Peak Energy

Peak Energy is the one to know if you're tracking sodium-ion in the US specifically — it operates the country's first large-scale sodium-ion system, running on an NFPP polyanion cathode that eliminates thermal runaway outright and removes 85% of the causes behind battery failures generally. The GS-1.1 product backs that up with 3.1 MWh of storage at 95% DC round-trip efficiency across a -40°C to 55°C range, and in March 2026 a deployment with RWE went live on the MISO grid. The roadmap is aggressive: 5 GWh of production by 2028, 50 GWh by 2032, with a gigafactory already starting operations this year.