Vanadium flow batteries could be a workable alternative to lithium-ion for a growing number of grid-scale energy storage use cases, say Matt Harper and Joe Worthington from Invinity Energy Systems.

Investor-owned utility (IOU) Southern California Edison (SCE) is seeking regulatory approval of resource adequacy (RA) contracts covering 620MW of BESS capacity across three projects.

US renewable energy developer, Longroad Energy announced financial close of 111MWdc solar and 85MWac/340MWh storage project Sun Pond in Maricopa County, Arizona 4 December.

Strata Clean Energy announced the completion of the 70MW/280MWh Inland Empire Energy Storage project, located in Rialto, California, 4 December.

Fengate Asset Management and Alpha Omega Power have closed a tax equity commitment with US Bancorp Impact Finance for a 400MWh BESS project in California, acquired from Origis Energy.

IPP Clearway Energy Group has signed a Energy Storage Exclusivity Agreement (ESEA) with California CCA utility Central Coast Community Energy (3CE) for a 750MW/3,000MWh standalone BESS located in Monterey County, California. 

NextEra Energy Resources (NEER) has become the next IPP to seek approval of a renewable energy development incorporating battery storage via the California Energy Commission’s (CEC’s) opt-in process, as permitted under Assembly Bill (AB) 205. 

London Stock Exchange-listed Gore Street Energy Storage Fund (GSF) has secured a US$80 million increase in debt facilities for its battery storage projects.

A double-header of tax equity news from the California BESS market, with IPPs Ormat Technologies and esVolta both completing deals for grid-scale projects in the state.

Aypa Power has negotiated two resource adequacy agreements with Pacific Gas & Electric covering 500MW/2,000MWh of energy storage from two standalone BESS projects in the Californian cities of Industry and Irwindale.