Florida ranks forty-fifth in total energy consumption per capita, despite the heavy reliance on air conditioners and pool pumps. This includes coal, natural gas, petroleum, and retail electricity sales. It is estimated that approximately 4 percent of energy in the state is generated through renewable resources. Florida's energy production is 6.0% of the nation's total energy output, while total production of pollutants is lower, with figures of 5.6 percent for nitrogen oxide, 5.1 percent for carbon dioxide, and 3.5 percent for sulfur dioxide.