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Sacramento lands Peak Energy's sodium-ion factory, with 239 jobs and $71 million on the line

7/9/2026

America's first commercial factory dedicated to sodium-ion grid storage batteries is going up in Sacramento.

Sodium-ion is a battery chemistry that uses sodium to carry an electrical charge instead of lithium, a design difference that matters because sodium is more widely available than lithium and, by Peak Energy's account, cheaper to work with at scale.

Peak Energy, based in Burlingame, California, announced the city selection on July 8, 2026, attaching up to $71 million in investment and 239 local jobs to the project.

What this factory will make Grid-scale storage is a battery system large enough to serve an entire electrical grid rather than a single building. When generation outpaces demand, these batteries absorb the surplus.