U.S. battery capacity increased 66% in 2024
In the United States, cumulative utility–scale battery storage capacity exceeded 26 gigawatts (GW) in 2024, according to our January 2025 Preliminary Monthly Electric Generator Inventory. Generators added 10.4 GW of new battery storage capacity in 2024, the second–largest generating capacity addition after solar. Even though battery storage capacity is growing fast, in 2024 it was only 2% of the 1,230 GW of utility–scale electricity generating capacity in the United States.
Solar, battery storage to lead new U.S. generating capacity additions in 2025
We expect 63 gigawatts (GW) of new utility-scale electric-generating capacity to be added to the U.S. power grid in 2025 in our latest Preliminary Monthly Electric Generator Inventory report. This amount represents an almost 30% increase from 2024 when 48.6 GW of capacity was installed, the largest capacity installation in a single year since 2002. Together, solar and battery storage account for 81% of the expected total capacity additions, with solar making up over 50% of the increase.