Solar energy is the second most used renewable resource in the world behind wind. global capacity for solar energy production is 39.8 giga watts. Germany uses the most solar energy in the world with 9785 mw. the united states has the fourth most solar energy in the world with 1650 mw. In the U.S. solar energy is mostly used in the south western united states in states such as Arizona and New Mexico.
http://www.worldwatch.org