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Peak Energy, Jupiter Power Ink 4.75 GWh Sodium-Ion Storage Deal

The agreement signals rising confidence in sodium-ion for grid storage, reinforcing U.S. supply-chain ambitions.

Overview

  • Peak Energy will deliver about 720 MWh in 2027, which the company describes as the largest single announced sodium-ion deployment to date.
  • An option reserves a further 4 GWh for 2028–2030, and the total contract value could exceed $500 million.
  • Peak says its system uses fully passive cooling that cuts auxiliary power use by up to 97% and targets lower O&M with roughly 30% better cell degradation over 20 years compared with lithium-ion.
  • Jupiter Power voiced support for domestic battery manufacturing and called Peak’s approach a potential game changer for the industry.
  • The companies frame the deal as advancing a U.S. sodium-ion supply chain at a time when China leads global sodium-ion deployments.