Currently under construction, the Viejas microgrid will combine 15 MW of solar with 38 MWh of long-duration, non-lithium storage and is the first loan the LPO has made under its long-dormant Tribal Energy Financing Program.

Western Interstate Energy Board member states backed the research project exploring the region's potential for supplying the minerals needed for U.S. energy transition.

A 60 MWh long-duration storage project using vanadium flow and zinc hybrid cathode batteries received a $31 million grant from the California Energy Commission.

With grid challenges looming and lithium in short supply, California is looking to accelerate the deployment of non-lithium-ion long-duration storage.