If you are visiting this site, I am sure you have heard of green web hosting.
Basically just regular web hosting but using renewable energy sources to provide the energy, be it the sun, the wind, biomass, or anything else. The majority seem to be wind, solar, or a combination of the two.
The idea is that having a website hosted consumes a good amount of electricity, and using renewable sources will help to cut down on normal electricity consumption, which is often from coal fired power plants.
....

Do It Yourself Solar