The US solar power generation industry includes about 150 companies that provide a small but growing amount of the nation's electricity. Major companies include independent producers NextEra Energy, Sempra Generation, and NRG Energy, as well as utilities such as Florida Power & Light (a subsidiary of NextEra Energy). The industry is highly concentrated: the top 10 utilities involved in solar power generation accounted for 80 percent of the solar utility market in 2009, according to the Solar Electric Power Association (SEPA). Overall, solar energy accounts for less than 1 percent of the energy consumed in the US today.
The US is the world's fourth-largest solar electric market, behind Germany, Spain, and Japan, according to the Solar Energy Industries Association.
See full Article.

