Overview

• The 3.5 MWh sodium-ion phosphate pyrophosphate system is the world’s largest of its kind and the first U.S. grid-scale BESS to use fully passive cooling with no moving parts.
• Initial pilot deployment across nine utilities and IPPs demonstrated up to 90% reduction in auxiliary power use, about $1 million in annual savings per GWh and 33% lower degradation over a 20-year lifespan.
• Peak Energy is negotiating nearly 1 GWh of commercial contracts and plans to ship hundreds of megawatt-hours of its system over the next two years.
• The technology leverages the U.S. holds the world’s largest soda ash reserves to secure a fully onshored sodium-ion battery supply chain under recent bipartisan legislation.
• A U.S. cell factory is scheduled to begin production in 2026 to support large-scale commercial roll-out and meet growing utility and hyperscaler demand.