World’s largest 4.75 GWh sodium battery system planned for US energy storage

Photo coutesy of Peak Energy. Article by Aman Tripathi. Interesting Engineering – November 13, 2025.

US-based Peak Energy, a company focused on developing giga-scale energy storage technology for the grid, has announced a significant, multi-year agreement with Jupiter Power, a prominent developer and operator of utility-scale battery energy storage systems. Under the terms of the phased agreement, Peak Energy will supply up to 4.75 GWh of its sodium-ion battery energy storage systems (ESS). These systems are slated for deployment across Jupiter Power’s projects between 2027 and 2030. […]

Click here to view original web page at www.interestingengineering.com