The Renewable Planet uses Google earth to map green projects around the world.

The Renewable Planet is a free and accessible resource that highlights the number and variety of renewable energy projects from around the world.

The site allows you to search browsing the map of the world, or use the search options where you can select a country and the type of project you are looking for. This site is of major importance to us and our planet, and I believe it is great to see how modern techniques are used to create awareness about renewable energy projects. Now that it's mapped you realize there are much more renewable energy projects out there than we thought.
Source : Treehugger