US firm's world-largest sodium phosphate battery offers record savings

Peak Energy, a New York-based company, has launched the world's largest grid-scale sodium-ion phosphate (NFPP) battery system in the United States. This innovative energy storage system (ESS) features a patent-pending passive cooling design that eliminates nearly all moving parts, resulting in significant cost savings and enhanced reliability. The system offers at least $1 million in annual operational cost savings per gigawatt hour installed, reduces auxiliary power use by up to 90%, cuts lifetime costs by approximately 20% compared to lithium iron phosphate (LFP) batteries, and decreases battery degradation by 33% over a 20-year lifespan. The launch marks a major step toward onshoring battery manufacturing in the U.S., leveraging the country's abundant natural resources, including the world's largest reserves of soda ash—a key raw material for sodium-ion batteries. Peak Energy is currently piloting the system with nine utility and independent power producer customers, aiming to commercialize sodium-ion battery storage and secure nearly 1 GWh of