Using the Green Web Feed

We’ve been collecting data about how the web is powered since 2006 at the Green Web Foundation, and now have the largest dataset in the world of which sites use renewable power.

You can access a number of ways.

Using this site, with the Green Web Check

You can check how any website on the internet is powered with the Green Web Check feature. Enter the url for the website, and you’ll get back the status of the site, along with the evidence we based the decision on.

Try the Green Web Check

Using the API

If you want to automate checks like this, we also make this available using the Green Web API. You can test it in a browser, and building integrations is simple. If you need to host it yourself, the code for the API and the platform is open sourced under the Apache 2 license:

Try the Green Web API, and see documentation on how to use it at

Using the browser extensions

If you use Firefox or Chrome, you can download the Green Web Browser extensions, which can show you the green status of every site you visit, and every link on a page.

Install the Chrome Extension | Install the Firefox Browser Add-on

Downloading Green Web Data Direct

We want others to be able to use the Green Web data, to build new tools or services, carry out analysis, or do things we hadn’t thought of.

To support this, we make the bulk datasets available for free as open data under the Open Database Licence.

Find more about the Green Web datasets available

Getting Support

Got an idea for an app, or service? If you need help with integrating The Green Web Feed-API into your tool or website, get in touch via email if you have any questions or comments, or drop us a line on twitter, at @greenwebfound. If you prefer chat, come say hi in our zulip chat room.

3rd party tools using the Green Web data


US-based provides quality, objective information on the environmentally friendly web hosting industry. EcoHostReviews has integrated The Green Web Feed into its rankings.


The website efficiency checker is operating a free tool that can be used to determine the energy-efficiency of a certain website. Ecograder integrated The Green Web Feed in order to recognize green hosting.

Hosting comparison site

The Dutch hosting comparison site uses The Green Web Feed to show the green and grey smileys next to the hosting packages on sale. This way, shoppers can see directly whether the website space they intend to buy from a certain supplier will result in green hosting for their site or not.