US Storage Market Continues To Grow In Q2 2021: Report


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According to Wood Mackenzie, a Verisk business (Nasdaq: VSK), and the US Energy Storage Association’s (ESA) latest US Energy Storage Monitor report, 345 megawatts (MW) of new energy storage systems were brought online in the second quarter of 2021.

This is an increase of 162% over the same quarter in 2020, making Q2 2021 the second-largest quarter on record by MW for US energy storage additions.

Market momentum continues to build, as an unprecedented volume of storage will come online in in the second half of the year, with Wood Mackenzie expecting that storage projects representing over US$5 billion of investment will come online in 2021 alone.

Despite positive market momentum in the US, the residential battery storage market dipped slightly, the first drop for the segment in nine quarters (since Q4 2018). Equipment constraints, including an ongoing Tesla Powerwall shortage, is hampering the segment’s growth despite the proliferation of new residential storage players.

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The non-residential segment, which consists of onsite storage and community-scale storage, saw quarter-on-quarter deployments rise by 31%, driven by the growth of the community storage market in Massachusetts.

The front-of-the-meter (FTM) market deployed 218 MW/729 MWh in Q2 2021, with California, Texas and Arizona leading the segment. California continued to lead the front-of-the-meter segment in Q2, with Arevon/Capital Dynamics’s 100MW/400MWh Saticoy Energy Storage peaker plant replacement in Ventura County contributing most of the MW for the quarter. Solar-plus-storage projects in Texas and Arizona also bolstered Q2 front-of-the meter capacity.

“The United States remains on course for a record setting year, further demonstrating battery storage’s growing acceptance within the power market and underlining its importance to the energy transition,” said Vanessa Witte, senior energy storage analyst with Wood Mackenzie.

“Energy storage deployment achieves decarbonization and resilience goals simultaneously,” said Jason Burwen, U.S. Energy Storage Association Interim CEO.

“Storage is increasingly necessary to enable the accelerated commissioning of wind and solar power—with the U.S. Department of Energy’s just-released Solar Futures Study projecting as much as 400 GW needed by 2035.

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“Storage also assures that power delivery remains resilient to increasingly frequent and intensive weather disruptions, like the heat waves and hurricanes seen in the U.S. this past summer.

“While the market for energy storage in the U.S. has seen tremendous growth this year, public policy has yet to support the pace of deployment needed to meet decarbonization and resilience goals.

“An investment tax credit, which catapulted industries like solar and wind, can do the same for the energy storage industry—with the added benefit of steering more supply chain investment decisions onshore.”

Policy support continued to build in the second quarter, with several new state incentives introduced for residential and non-residential storage.

The industry also still awaits the outcome of budget reconciliation, expected this winter, which could include a solar investment tac credit (ITC) extension and/or standalone storage ITC. A positive outcome would upgrade the energy forecast across all segments.

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