According to 2017 data from the U.S. Energy Information Administration (EIA) for newly constructed utility-scale electric generators in the United States, annual capacity-weighted average construction costs for solar photovoltaic systems continued to decrease. At the same time, costs for onshore wind turbines and natural gas generators increased slightly. These three generation technologies accounted for more than 97% of total capacity added to the grid in the United States in 2017. Since 2013, average costs for solar photovoltaic generators have fallen by 37%, wind by 13%, and natural gas by 4.7%. Total investment in U.S. electric generating capacity in 2017 decreased by 27% from the previous year.