Peak Energy is building a 4 GWh gigafactory in California.

The American startup Peak Energy will carry out a major investment in the energy‑storage sector. The company will spend 71 million dollars on the construction of a sodium‑ion battery factory in Sacramento, California. It will be the first manufacturing facility in the United States of this scale dedicated exclusively to large‑scale grid storage systems. The first deliveries of equipment are planned for early 2027.

A cheaper and more reliable alternative to lithium

Sodium‑ion technology is emerging as the most serious competitor to the currently dominant lithium iron phosphate cells. As representatives of Peak Energy emphasize, sodium systems feature lower operating costs, higher durability, and excellent reliability. An important advantage, however, is the raw material itself — sodium is widely available and inexpensive, which frees the supply chain from dependence on hard‑to‑obtain rare minerals.

The new manufacturing facility in Sacramento, covering more than 17,000 square meters, will reach a target production capacity of 4 GWh per year.

“America needs energy storage systems that are cheaper, more reliable, and purpose‑built to meet the growing demand for power on the grid,” said Landon Mossburg, CEO of Peak Energy. “This factory is proof that the U.S. can not only invent modern technologies but also manufacture them at massive scale.”

A massive order portfolio and alliances with industry giants

The young company, which only closed its Series A funding round in 2024, is growing at lightning speed. Peak Energy has already secured contracts and customer commitments for deliveries totaling more than 6 GWh through 2030.

Strategic agreements with major market players support the execution of this plan:

• General Motors — In June 2026, the startup signed a partnership with GM Ventures (the automotive giant’s investment arm), combining GM’s sodium‑ion cell technology with its own storage platform.
• RWE Americas — The companies will jointly deploy a sodium battery in eastern Wisconsin.
• Jupiter Power — A contract for the delivery of approximately 4.75 GWh of storage systems between 2027 and 2030.
• Energy Vault — An agreement for 1.5 GWh of capacity intended for platforms powering the rapidly growing AI data‑center sector.

The company already has a successful pilot deployment. In Watkins, Colorado, a 3.5 MWh sodium‑ion system is operating successfully — one of the largest grid‑connected installations of its kind in the United States.

California attracts innovative industry

The choice of Sacramento as the factory location was the result of a nationwide selection process. The investment received strong support from state authorities — in May, Peak Energy obtained a California tax credit worth 10.5 million dollars. The project will generate hundreds of high‑quality jobs and provide a powerful boost to the local economy.

“The future of energy is being built in California,” commented Dee Dee Myers, senior advisor to Governor Gavin Newsom. Local economic‑development agencies emphasize that the region is becoming a prime destination for advanced industries seeking to benefit from the ongoing energy transition.