Companies

ESS Tech Inc

NYSE: GWH

GWH at a Glance

Earnings
Next report
Nov 11, 2026

NYSE: GWH

About ESS Tech

ESS Tech, Inc. (NYSE: GWH) is a provider of non-lithium energy storage solutions for commercial and utility-scale applications. Founded in 2011, the company develops iron flow battery technology and is expanding into sodium-ion battery energy storage systems (BESS). ESS's product portfolio includes the Bridge™ modular sodium-ion AC solution and associated Energy Management Systems. The company is pursuing opportunities across data centers, critical infrastructure, AI infrastructure, and utility markets, positioning itself as a domestic manufacturer of American-made energy storage. ESS has a letter of intent with Alsym Energy for 8.5 GWh of U.S.-made sodium-ion cells and modules, and is in early-stage discussions for a strategic business combination with a private energy-sector company. The company remains in an early commercialization phase with minimal revenue and significant operating losses. Updated

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What does ESS Tech do?

ESS Tech, Inc. (NYSE: GWH) is a provider of non-lithium energy storage solutions for commercial and utility-scale applications. Founded in 2011, the company develops iron flow battery technology and is expanding into sodium-ion battery energy storage systems (BESS).