Nuclear electric power accounted for 11% of primary energy production and renewable energy accounted for 11% of primary energy production” during the first nine months of 2010. renewable energy sources (i.e., biomass/biofuels, geothermal, solar, water, and wind) accounted for 10.9% of domestic energy production and increased by 5.7% compared to the same period in 2009. Meanwhile, nuclear power accounted for 11.4% of domestic energy production but provided 0.5% less energy than a year earlier.