ESS Tech, Inc. (GWHT)
| Market Cap | 4.26M -85.9% |
| Revenue (ttm) | -1.17M -74.9% |
| Net Income | -65.83M |
| EPS | -2.71 |
| Shares Out | 39.37M |
| PE Ratio | n/a |
| Forward PE | n/a |
| Dividend | n/a |
| Ex-Dividend Date | n/a |
| Volume | 367,947 |
| Open | 0.1400 |
| Previous Close | 0.1000 |
| Day's Range | 0.0800 - 0.1400 |
| 52-Week Range | 0.0501 - 13.8700 |
| Beta | 1.48 |
| Analysts | n/a |
| Price Target | n/a |
| Est. Earnings | Nov 12, 2026 |
About ESS Tech
ESS Tech, Inc., an energy storage company, engages in the design and production of iron flow batteries for commercial and utility-scale energy storage applications worldwide. It offers energy storage products, which include Energy Warehouse, a behind-the-meter solution; and the gigawatt-hour energy base storage product, a fully configurable layout that integrates with any site location and that allows the power to be decoupled from the capacity. The company was founded in 2011 and is headquartered in Wilsonville, Oregon. [Read more]
Financial Performance
In 2025, ESS Tech's revenue was $1.58 million, a decrease of -74.85% compared to the previous year's $6.30 million. Losses were -$63.44 million, -26.42% less than in 2024.
Financial StatementsNews
ESS Tech Slides: Investor presentation
ESS Tech has posted slides in relation to its latest quarterly earnings report, which was published on September 28, 2026.
ESS Tech Proxy statement: Proxy filing
ESS Tech filed a proxy statement on September 24, 2026, providing details for shareholder voting and corporate governance matters.
ESS Tech Proxy statement: Proxy filing
ESS Tech filed a proxy statement on September 15, 2026, providing details for shareholder voting and corporate governance matters.
ESS Tech Registration statement: Registration filing
ESS Tech filed a registration statement on September 8, 2026, providing details about a securities offering with the SEC.
ESS Tech Transcript: Micro-Cap Virtual Conference
The conference highlighted a strategic pivot from iron flow to sodium ion batteries, driven by market demand for AI data center power solutions and U.S. supply chain incentives. Customer interest exceeds $1 billion, with commercialization and revenue growth expected to accelerate in 2027.
ESS Tech Earnings Call Transcript: Q2 2026
Q2 2026 saw a strategic pivot to sodium-ion battery solutions, with major LOIs signed for supply and deployment, and a proposed business combination aiming to strengthen scale and liquidity. Revenue declined sharply as legacy contracts wound down, but cost discipline improved cash burn and operating expenses.
ESS Tech Earnings release: Q2 2026
ESS Tech released its Q2 2026 earnings on August 11, 2026, summarizing the period's financial results.
ESS Tech Slides: Q2 2026
ESS Tech has posted slides in relation to its Q2 2026 quarterly earnings report, which was published on August 11, 2026.
ESS Tech Quarterly report: Q2 2026
ESS Tech has published its Q2 2026 quarterly earnings report on August 11, 2026.
ESS Tech Transcript: AGM 2026
The meeting covered director elections, auditor ratification, and executive compensation, with all proposals approved. No questions were raised by stockholders, and forward-looking risks were referenced in SEC filings.
ESS Tech Transcript: Sidoti Micro-Cap Virtual Conference
Iron flow battery technology targets long-duration storage needs for utilities and hyperscalers, offering cost and performance advantages over lithium-ion for 10–24 hour applications. Major contracts with Google, SRP, and the U.S. Air Force are set for delivery in 2027–2028, with a focus on commercialization and financial discipline.
ESS Tech Earnings Call Transcript: Q1 2026
Q1 2026 saw improved cost discipline, a narrowed net loss, and strategic moves including a partnership with Alsym Energy, VoltStorage acquisition, and major project wins. Technology validation and a strengthened balance sheet position the company for broader market opportunities.
ESS Tech Slides: Q1 2026
ESS Tech has posted slides in relation to its Q1 2026 quarterly earnings report, which was published on May 7, 2026.
ESS Tech Quarterly report: Q1 2026
ESS Tech has published its Q1 2026 quarterly earnings report on May 7, 2026.
ESS Tech Earnings release: Q1 2026
ESS Tech released its Q1 2026 earnings on May 7, 2026, summarizing the period's financial results.
ESS Tech Proxy statement: Proxy filing
ESS Tech filed a proxy statement on April 15, 2026, providing details for shareholder voting and corporate governance matters.
ESS Tech Proxy statement: Proxy filing
ESS Tech filed a proxy statement on April 15, 2026, providing details for shareholder voting and corporate governance matters.
ESS Tech Earnings Call Transcript: Q4 2025
2025 saw a strategic pivot to the Energy Base product, improved financials, and major contracts with the U.S. Air Force and SRP, with Google as an offtaker. Revenue is expected to ramp in 2027-2028 as deliveries begin, supported by a strengthened balance sheet.
ESS Tech Annual report: Q4 2025
ESS Tech has published its Q4 2025 annual report on March 5, 2026.
ESS Tech Earnings release: Q4 2025
ESS Tech released its Q4 2025 earnings on March 5, 2026, summarizing the period's financial results.
ESS Tech Slides: Q4 2025
ESS Tech has posted slides in relation to its Q4 2025 quarterly earnings report, which was published on March 5, 2026.
ESS Tech Earnings Call Transcript: Q3 2025
Transitioned to the Energy Base platform, securing a 50 MWh pilot with Salt River Project and $40 million in new financing. Q3 revenue fell to $200,000 with a net loss of $10.4 million, but liquidity was strengthened and the commercial pipeline is focused on long-duration storage.
ESS Tech Earnings release: Q3 2025
ESS Tech released its Q3 2025 earnings on November 13, 2025, summarizing the period's financial results.
ESS Tech Quarterly report: Q3 2025
ESS Tech has published its Q3 2025 quarterly earnings report on November 13, 2025.
ESS Tech Slides: Q3 2025
ESS Tech has posted slides in relation to its Q3 2025 quarterly earnings report, which was published on November 13, 2025.