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Peak Energy, Jupiter Power Ink 4.75 GWh Sodium-Ion Deal, With 720 MWh Firm for 2027

The pact signals market validation and a push to build a U.S. sodium-ion supply chain as grid storage demand accelerates.

Featuring a fully passive design, the technology does not require active cooling systems.
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Overview

  • The agreement includes a confirmed 720 MWh order for 2027 and a capacity reservation for an additional 4 GWh through 2030, for a total of up to 4.75 GWh.
  • The total contract value could exceed $500 million, according to company announcements and industry reporting.
  • Peak Energy says the 2027 tranche would be the largest single announced sodium-ion deployment to date.
  • Company-reported metrics for its NFPP systems include fully passive thermal design with up to 97% lower auxiliary power use and roughly 30% better 20-year degradation versus lithium-ion, aimed at lowering O&M costs.
  • Peak has a U.S. cell factory slated to begin production in 2026 and previously piloted its Na-ion BESS at SolarTAC, while Jupiter Power frames the deal as supporting domestic manufacturing as China currently leads global sodium-ion rollouts.