2024 Special Report on Battery Storage

Battery storage capacity grew from about 500 MW in 2020 to 13,000 MW in December 2024 in the CAISO balancing area. Over half of this capacity is physically paired with solar or wind

US BATTERY STORAGE: ERCOT surpasses CAISO in Q2 for most

The Electric Reliability Council of Texas took over as the US region with the most operating battery storage capacity, adding 51.5% of the 6.239 GW installed across the US in second

U.S. Grid Energy Storage Factsheet

The U.S. has 431 operational battery energy storage projects, 8 using lead-acid, lithium-ion, nickel-based, sodium-based, and flow batteries. 10 These projects totaled 27 GW of rated power in 2024, 8

Grid-Scale Battery Storage: Frequently Asked Questions

Storage duration is the amount of time storage can discharge at its power capacity before depleting its energy capacity. For example, a battery with 1 MW of power capacity and 4 MWh of usable energy

Global energy storage

Find the latest statistics and facts on energy storage.

US marks record year for energy storage installations

In 2024, a total of more than 12,000MW and over 37,000MWh were deployed, representing increases of 33% and 34% respectively over the previous year. Texas and California

US BESS installations ''surged'' in 2023 with

Operating capacity of battery storage in US grew by 7.9GW last year, bringing the total cumulative installed base to 17GW by the end of 2023.

Executive summary – Batteries and Secure Energy Transitions –

Strong growth occurred for utility-scale battery projects, behind-the-meter batteries, mini-grids and solar home systems for electricity access, adding a total of 42 GW of battery storage capacity globally.

U.S. battery capacity increased 66% in 2024

In 2025, capacity growth from battery storage could set a record as operators report plans to add 19.6 GW of utility-scale battery storage to the grid, according to our January 2025

U.S. adds record amount of battery energy storage in first three

The group also reported that the United States surpassed 30-GW of battery storage nationwide at the end of March 2025, representing a 65% increase compared to the same period one