The California Energy Commission (CEC) has approved a 400MW/3,200MWh grid-scale battery storage project through the state planning agency’s Opt-In Certification Program.

In this US news roundup, battery energy storage system (BESS) project updates from Spearmint Energy in Texas, Polaris Renewable Energy in Puerto Rico, and Clearway Energy Group in Utah.

D. E. Shaw Renewable Investments (DESRI) has signed a preferred equity investment in IPP Linea Energy’s 235MW/470MWh Duffy battery energy storage system (BESS) in Matagorda County, Texas.

Clearway Energy Group has negotiated tolling agreements with SDG&E for one of its solar and storage complexes in Kern County, California.

Avantus has raised more than US$500 million for 200MW/500MWh Aratina 1 BESS project in Kern County, California.

IPP Clearway Energy Group has closed financing and started construction on its 1,280MWh Honeycomb battery energy storage system (BESS) portfolio in Utah, US.

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. 

Clearway Energy has withdrawn three hybrid solar and storage projects from Hawaiian Electric Co’s (HECO’s) latest renewable energy procurement, citing the investor-owned utility’s (IOU’s) “ongoing financial uncertainty”.

IPP Clearway Energy Group has closed US$550 million in financing for a solar-plus-storage project with a 118MW BESS in Kern County, California.

Renewables developer Clearway Energy Group has closed a US$700 million construction financing on a portfolio of solar and storage projects in California, US.