🌿 EcoHost Finder
Find green web hosting and see how big your website’s carbon footprint really isAffiliate disclosure: we may earn a commission when you buy through these links, at no extra cost to you. Green claims summarize what each host publicly states, as reviewed on the date shown; we don’t audit them. Follow each “check claim” link to confirm. Prices are promotional samples and change often. Carbon figures are model estimates.
Green Web Hosting, Honestly Explained, Plus a Calculator for Your Site’s Real Footprint
“100% green!” can mean very different things. EcoHost Finder sorts hosts by how they’re green (renewable supply, certificates or offsets) and shows you how much hosting actually contributes to your website’s carbon footprint.
🌿 Open EcoHost Finder →The greenest hosts run on directly supplied renewable energy or cloud platforms that match 100% of their electricity with renewables. Hosts that buy renewable energy certificates (RECs) come next, and offset-only hosts are the weakest claim. Green hosting typically cuts the data-centre share of a website’s emissions, about 15% of the total in the Sustainable Web Design model. Reducing page weight cuts everything else, so do both. EcoHost Finder helps with each.
What makes web hosting “green”?
Every website runs on servers in data centres that use electricity around the clock. A host is “green” when it does something about the carbon that electricity creates. The how matters a great deal, so EcoHost Finder labels every host by the type of claim it makes:
Direct renewable supply
Electricity bought from a renewable supplier or a power purchase agreement for the data centre.
StrongestCloud renewable match
Built on a cloud platform that buys renewables equal to its yearly global electricity use.
StrongRenewable certificates (RECs)
Certificates purchased to match part, all, or even several times the host’s energy use. Certified RECs are more credible.
GoodCarbon offsets only
Paying for projects to balance emissions while the servers run on ordinary grid power. Quality varies widely.
WeakestHow EcoHost Finder works
Find green hosts
Filter by minimum claim strength (for example “direct renewable only”), server region, hosting type, price and independent certifications. Each host shows its claim type, certifications, any stated data-centre efficiency (PUE), and a link to check the claim on the host’s own site.
Get a transparent green score
Scores combine claim strength, matching above 100%, independent certifications, stated efficiency, tree-planting or climate giving, and whether the host publishes a dedicated sustainability page.
Estimate your website’s carbon
Enter your average page size, monthly page views and share of returning visitors. You’ll see CO₂ per page view and per year, real-world equivalents, and how much green hosting and a lighter page would each save.
Learn and verify
The “How green claims work” tab explains each claim type and links to the Green Web Foundation’s free Green Web Check.
Green hosts at a glance
| Host | Claim type | What they state publicly |
|---|---|---|
| Krystal (UK) | Direct renewable | Power matched 100% with renewables; Certified B Corp since 2023; PUE of 1.2 or better; trees planted for every active client |
| GreenGeeks | RECs · 300% | Renewable energy certificates equal to 300% of its energy use; a tree planted per purchase |
| Kinsta | Cloud match | Built on Google Cloud and Cloudflare; states sites run on 100% renewable energy |
| SiteGround | Cloud match | Infrastructure on Google Cloud, which matches its annual electricity use with renewables |
| DreamHost | RECs / offsets | Long-standing carbon-neutral claim |
| IONOS | Renewable supply | Reports renewable-powered data centres in Europe and the US |
Summaries of public statements as reviewed in November 2026. Claims change, so confirm on each host’s sustainability page or with the Green Web Foundation before deciding.
The honest truth: how much does green hosting cut?
In the widely used Sustainable Web Design model, a website’s energy is split between four parts: the data centre, the networks that carry the data, the devices people view it on, and the energy embodied in producing all that hardware. Hosting is only one slice:
Data centres 15% · networks 14% · user devices 52% · hardware production 19% (Sustainable Web Design model v3).
Here’s what EcoHost Finder estimates for a typical site with 2.3 MB pages, 20,000 page views a month and 25% returning visitors:
| Scenario | CO₂ per page view | CO₂ per year | |
|---|---|---|---|
| Standard grid-powered host | 0.61 g | 145.7 kg | |
| Switch to a green host | 0.53 g | 126.3 kg | |
| Green host + half the page weight | 0.26 g | 63.2 kg |
Switching hosts saves about 13% here. Pairing it with a lighter page cuts the footprint by more than half. Green hosting is a meaningful, easy first step, and page weight is the other half of the job.
7 ways to make your website greener
Choose a host with a strong claim type
Prefer direct renewable supply or cloud renewable matching over offset-only claims.
Pick a data centre near your visitors
Shorter distances usually mean faster pages and less network energy.
Compress and resize images
Images are usually the heaviest part of a page. Use WebP or AVIF, at the size they’re displayed.
Use caching and a CDN
Returning visitors download far less data when assets are cached.
Cut unused scripts and plugins
Every tracker, slider and chat widget adds weight to every page view.
Avoid autoplay video
Let visitors choose to play video instead of streaming it on every load.
Show your green badge
Many green hosts provide badges. Being open about it builds trust with eco-minded visitors.
Find a green host and measure your site’s footprint
Filter hosts by how they’re green, then estimate your website’s yearly CO₂ in seconds. Free and private.
Launch EcoHost Finder →Frequently asked questions
What is green web hosting?
Green web hosting is hosting that takes action on the carbon created by running servers, by using renewable electricity, buying renewable energy certificates, offsetting emissions, or running more efficient data centres.
Is green hosting more expensive?
Usually not by much. Many green hosts price their shared plans in the same range as mainstream hosts, so you can often go green without paying more.
What’s the difference between RECs and carbon offsets?
Renewable energy certificates represent renewable electricity added to the grid to match energy use. Carbon offsets fund projects such as tree planting to balance emissions elsewhere. RECs relate directly to electricity; offsets don’t change the power your servers use.
How do I check if my current host is green?
Use the Green Web Foundation’s free Green Web Check, which looks up whether a domain is served from a verified green host. You can also look for a sustainability page on your host’s website.
How much CO₂ does a website produce?
It depends on page size, traffic and energy source. EcoHost Finder estimates around 0.6 g of CO₂ per page view for a 2.3 MB page on a grid-powered host, which is about 146 kg a year at 20,000 page views a month.
Does green hosting slow down my website?
No. Many green hosts, including those built on major cloud platforms, perform as well as or better than conventional hosts. Speed depends on the plan and setup, not the energy source.
Disclosure: this page may contain affiliate links; we may earn a commission at no extra cost to you. Green claims summarize hosts’ public statements and are not independently audited by us. Carbon figures are model-based estimates using the Sustainable Web Design methodology.
