... may not add due to rounding. 12 Technical Report NREL/TP-6A2-44094 October 2008 Green Power Marketing in the United States: A Status Report (11th Edition) Lori Bird, Claire Kreycik, ... 22Green Power Marketing in the United States: A Status Report (11th Edition) Lori Bird, Claire Kreycik, and Barry Friedman Prepared under Task No. SAO7.8730 Technical Report NREL/TP-6A2-44094 ... In 2007, utilities reported that an average and a median of 8% of customers dropped out of green pricing programs. While these figures are higher than drop-out rates reported in 2006, retention...