Peak Energy to build 4 GWh grid-scale sodium-ion BESS factory in California

A company called Peak Energy is building a factory in Sacramento, California, to make sodium-ion batteries for large-scale energy storage. These are the big battery systems, known as BESS (battery energy storage systems), that utilities and large facilities use to store electricity, not something installed in individual homes. The 183,000-square-foot plant will cost about $71 million and can produce up to 4 GWh of batteries a year. Production is expected to start in early 2027, and the company has already lined up more than 6 GWh in customer orders through 2030.

Sodium-ion batteries are an alternative to the lithium-ion type used in most home and grid storage today. Peak Energy says its version costs less to run and holds up better over time. The company has already gotten one large sodium-ion system running in Colorado and has deals in the works with several energy and technology companies, including a partnership with General Motors' venture arm, to expand use of the technology for things like data centers and industrial power needs.

This news is about industrial-scale manufacturing and grid supply, not a product homeowners can buy or install. But it points to sodium-ion technology becoming more common in the broader energy storage market, which could eventually shape the batteries and storage options available for home use as the technology matures and costs come down.