Of the 14.5 gigawatts (GW) of battery storage power capacity planned to come online in the United States from 2021 to 2024, 9.4 GW (63%) will be co-located with a solar photovoltaic (PV) power plant, based on data reported to us and published in our Annual Electric Generator Report. Another 1.3 GW of battery storage will be co-located at sites with wind turbines or fossil fuel-fired generators, such as natural gas-fired plants. The remaining 4.0 GW of planned battery storage will be located at standalone sites.