Battery storage deployments on the California ISO (CAISO) grid slowed in the lead-up to the peak summer season, with no new battery energy storage connected in May and only 65MW added in June.

Generate Capital has acquired US large-scale battery storage developer esVolta.

Hydrostor waits to hear if one of its proposed large-scale projects in California will get approved to supply electricity.

Moss Landing Energy Storage Facility, the single largest battery energy storage system (BESS) project in the world so far, is back online.

Energy technology company Wärtsilä is supplying 500MW/2,000MWh of battery energy storage systems (BESS) to PV projects operated by Clearway Energy Group in Hawaii and California, US.

News in brief from around the world in Energy Storage.

ArcLight views its portfolio of existing thermal power plant assets as “excellent potential locations for battery projects”.

Investor-owned utility SDG&E and the City of San Diego are launching a dozen microgrid projects with energy storage across San Diego, California, following similar announcements elsewhere in the state.

Matrix Renewables, the platform backed by private equity firm TPG, has secured tax equity financing of US$92 million for two solar-plus-storage projects in California with 80MWh of energy storage.

Carbon-free energy deals signed by Google and a California community energy group could be a widely replicable model.