U.S. Battery Storage Hits Record 18.9 GW in 2025, Up 52% in a Single Year

One of the biggest obstacles to a clean grid has always been timing: the sun sets and the wind drops, but demand for electricity does not. Batteries solve that problem by storing surplus renewable power and releasing it when needed — and in 2025 the United States deployed them at record scale. According to a report from the American Clean Power Association (ACP) and Wood Mackenzie released March 24, 2026, the country installed 18.9 gigawatts of battery energy storage in 2025, a 52% increase over the prior year.

The growth was broad-based. The fourth quarter of 2025 alone set a record with 5.8 gigawatts installed, including 4.9 gigawatts of utility-scale storage. Residential storage surged too, rising 92% over 2024 as more households paired home batteries with rooftop solar to ride out outages and shift energy use. Texas, California, Arizona and other states led deployment, often driven by high electricity prices and policies rewarding batteries for discharging during peak demand.

“Batteries solve that problem by storing surplus renewable power and releasing it when needed — and in 2025 the United States deployed them at record scale.”

The forces behind the boom are increasingly self-reinforcing. "Declining system costs, supportive policies and growing revenue opportunities have all contributed to impressive growth over the last six years," said Wood Mackenzie analyst Allison Feeney. ACP's John Hensley framed it as a structural shift: "Record-breaking energy storage growth in 2025 highlights how technology innovation is transforming America's grid." The report projects the U.S. will install 500 gigawatt-hours of storage between 2026 and 2031 — a 250% increase over the prior six-year period.

Why this matters for the environment is straightforward. Storage lets utilities lean on solar and wind for more hours of the day, displacing fossil-fuel "peaker" plants that fire up during demand spikes and reducing the need to build new gas capacity. The caveat is that storage is an enabler, not a generator: its climate value depends on charging from clean sources and on continued policy support, which can shift. Even so, the 2025 record signals that grid-scale storage has moved from promising technology to mainstream infrastructure — a quiet but pivotal piece of the energy transition.