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U.S. Storage Market Continued To Grow In The Second Quarter Of 2021

September 16, 2021

by Paul Ciampoli
APPA News Director
September 16, 2021

According to Wood Mackenzie and the U.S. 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 the second quarter of 2021 the second-largest quarter on record by MW for U.S. energy storage additions.  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 $5 billion of investment will come online in 2021 alone.

Details on the report were released on Sept. 9.

Despite positive market momentum in the U.S., 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, the report noted.

 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 megawatt hours (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, Calif., contributing most of the MW for the quarter. Solar-plus-storage projects in Texas and Arizona also bolstered Q2 front-of-the meter capacity.

Meanwhile, policy support continued to build in Q2, 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, Wood Mackenzie and ESA said.

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