Peak Energy has raised $108 million in an oversubscribed Series B financing round to scale domestic manufacturing of its sodium-ion energy storage systems, fulfill more than $1 billion in existing customer orders, and expand into power infrastructure for data centers. The round was led by General Motors Ventures, with participation from Maverick Silicon, Infinite Capital, Eclipse, Xora Innovation, and LG Technology Ventures.
Founded in 2023, Peak Energy develops passively cooled sodium-ion energy storage systems designed for grid-scale applications. The company is positioning sodium-ion technology as an alternative to lithium-ion storage, particularly for utilities, power producers, and data centers seeking lower-cost and domestically sourced energy infrastructure.
Peak has secured more than $1 billion in commercial agreements, including deals with Jupiter Power, RWE, and Energy Vault. The company said demand is also increasing from data center operators as access to electricity becomes a growing constraint on AI infrastructure expansion.
The financing follows several milestones for Peak during 2026. In June, the company announced a partnership with General Motors to jointly develop next-generation sodium-ion battery cells for energy storage. The collaboration is also intended to leverage GM’s U.S.-based battery cell industrialization expertise.
In July, Peak unveiled a 4 GWh manufacturing facility in Sacramento, California, which is expected to begin production in the first quarter of 2027. The Series B capital will support the company’s efforts to scale that domestic manufacturing footprint and meet its existing order backlog.
Peak’s flagship system uses passive cooling rather than conventional active cooling infrastructure. The company said the simplified architecture can reduce energy costs by up to 20% compared with conventional storage systems by lowering energy consumption, eliminating planned maintenance, and reducing lifetime operating costs.
The system is also designed to consume no water, produce virtually no noise, and eliminate what Peak describes as leading causes of battery fires. Those characteristics are particularly relevant as data centers seek large-scale storage capacity while communities and utilities scrutinize energy costs, safety, water usage, and local infrastructure impacts.
Peak’s leadership team includes veterans of Tesla, Enovix, and Fluence. The company plans to use the latest financing to increase manufacturing capacity and expand deployment of its storage platform across grid and data center markets.
KEY QUOTES:
“Peak’s mission from day one has been to lower the cost of energy through safer, simpler, cleaner, and more reliable technology. The investment we announce today will supercharge Peak’s ability to scale and deliver as the world increasingly turns to passively cooled sodium-ion storage to solve our energy needs.”
Landon Mossburg, Co-Founder And Chief Executive Officer Of Peak Energy
“GM Ventures is investing to help Peak Energy continue to scale this innovative technology because we believe it has significant potential in the energy storage market as a safe, cost-effective solution using abundant, domestically sourced materials.”
Kevin McCabe, President Of GM Ventures
“We spent a lot of time looking at the growing power requirements around AI infrastructure, and it became clear that energy storage is going to be an increasingly important part of the solution. Peak is taking a differentiated approach to sodium-ion, with a focus on the full system from chemistry and design through manufacturing and deployment at scale. The combination of strong technical progress, growing customer engagement and a large end market gives Peak an opportunity to build a defining platform in energy storage. We’re excited to support the team as they scale.”
Kenneth Safar, Managing Director At Maverick Silicon
