Press Releases

ESS Tech, Inc., (“ESS” or the “Company”) a leading innovator in long-duration energy storage solutions, today announced the acquisition of the intellectual property and assets of VoltStorage GmbH, a pioneer in iron-salt battery technology. This strategic move combines two complementary technologies to deliver the most flexible, cost-effective long-duration energy storage solution available on the market. The combined platform will set a new industry standard for performance, sustainability, and affordability.

Project to Deploy up to 27 MWh American-Made Large Capacity Energy Storage (LCES) System at U.S. Clear Space Force Station in Alaska

ESS Tec, Inc, NYSE:GWH, a leading manufacturer of long-duration energy storage systems (LDES) for commercial and utility-scale applications, today announced the execution of a $9.9 million contract with Concurrent Technologies Corporation (“CTC”) and the United States Air Force Research Laboratory (“AFRL”) for a large capacity energy storage (LCES) system at the U.S. Clear Space Force Station in Alaska.

ESS Tech, Inc. (NYSE: GWH) (the “Company”), a leading manufacturer of long-duration energy storage systems (LDES) for commercial and utility-scale applications, today announced that it has entered into definitive agreements in a registered direct offering with institutional investors for the purchase and sale of approximately $15 million of shares of Common Stock and pre-funded warrants at a price of $1.75 per share of Common Stock, which price is a premium to the closing price on January 28, 2026.