Sodium-ion battery energy storage system (BESS) startup Peak Energy has launched and shipped its first sodium-ion BESS to be deployed in a shared pilot with nine utilities and independent power producers (IPPs).

The company says the system is the “first ever fully passive MWh scale battery storage system, the largest sodium-ion phosphate pyrophosphate (NFPP) battery system in the world and the first grid-scale sodium-ion storage solution ever deployed to the US.”

Peak Energy’s BESS is designed without moving parts and features active cooling and ventilation components, which, according to the company, helps eliminate the most common failure points in typical BESS setups.

BESS that use lithium-ion (Li-ion) battery cells need active cooling and ventilation systems to extend cell lifespan and prevent fires. The liquid cooling system in Trina Storage’s Elementa 2 Li-ion BESS solution recently earned a 20-year full lifecycle Environmental Product Declaration (EPD) certification from UL Solutions.

Peak also states that its performance testing of the company’s sodium-ion BESS showed record-level cost savings and reliability.

These findings include “at least US$1 million in annual operational cost savings per GWh installed, representing up to 90% reduction in auxiliary power use, approximately 20% in lifetime cost savings vs. lithium iron phosphate (LFP) in an average deployment and a 33% reduction in battery degradation over a 20-year project lifespan.”

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