Welcome to our dedicated page for Ess Tech news (Ticker: GWH), a resource for investors and traders seeking the latest updates and insights on Ess Tech stock.
ESS Tech, Inc. develops and manufactures long-duration energy storage systems based on iron flow battery technology for commercial and utility-scale applications. Company news centers on financial results, customer deployments and commissioning of LDES projects, third-party utility demonstrations, Energy Base development, and partnerships that expand non-lithium battery storage applications.
Updates also cover collaborations with utilities, public-sector customers and technology partners, the use of iron, salt and water in ESS battery chemistry, acquisitions that add intellectual property, and financing actions supporting commercialization and manufacturing execution.
ESS (NYSE:GWH), a provider of non-lithium energy storage solutions, has been added to the Russell Microcap® Index, effective at U.S. market open on June 29, 2026.
According to ESS, index inclusion may expand institutional visibility as it develops U.S.-made sodium-ion batteries for AI, data centers and other high-growth energy markets, and advances iron flow technology.
ESS (NYSE:GWH) reported strong early customer engagement for its planned U.S.-made sodium-ion battery energy storage system (BESS), targeting short- and medium-duration uses that often rely on lithium-ion.
Early-stage customer opportunities are approaching $1 billion, prompting ESS to accelerate sodium-ion development and reallocate resources while continuing iron flow battery work.
ESS (NYSE:GWH), a manufacturer of iron flow long-duration energy storage systems, announced CEO Drew Buckley will speak in Clean Energy Group’s Beyond Lithium webinar series.
The webinar is scheduled for June 3, 2026, from 3:00–4:00 PM ET and will cover ESS’s technology, target applications, services, market readiness, and path to commercialization.
ESS (NYSE:GWH) will participate in the Sidoti Micro-Cap Virtual Conference on May 20, 2026. Chief Executive Officer Drew Buckley will hold a presentation from 2:30 PM to 3:00 PM ET in Track 1 and conduct one-on-one investor meetings.
Topics include recently reported quarterly results, technology validation, and advancing commercial opportunities in long-duration iron flow energy storage.
ESS Tech (NYSE: GWH) reported Q1 2026 results and business updates on May 7, 2026. Key developments include a 5 MW/50 MWh Project New Horizon collaboration with Salt River Project and Google, a $9.9 million AFRL contract for up to 27 MWh, acquisition of VoltStorage assets, two commissioned systems at TID, and strengthened liquidity of $21.5 million.
Q1 revenue was $128,000; net loss was $(15.9) million and adjusted EBITDA loss improved 31% year-over-year.
ESS Tech (NYSE: GWH) highlighted a final report from Burbank Water and Power and APPA documenting a 21-month demonstration of an ESS Energy Warehouse iron flow battery co-located with solar.
The report concluded the system was installed, energized, operated successfully, and that iron, salt, and water chemistry is non-flammable, sustainable, and domestically manufacturable.
ESS (NYSE: GWH) announced successful commissioning of two long-duration iron flow battery systems at Turlock Irrigation District's solar-over-canal project in California on May 5, 2026.
The project pairs ESS iron flow LDES with solar panels above irrigation canals to improve solar usability, support water-conservation goals, and demonstrate safe, long-duration storage using iron, salt and water.
ESS (NYSE: GWH) signed a letter of intent with Alsym Energy to add 8.5 GWh of sodium‑ion cells and modules, expanding ESS’s product suite into short‑ and medium‑duration battery energy storage systems (BESS). The Na‑Series sodium‑ion chemistry is described as non‑combustible, thermally stable, and designed to reduce HVAC and fire‑suppression needs. ESS positions the combined sodium‑ion and iron‑flow platforms as a unified, non‑lithium offering for utilities, IPPs, data centers, and C&I customers, aiming to cover durations from fast, high‑power cycling to 8–24 hour long‑duration storage.
ESS (NYSE: GWH) signed a letter of intent with Alsym Energy to add 8.5 GWh of sodium‑ion cells and modules, expanding ESS from long‑duration iron‑flow systems into short‑ and medium‑duration BESS.
The partnership pairs Alsym’s non‑combustible Na‑Series sodium‑ion technology with ESS’s Energy Base® platform to offer a full non‑lithium storage portfolio for utilities, IPPs, data centers, and C&I customers.
ESS Tech (NYSE: GWH) will hold a conference call on Thursday, May 7, 2026 at 5:00 p.m. ET to discuss first quarter 2026 results, commercial progress, customer deployments, and technology milestones. A press release and presentation will be posted prior to and after the call via investor relations.