ESS Tech Inc (GWH)

In October 2025, ESS Tech's stock surged, driven by its energy storage arrangement with Salt River Project (SRP). In August 2025, the company announced its Q2 2025 earnings, reporting GAAP revenue of $2.4 million. In September 2025, ESS Tech announced its Q3 2025 financial results, highlighting continued execution of its strategic plan. In January 2026, the company announced a $9.9 million contract from Concurrent Technologies Corporation and the U.S. Air Force Research Laboratory. In February 2026, Drew Buckley was appointed CEO.

The information available does not explicitly detail a specific seasonal pattern for the demand. However, there is a growing demand for long-duration energy storage solutions, driven by the need for resilient energy, increasing energy demands from AI data centers, and an increasingly electrified society. ESS Tech anticipates a revenue ramp in the second half of 2025 and aims for EBITDA and cash flow positivity in 2026 and beyond.

ESS Tech, Inc. (GWH) specializes in long-duration iron flow batteries for commercial and utility-scale applications, aiming to accelerate global decarbonization with safe and sustainable energy storage solutions. Their iron flow battery technology uses earth-abundant materials, making it environmentally friendly. Major products include Energy Warehouse®, Energy Center™, and Energy Base™.

ESS Tech, Inc. is headquartered in Wilsonville, Oregon, with manufacturing facilities there. The company has projects and partnerships in the United States, including delivering energy centers to a Florida utility and a project with Salt River Project (SRP) in Arizona. Strategic partnerships are in place in Australia to deploy LDES, with initial utility projects announced in Queensland. ESS Tech launched in Europe in 2022 and announced a major partnership with German energy generator LEAG for an iron flow battery system at the Boxberg Power Station.

ESS Tech, Inc. has received positive recognition for its innovation and green technology. In April 2025, ESS Tech was named one of TIME's Top GreenTech Companies in America 2025 and one of Fortune's Most Innovative Companies in America 2025.

ESS Tech, Inc. has a mix of institutional and individual owners, with 54 institutional owners and shareholders holding a total of 4,129,602 shares. Major institutional shareholders include Softbank Group Corp., Arosa Capital Management LP, and Vanguard Group Inc. Individual insider transactions have also occurred, with directors and co-founders engaging in both buy and sell transactions in late 2024.