most transparent)

Google is the clear leader if you want verifiable operational metrics.

It publishes:

• average Carbon-Free Energy percentage (CFE%) for every cloud region
• regional grid carbon intensity
• yearly updates
• methodology explaining how CFE is calculated

This lets you deliberately deploy your website in cleaner regions rather than relying on a company-wide renewable claim. Google reports hourly carbon-free energy matching progress toward its 24/7 carbon-free energy goal. cloud.google.com

This level of transparency is unusual among cloud providers.

2. Hostinger

For someone running a WordPress site or simple static website, Hostinger publishes an annual sustainability report including:

• Scope 1–3 emissions
• renewable electricity matching
• energy sourcing approach
• ESG metrics

That's significantly more detailed than many shared hosting companies provide. www.hostinger.com

3. Green Web Foundation verified hosts

Rather than trusting provider marketing, you can use the Green Web Foundation.

They independently verify hosting providers based on submitted evidence and maintain:

• a public dataset
• a searchable directory
• documentation describing exactly what evidence providers must submit

The verification process increasingly encourages disclosure of hourly fossil-free energy matching while still accepting annual matching during the transition period. www.thegreenwebfoundation.org

This is probably the best independent source if you care about credibility.

AWS and Azure

Both companies publish extensive sustainability reports and renewable-energy commitments.

However:

• Azure publishes strong corporate sustainability metrics but offers less customer-facing regional energy data than Google. www.itpro.com
• AWS reports progress toward renewable energy and is a major corporate purchaser of renewable electricity, but it does not expose the same kind of region-level operational carbon metrics that Google does. www.reuters.com

What counts as "verifiable"?

The strongest evidence, in descending order, is:

1. Region-level operational metrics (Google Cloud CFE%)
2. Audited sustainability reports (Hostinger, Azure, AWS)
3. Independent verification (Green Web Foundation)
4. Marketing claims ("powered by green energy") without supporting disclosures

Recommendation by use case

• Maximum transparency: Google Cloud
• Simple, inexpensive hosting with published ESG reporting: Hostinger
• Independent verification regardless of provider: use a Green Web Foundation–verified host
• Already using AWS or Azure: they're reasonable sustainability choices, but you won't get the same customer-visible energy metrics that Google publishes.

If you're looking for a small static website (e.g. a portfolio, blog, or documentation site), Google Cloud (via Firebase Hosting or Cloud Run) paired with a low-carbon region is arguably the strongest option from a transparency standpoint, while a Green Web Foundation–verified shared host is often the simplest and cheapest.

If by “verifiable metrics” you mean more than marketing claims—i.e. published methodology, energy/carbon numbers, data-center efficiency, and renewable-energy data that you can cite—there are a few strong choices.

My top three

1. Scaleway — probably the best fit if you specifically want a small website.

Scaleway's Environmental Footprint Calculator gives environmental metrics for your infrastructure and updates them daily. Its calculation methodology explicitly accounts for the energy consumption of the underlying hypervisors, the particular data center's PUE, and the country's electricity mix. www.scaleway.com

It also publishes data-center-by-data-center PUE and power-source information. For example, its 2024 figures identify particular Paris, Amsterdam and Warsaw facilities and state their power sources as 100% wind/hydro via Guarantees of Origin. www.scaleway.comwww.scaleway.com

Scaleway environmental footprint documentation

2. Google Cloud — best if you want particularly strong public documentation.

Google provides customer carbon data by project, product and region, with both location-based and market-based emissions, and publishes the calculation methodology. cloud.google.com

More unusually, Google publishes regional CFE% (carbon-free-energy percentage) and grid carbon intensity. CFE% is calculated hourly and is intended to indicate the proportion of energy on which an application is effectively running carbon-free. cloud.google.com

That makes it particularly useful if your goal is something like “I host this website in region X because its published electricity characteristics are better.”

Google Cloud Carbon Footprint

3. AWS — best for a mainstream provider with programmatic reporting.

As of 2026, AWS has replaced its older Customer Carbon Footprint Tool with the AWS Sustainability service. It provides estimated emissions by account, region and service, with both location- and market-based methods, and exposes the information through an API. docs.aws.amazon.com

AWS also publishes which regions have their electricity consumption matched with renewable sources and explains its renewable-energy methodology. sustainability.aboutamazon.com

AWS Sustainability

Two interesting smaller-provider alternatives

OVHcloud is unusually transparent at the infrastructure level. Its 2025 reporting gives a group PUE of 1.24, and its published methodology explains how server power consumption is estimated and validated against actual measurements. It also publishes renewable-energy factors and data-center-level PUE. corporate.ovhcloud.com

OVHcloud environmental reporting

Hetzner is particularly attractive for a tiny VPS/dedicated-server site. It publishes an average PUE around 1.12–1.13, says its German electricity is sourced 100% from hydropower, and publishes typical power consumption for individual dedicated-server models. www.hetzner.com

Hetzner sustainability information

One important caveat

“100% renewable” isn't the same thing as “this website consumed 100% renewable electricity.” Providers often achieve the former through renewable-energy certificates, Guarantees of Origin, PPAs, or market-based accounting. For a genuinely auditable comparison, I'd look for both:

1. Workload-specific energy/carbon estimation — preferably kWh or a transparent calculation that can be converted to it.
2. Location-based electricity intensity — e.g. gCO₂e/kWh.
3. Data-center PUE.
4. Renewable-energy percentage and accounting method.
5. Published methodology, ideally independently reviewed or based on a recognized standard.

On that stricter definition, Scaleway and Google Cloud are probably the strongest matches, with AWS close behind. For a very small static site or VPS, Hetzner is compelling if infrastructure-level power figures are sufficient.

If you're trying to choose a provider specifically for a low-energy/low-carbon personal or small-business website, I can also compare Cloudflare Pages, GitHub Pages, Netlify, Vercel, AWS, Google Cloud, Scaleway, and Hetzner on what they actually disclose rather than their sustainability marketing.

For a small website, the best choices are usually providers that publish either:

1. customer-level energy/carbon data (best for verification), or
2. auditable renewable-energy claims (better than vague “green hosting” badges).

Here are the main options:

A useful independent verification layer is the Green Web Foundation. It maintains a directory and verification tools for hosts that document renewable-energy use, rather than relying only on provider marketing claims. docs.aws.amazon.comwww.thegreenwebfoundation.org

What to look for when choosing a host

For a small website, prioritize:

• Renewable energy evidence: PPAs, renewable electricity matching, or data-center energy mix—not just “carbon neutral.”
• Location transparency: a provider should identify the region/data center where your workload runs.
• Energy/carbon methodology: published calculation methods are a strong signal.
• Customer-level reporting: ideal if you need to prove impact to customers or auditors.
• Simple deployment: a very efficient static site on a green host can outperform a poorly optimized app on a “green” cloud.

For a small brochure site, blog, or documentation site, I would generally look first at a green-verified managed host or static hosting provider. For an app with databases or backend compute, the major clouds (Google Cloud, AWS, Azure) provide stronger measurement tools. docs.cloud.google.comgreensoftware.foundation

If your goal is to host a small website while being able to point to publicly verifiable energy and renewable-energy metrics, there are only a handful of platforms that go beyond marketing claims.

Here's how the major options compare:

Best choices

1. Google Cloud (most transparent)

Google is the clear leader if you want verifiable operational metrics.

It publishes:

• average Carbon-Free Energy percentage (CFE%) for every cloud region
• regional grid carbon intensity
• yearly updates
• methodology explaining how CFE is calculated

This lets you deliberately deploy your website in cleaner regions rather than relying on a company-wide renewable claim. Google reports hourly carbon-free energy matching progress toward its 24/7 carbon-free energy goal. cloud.google.com

This level of transparency is unusual among cloud providers.

2. Hostinger

For someone running a WordPress site or simple static website, Hostinger publishes an annual sustainability report including:

• Scope 1–3 emissions
• renewable electricity matching
• energy sourcing approach
• ESG metrics

That's significantly more detailed than many shared hosting companies provide. www.hostinger.com

3. Green Web Foundation verified hosts

Rather than trusting provider marketing, you can use the Green Web Foundation.

They independently verify hosting providers based on submitted evidence and maintain:

• a public dataset
• a searchable directory
• documentation describing exactly what evidence providers must submit

The verification process increasingly encourages disclosure of hourly fossil-free energy matching while still accepting annual matching during the transition period. www.thegreenwebfoundation.org

This is probably the best independent source if you care about credibility.

AWS and Azure

Both companies publish extensive sustainability reports and renewable-energy commitments.

However:

• Azure publishes strong corporate sustainability metrics but offers less customer-facing regional energy data than Google. www.itpro.com
• AWS reports progress toward renewable energy and is a major corporate purchaser of renewable electricity, but it does not expose the same kind of region-level operational carbon metrics that Google does. www.reuters.com

What counts as "verifiable"?

The strongest evidence, in descending order, is:

1. Region-level operational metrics (Google Cloud CFE%)
2. Audited sustainability reports (Hostinger, Azure, AWS)
3. Independent verification (Green Web Foundation)
4. Marketing claims ("powered by green energy") without supporting disclosures

Recommendation by use case

• Maximum transparency: Google Cloud
• Simple, inexpensive hosting with published ESG reporting: Hostinger
• Independent verification regardless of provider: use a Green Web Foundation–verified host
• Already using AWS or Azure: they're reasonable sustainability choices, but you won't get the same customer-visible energy metrics that Google publishes.

If you're looking for a small static website (e.g. a portfolio, blog, or documentation site), Google Cloud (via Firebase Hosting or Cloud Run) paired with a low-carbon region is arguably the strongest option from a transparency standpoint, while a Green Web Foundation–verified shared host is often the simplest and cheapest.

Yes. If by “verifiable metrics” you mean the provider publishes enough methodology and customer/workload-level data that you can actually substantiate a claim about your site—not merely “we use renewable energy”—there are a few clear leaders.

1. Google Cloud — strongest evidence trail

Google Cloud is probably the best choice if your goal is to be able to say something like “this website's hosting generated X kg CO₂e, using this methodology, in this region.”

Its Carbon Footprint reporting provides emissions by project, product, region and month, with both location-based and market-based accounting. Google also publishes its calculation methodology. cloud.google.com

More unusually, Google publishes CFE% (carbon-free energy percentage) for individual regions. For example, its 2024 figures put Finland at 98%, Stockholm at 100%, and Belgium at 84%, alongside grid-carbon-intensity figures. cloud.google.comcloud.google.comwww.greengeeks.com

Google Cloud Carbon Footprint
Google Cloud regional carbon-free-energy data

Caveat: CFE% is not the same thing as “the electricity physically powering my server was renewable.” Google explicitly accounts for its carbon-free-energy investments when calculating the metric. That's important if you're making a rigorous sustainability claim. cloud.google.comcloud.google.comwww.greengeeks.com

2. AWS — excellent if you want machine-readable evidence

AWS's current Sustainability service provides estimated environmental impact for your AWS usage, broken down by account, region and service, with monthly/quarterly/yearly granularity. It supports CSV reports and an API, making it particularly useful if you're building your own evidence or sustainability dashboard. docs.aws.amazon.com

The current service replaced AWS's older Customer Carbon Footprint Tool in June 2026. aws.amazon.com

AWS Sustainability documentation
AWS Sustainability API

For a small website: AWS can be overkill operationally, but if you already use S3/Lambda/EC2/etc., it's one of the better options for obtaining defensible usage-specific emissions data.

3. Hetzner — interesting for actual energy-use transparency

Hetzner is worth looking at if you want something closer to physical energy consumption rather than just carbon accounting.

It reports an average PUE of 1.13 for its data centers in the relevant disclosure, says its German locations obtain 100% of their electricity from hydropower, and publishes typical server power consumption in watts for its dedicated-server models. docs.hetzner.com

Hetzner sustainability and energy data

That makes it particularly interesting for a technically minded small-site owner: you can combine server power figures + PUE + electricity sourcing rather than relying entirely on a provider's generic “green hosting” badge.

4. GreenGeeks — easiest green shared hosting

For a conventional small WordPress/static site where you don't want to manage a VPS, GreenGeeks is one of the more straightforward options. It publicly states that it matches 300% of its energy usage with renewable-energy purchases and describes its partnership with the Bonneville Environmental Foundation. www.greengeeks.com

GreenGeeks hosting and renewable-energy information

The limitation is granularity: “300% energy match” is useful evidence about the provider's renewable-energy program, but it isn't equivalent to getting a monthly electricity/emissions measurement specifically attributable to your website.

One important distinction

I'd separate these into three levels:

A. Provider-level claim

“Our host purchases renewable energy.”

Easy to find, but comparatively weak evidence.

B. Infrastructure-level metrics

“This data center has PUE 1.13 and uses X type of electricity.”

Much better. Hetzner is a good example.

C. Workload-level accounting

“My account/project consumed resources producing X kg CO₂e during this period.”

Best for verifiability. Google Cloud and AWS are the strongest options I found for this.

If you're choosing a host specifically because you want to publish a credible “this website's energy/carbon footprint” statement, I'd rank them Google Cloud > AWS > Hetzner > GreenGeeks. The first two give you substantially better customer-specific evidence; Hetzner gives unusually useful infrastructure/energy figures; GreenGeeks is simpler but relies more on provider-level renewable matching.

One caveat: energy use (kWh) and carbon emissions (kg CO₂e) aren't interchangeable. A provider can have excellent renewable-energy claims while giving you little information about the actual kWh attributable to your site. If energy consumption itself is your key metric, rather than carbon, that changes the ranking somewhat.

If by “verifiable metrics” you mean the provider publishes enough primary data to independently substantiate claims about electricity, renewable energy, efficiency, and ideally the footprint of your actual workload, the strongest options I’d look at are:

My picks

1. Google Cloud — best if you want to substantiate the footprint of a small website.

Google publishes regional CFE% (carbon-free energy percentage) and grid carbon intensity, and its Carbon Footprint product lets customers see emissions by project, product and region, with both location- and market-based calculations. It also publishes its calculation methodology. cloud.google.com

That's unusually useful for a small website because you can say something much more defensible than “we run on renewable energy.” You can identify the region, its CFE percentage/carbon intensity, and the emissions attributed to your project.

Google Cloud Carbon Footprint

2. AWS — also very strong for actual workload-level measurement.

AWS now has a Sustainability service/API that provides estimated environmental impact data for your AWS usage, including carbon emissions and water allocation, with dimensions such as account, region and service. It supports both location- and market-based emissions methodologies. docs.aws.amazon.com

AWS Sustainability documentation

3. OVHcloud — arguably the most interesting alternative if your priority is provider-level physical-energy transparency.

OVHcloud publishes PUE, WUE, CUE and REF (Renewable Energy Factor) and provides environmental indicators at the data-center level. Its FY2025 reporting says its PUE was 1.24, and it reports renewable-electricity sourcing and coverage in considerable detail. corporate.ovhcloud.com

It also has an Environmental Impact Tracker intended to let customers understand the environmental impact of their actual cloud consumption. corporate.ovhcloud.com

OVHcloud sustainability information

4. Hetzner — excellent for a small VPS/dedicated server if you want simple, tangible numbers.

Hetzner publishes an average PUE of 1.13, states that its German locations use 100% hydropower, and—particularly useful for a small site—publishes typical power consumption in watts for its dedicated servers. docs.hetzner.com

That makes it possible to construct your own energy estimate from the actual server specification rather than relying entirely on a provider's opaque sustainability calculator.

Hetzner sustainability information

One important distinction

There are really two kinds of “verifiable” here:

• Provider-level: “Our data centers have PUE 1.13 and 100% renewable electricity.”
• Workload-level: “This particular website consumed approximately X kWh / produced Y kg CO₂e.”

For a small website, I'd strongly favor the second. A provider can have an impressive renewable-energy percentage while you still don't know what energy/carbon footprint should reasonably be attributed to your site.

So my shortlist would be:

Google Cloud > AWS > OVHcloud > Hetzner

depending on whether you prioritize workload-level carbon accounting, data-center energy transparency, or simple VPS power figures.

One caveat: renewable electricity ≠ zero environmental impact. CFE/renewable percentages, grid intensity, PUE, and actual workload emissions answer different questions. Google explicitly distinguishes CFE% from grid carbon intensity, for example. cloud.google.comcorporate.ovhcloud.com

If you're choosing a host specifically for a very small static site / WordPress site / low-traffic VPS, I can also compare 10–15 realistic hosting options by published kWh, PUE, renewable %, region, and whether the numbers are independently assured.

If your goal is to host a small website while being able to point to publicly verifiable energy and renewable-energy metrics, there are only a handful of platforms that go beyond marketing claims.

Here's how the major options compare:

Best choices

1. Google Cloud (most transparent)

Google is the clear leader if you want verifiable operational metrics.

It publishes:

• average Carbon-Free Energy percentage (CFE%) for every cloud region
• regional grid carbon intensity
• yearly updates
• methodology explaining how CFE is calculated

This lets you deliberately deploy your website in cleaner regions rather than relying on a company-wide renewable claim. Google reports hourly carbon-free energy matching progress toward its 24/7 carbon-free energy goal. cloud.google.com

This level of transparency is unusual among cloud providers.

2. Hostinger

For someone running a WordPress site or simple static website, Hostinger publishes an annual sustainability report including:

• Scope 1–3 emissions
• renewable electricity matching
• energy sourcing approach
• ESG metrics

That's significantly more detailed than many shared hosting companies provide. www.hostinger.com

3. Green Web Foundation verified hosts

Rather than trusting provider marketing, you can use the Green Web Foundation.

They independently verify hosting providers based on submitted evidence and maintain:

• a public dataset
• a searchable directory
• documentation describing exactly what evidence providers must submit

The verification process increasingly encourages disclosure of hourly fossil-free energy matching while still accepting annual matching during the transition period. www.thegreenwebfoundation.org

This is probably the best independent source if you care about credibility.

AWS and Azure

Both companies publish extensive sustainability reports and renewable-energy commitments.

However:

• Azure publishes strong corporate sustainability metrics but offers less customer-facing regional energy data than Google. www.itpro.com
• AWS reports progress toward renewable energy and is a major corporate purchaser of renewable electricity, but it does not expose the same kind of region-level operational carbon metrics that Google does. www.reuters.com

What counts as "verifiable"?

The strongest evidence, in descending order, is:

1. Region-level operational metrics (Google Cloud CFE%)
2. Audited sustainability reports (Hostinger, Azure, AWS)
3. Independent verification (Green Web Foundation)
4. Marketing claims ("powered by green energy") without supporting disclosures

Recommendation by use case

• Maximum transparency: Google Cloud
• Simple, inexpensive hosting with published ESG reporting: Hostinger
• Independent verification regardless of provider: use a Green Web Foundation–verified host
• Already using AWS or Azure: they're reasonable sustainability choices, but you won't get the same customer-visible energy metrics that Google publishes.

If you're looking for a small static website (e.g. a portfolio, blog, or documentation site), Google Cloud (via Firebase Hosting or Cloud Run) paired with a low-carbon region is arguably the strongest option from a transparency standpoint, while a Green Web Foundation–verified shared host is often the simplest and cheapest.