Voluntary Green Power Purchasing up 1000 Percent in 5 YearsGreen power currently accounts for about 2 percent of America’s electricity supply, but
voluntary purchasing of renewable energy is accelerating development of new renewable energy sources. The report, from DOE’s National Renewable Energy Laboratory (NREL), "Green Power Marketing in the United States: A Status Report," shows that renewable generating capacity in the United States installed to meet voluntary green power purchasing soared from 167 MW in 2000 to more than 2,200 MW by the end of 2004.