Grid-scale energy storage hits record high in Q2, driven by California’s significant installations despite supply chain delays.

The US Energy Storage Monitor (Wood Mackenzie) reported that the grid-scale segment of the market drove installations to their highest level ever seen, with 1,510MW and 5,109MWh of grid or utility-scale deployments in the three month period from March to June. Residential and industrial (C&I) segments slowed when compared quarter-on-quarter to Q1, with 137.8MW and 155.2MWh respectively respectively. Wood Mackenzie noted that supply chain constraints and queues to interconnect to the grid were among major factors in causing delays. California accounted for just under half of grid scale installations, deploying 738MW in total in the 3 months. The growth was driven yet again by a dominant California market, with 350MW/1,400MWh added to power producer Vistra Energy’s Moss Landing Energy Storage Facility in the state represented the single biggest addition. The Federal Energy Regulatory Commission (FERC) is set to reform the connection process in the US, most notably by the Federal Energy Storage System.