California utility PG&E is developing a long-duration energy storage microgrid combining batteries and green hydrogen, in partnership with Energy Vault, the company known for its gravity-based solution.

A Madrid-headquartered developer has proposed a solar-plus-storage system in Spain with a 100MW/200MWh battery energy storage system (BESS).

A roundup of energy storage news stories from Europe.

Virtual power plant (VPP) specialist Swell Energy will aggregate home solar and battery systems in a new programme from the Sacramento Municipal Utility District (SMUD).

Form Energy has chosen a site in West Virginia, US, to manufacture its multi-day iron-air battery with a total investment of up to US$760 million.

CO2 Battery company Energy Dome has won €17.5 million (US$18.5 million) in grant and equity financing from the European Innovation Council, the maximum amount available.

The California Independent System Operator (CAISO) has enacted market rule changes to make it easier for energy storage to provide grid ancillary services and help grid reliability.

Battery storage projects from Hynfra Energy Storage and OX2 totalling 130MWh have won contracts in energy auctions in Poland this week.

Utility Eneco and Corre Energy have signed an agreement for the latter to deploy a 320MW, 84-hour duration compressed air energy storage system (CAES) in Groningen, the Netherlands.

The power solutions arm of Mitsubishi Heavy Industries will deploy three co-located battery storage projects for Origis Energy in the Southeast United States.