The US battery energy storage market added 5,597 megawatt hours (MWh) in the second quarter of 2023, a new quarterly record.

The grid-scale segment of the industry drove the market with a record-breaking 5,109 MWh in Q2, beating the previous record in Q4 2021 by 5%, according to Wood Mackenzie and the American Clean Power Association’s (ACP) latest US Energy Storage Monitor report.

The grid-scale segment achieved 172% growth quarter-over-quarter. California was No. 1 among states with the most grid-scale energy storage installations, with 738 MW and a 49% share of installed capacity.

Wood Mackenzie projects the grid-scale segment to be the main driver of the market in its five-year forecast from 2023-27, accounting for 83% of total installations, or 55 gigawatts (GW).

ACP’s VP of research and analytics, John Hensley, said:

The energy storage market is on pace for a record year, as utilities and larger power users increasingly turn to storage to enhance the grid and improve reliability.

The market is on pace to nearly double annual installations despite supply chain challenges and interconnection delays, and will continue to grow quickly in coming years.

Community, commercial, and industrial (CCI) installations, at 107 MWh, were higher than any quarter in 2022 but couldn’t keep pace with the huge spike in Q1 installations, resulting in a 53% quarterly decline. However, the segment is still up 25% year-over-year.

Residential storage saw its second-straight quarter of decline at 381.2 MWh, behind Q1’s 388.2 MWh. California saw the biggest decline, decreasing 17% quarter-over-quarter and 37% year-over-year.

Vanessa Witte, senior analyst with Wood Mackenzie’s energy storage team, said, “We still project strong growth for the residential segment in our five-year outlook, reaching a total of 8 GW in 2027. However, the CCI segment continues to fail to meet growth projections and we have downgraded its five-year growth forecast by 28% to 3 GW.”

On Friday, the US Department of Energy (DOE) announced up to $325 million for 15 projects across 17 states and one tribal nation to accelerate the development of long-duration energy storage (LDES) technologies. The DOE has set a goal to reduce the cost of LDES by 90% by 2030.

Read more: Volvo is going to turn used EV batteries into new battery storage

Photo: Jupiter Power; Graphs: US Energy Storage Monitor Q3 2023 | American Clean Power Association, Wood Mackenzie

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