RWE, Peak Energy to deploy first sodium-ion battery in US grid
AI Analysis
Summary
Peak Energy says it will deploy the first sodium-ion battery in the Midcontinent Independent System Operator (MISO) service area with RWE Americas in eastern Wisconsin, using passively cooled grid-scale storage that cuts auxiliary power use by 90% and lowers lifetime storage costs by $70/kWh.
<p class="p1"><span class="s1">Peak Energy says it will deploy the first sodium-ion battery in the Midcontinent Independent System Operator (MISO) service area with RWE Americas in eastern Wisconsin, using passively cooled grid-scale storage that cuts auxiliary power use by 90% and lowers lifetime storage costs by $70/kWh.</span></p><p><strong>From <a href="https://www.ess-news.com/2026/03/12/peak-energy-rwe-to-deploy-first-sodium-ion-battery-in-miso/" rel="noopener" target="_blank">ESS News</a></strong></p>
<p>The Midcontinent Independent System Operator (MISO) will receive its first sodium-ion battery thanks to a dual pilot project from battery company <a href="https://pv-magazine-usa.com/2025/09/12/its-easy-to-announce-a-battery-gigafactory-its-much-harder-to-build-one/" rel="noreferrer noopener" target="_blank">Peak Energy</a> and global energy company RWE Americas. The project comes a mere eight months after Peak Energy deployed the <a href="https://www.ess-news.com/2025/07/30/peak-energy-launches-first-u-s-grid-scale-sodium-ion-storage-system/" rel="noreferrer noopener" target="_blank">largest grid-scale sodium-ion storage system</a> in the <a href="https://www.ess-news.com/2025/09/26/peak-energy-announces-operation-of-first-large-scale-sodium-ion-battery-in-us/" rel="noreferrer noopener" target="_blank">United States</a>.</p>
<p>Set to be deployed in Eastern Wisconsin, Peak Energy’s passively cooled, grid-scale energy storage system could be the first ripple indicating MISO’s pivot toward next-gen, non-lithium storage as the grid operator faces capacity constraints, rising costs and solar project cancellations that some <a href="https://www.ess-news.com/2025/07/22/where-storage-is-set-to-thrive-and-fade-under-the-obbb/" rel="noreferrer noopener" target="_blank">industry experts</a> suspect could <a href="https://www.ess-news.com/2025/08/05/storage-growth-spreads-as-california-and-texas-lose-market-share/" rel="noreferrer noopener" target="_blank">slow battery deployment</a>.</p>
<p><em>To continue, please visit our <strong><a href="https://www.ess-news.com/2026/03/12/peak-energy-rwe-to-deploy-first-sodium-ion-battery-in-miso/" rel="noopener" target="_blank">ESS News</a></strong> website </em></p>