Q2 was biggest quarter ever for energy storage installs in the US

The U.S. installed more battery energy storage in the second quarter of 2026 than in any quarter before it — 20.2 gigawatt-hours (GWh), according to an industry report from the Solar Energy Industries Association and Benchmark Mineral Intelligence. That brings the total for the first half of the year to 30.8 GWh. Most of this growth is happening at the utility scale, meaning large batteries that store power for the grid, not individual homes. Utility-scale projects made up 17.9 GWh of the Q2 total, with 1.8 GWh going to businesses and industry, and just 657 megawatt-hours to home battery systems.

Arizona led all states with 6.2 GWh installed in the quarter, the strongest quarter any state has had. Texas and California also saw big installs, at 3.8 and 3.6 GWh respectively. Batteries are increasingly being used to help the grid handle extreme heat and periods of high demand, which can support reliability and help hold down electricity prices during those peak times.

On the manufacturing side, new U.S. battery plants opened in Ohio, Tennessee, and Texas, adding to domestic production of the batteries used in these systems.

None of this changes rebates or costs for home battery installations directly, but it reflects a broader trend: batteries are playing a bigger role in keeping the grid stable, especially during heat waves. Homeowners considering their own battery storage, often paired with solar, may want to watch whether this larger grid trend eventually shows up in local utility programs or incentives.