Peak Energy Raises $108 Million to Scale Sodium-Ion Storage

Peak Energy, a semiconductor company based in Sacramento, has successfully raised $108 million in a Series B funding round. This investment, led by General Motors Ventures, will enable the company to expand its operations and expand into the data centre market. Peak Energy specializes in developing sodium-ion energy storage systems that are designed to be more affordable and safer for large-scale energy storage applications.

The company's technology features passive cooling systems, which can reduce operational and maintenance costs by up to 20% compared to traditional energy storage installations. Sodium-ion technology offers an alternative to lithium-ion batteries, as sodium is an abundant material that could support domestic supply chains. Peak Energy's new manufacturing facility in Sacramento will be capable of producing four gigawatt-hours of annual capacity, with production scheduled to begin in early 2027.

This expansion comes as demand for electricity infrastructure continues to grow, particularly for data centres that power AI applications. The investment in Peak Energy underscores the increasing importance of energy storage solutions in supporting grid reliability and easing grid constraints.