Peak Energy announces operation of first large-scale sodium ion battery in US
Summary
Denver-based Peak Energy claims its sodium-ion battery system offers the lowest operating cost of any energy storage technology on the market today.
<p class="p1"><span class="s1">Denver-based Peak Energy claims its sodium-ion battery system offers the lowest operating cost of any energy storage technology on the market today.</span></p><p><strong>From <a href="https://www.ess-news.com/2025/09/26/peak-energy-announces-operation-of-first-large-scale-sodium-ion-battery-in-us/" rel="noopener" target="_blank">ESS News</a></strong></p>
<p>Peak Energy announced on Friday the successful deployment and operation of the first grid-scale sodium-ion battery system in the US.</p>
<p><a href="https://www.ess-news.com/2025/07/30/peak-energy-launches-first-u-s-grid-scale-sodium-ion-storage-system/">First unveiled in July,</a> Peak Energy’s 3.5 MWh sodium-ion storage system is now operating at solar and renewable energy test facility SolarTAC in Watkins, Colorado. The grid-ready installation is being run in collaboration with nine utilities and independent power producers (IPPs), making it the largest sodium-ion energy storage deployment of its kind in the country.</p>
<p>Peak Energy will collect and distribute operational and modeling data from the real-world operation of its system to the project’s participants. The company expects to launch commercial-scale projects starting in 2027.</p>
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