NREL released its assessment of leading utility green power programs. Under these voluntary programs, residential/commercial consumers can support additional electricity production from renewable resources, such as wind and solar. Ranked by renewable energy sales, Portland General Electric overtook Austin Energy in 2012, selling largest amount of renewable energy in nation. Green power sales of top 10 utility programs by sales exceeded 4.2 million MWh in 2012, up from 3.9 million MWh in ...This story is related to the following:Green & CleanSearch for suppliers of: