Battery boom: 5.6 GW of US energy storage added in Q2
September 29, 2025
The US battery storage market just had its biggest quarter ever. In Q2 2025, a record 5.6 gigawatts (GW) of new capacity came online, according to the latest US Energy Storage Monitor report from the American Clean Power Association (ACP) and Wood Mackenzie.
Image: Wood Mackenzie
Utility-scale storage leads the charge
Most of that Q2 growth came from utility-scale projects, which added 4.9 GW…