As briefly mentioned yesterday the EPA has challenged Fortune 500 corporations to collectively exceed 5 billion kilowatt-hours green power purchasing by year end 2007. The companies on their Green Power list have stepped up to the plate and helped EPA exceed its goal by 130%.

These purchases avoid the equivalent carbon dioxide emissions of more than 670,000 average American homes annually. As of January 2008, EPA kicked off its second Fortune 500 Challenge, which will conclude at the end of 2009.

It’s a list worth checking out, to see who you may want to deal with in the future. The top 5 - Intel, Pepsi, Wells Fargo, Whole Foods and Pepsi Bottling.