ESS Tech, Inc. (GWH)
About ESS Tech, Inc.
ESS Tech Inc is a long-duration energy storage company specializing in iron flow battery technology. It develops and manufactures long-duration energy storage systems based on iron flow battery technology. The company's batteries use earth-abundant materials, including iron, salt, and water, and are designed for high cycle life and recyclability. It operates as a single business operating segment, which includes all activities related to the design, engineering, and manufacturing of the company's long duration energy storage products. The company's revenue is derived from the sale of its energy storage products and from service contracts.
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Financial summary
- Revenue FY2025
- $1.6M
- Net income
- -$63.4M
- Total assets
- $51.2M
- Market cap
- $22.1M
Source: SEC EDGAR · updated Jun 8, 2026
15-minute delayed · data by Polygon.io
Past year · hover for prices
52-week range
- Market cap
- $22.1M
- Shares outstanding
- 137.9M
- Open
- —
- Day range
- –
- Prev close
- —
- Volume
- —
- IPO date
- Oct 11, 2021
ESS Tech, Inc. (GWH) Stock Price
- Reported a net loss of $63.4M in FY2025.
- Trading 98% below its 52-week high.
Automatically generated from public filings and market data. Informational only — not investment advice or a recommendation to buy or sell any security.
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ESS Tech, Inc.: frequently asked questions
Is ESS Tech, Inc. an American company?
ESS Tech, Inc. is a US-based company headquartered in Wilsonville, Oregon, listed in the americancompanies.com directory of American companies. Its American-origin credentials have not yet been independently verified.
Where is ESS Tech, Inc. headquartered?
ESS Tech, Inc. is headquartered in Wilsonville, Oregon, United States.
Is ESS Tech, Inc. publicly traded?
Yes — ESS Tech, Inc. is a publicly traded company. Its stock trades under the ticker symbol GWH on the NYSE.
What does ESS Tech, Inc. do?
ESS Tech, Inc. is an American Electrical company in the Energy & Utilities sector.
