ESS Tech Acquires VoltStorage IP and Assets
Written by Emily J. Thompson, Senior Investment Analyst
Updated: 2 days ago
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Should l Buy GWH?
ESS Tech announced the acquisition of the intellectual property and assets of VoltStorage GmbH, a pioneer in iron-salt battery technology. "This acquisition accelerates our mission to provide clean, reliable, and affordable energy storage solutions worldwide," said Drew Buckley, CEO of ESS. "By combining decades of iron flow battery expertise across two companies at ESS, we are accelerating innovation to create the most advanced iron-salt battery platform for long-duration storage." Through the transaction, ESS also gains access to VoltStorage's patent portfolio and key personnel. The financial terms of the deal were not disclosed.
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Analyst Views on GWH
Wall Street analysts forecast GWH stock price to rise
1 Analyst Rating
1 Buy
0 Hold
0 Sell
Moderate Buy
Current: 1.560
Low
3.50
Averages
3.50
High
3.50
Current: 1.560
Low
3.50
Averages
3.50
High
3.50
About GWH
ESS Tech, Inc. is a long-duration energy storage company specializing in iron flow battery technology. The Company designs and produces long-duration batteries using earth-abundant materials. Its batteries provide flexibility to grid operators and energy assurance for commercial and industrial customers. Its technology addresses energy delivery, duration, and cycle-life in a single battery platform that compares favorably to lithium-ion batteries. Using its iron flow battery technology, the Company is developing two products, such as the Energy Warehouse and Energy Center. Energy Center solutions are designed specifically for utilities, independent power producers (IPPs), and large commercial and industrial consumers. The Company’s batteries are non-flammable and non-toxic and can operate in a wide range of temperatures from -15 degrees Celsius (C) to 50 degrees C with minimal auxiliary loads.
About the author
Emily J. Thompson
Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.
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- Extensive Experience: Selesky brings over 20 years of leadership experience in the energy sector, having previously served as CCO at VoltStorage, where he successfully drove market expansion and commercial strategy implementation, which is expected to provide new growth momentum for ESS.
- Growing Market Demand: With the rising global demand for long-duration energy storage solutions, Selesky's addition will help ESS expand its market share and meet the increasing needs for grid reliability and renewable integration, facilitating the company's transition towards a decarbonized energy system.
- Strengthened Strategic Execution: This appointment is part of ESS's leadership transformation aimed at enhancing governance and financial discipline, with Selesky playing a crucial role in improving execution and delivering high-performing market-ready solutions.
See More
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- Executive Leadership: The call will be hosted by CEO Drew Buckley and CFO Kate Suhadolnik, followed by a Q&A session aimed at enhancing investor engagement and providing deeper insights into the company's strategic direction.
- Updates on Organizational Changes: The meeting will provide updates on recent organizational changes, commercial progress, and customer deployments, reflecting the company's ongoing development and adaptability in the long-duration energy storage sector.
- Reaffirming Strategic Priorities: ESS Tech will outline its strategic priorities for the future during the call, emphasizing its leadership in sustainable energy storage solutions and commitment to accelerating decarbonization efforts.
See More
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- Conference Call Announcement: ESS Tech will hold a conference call on March 5, 2026, at 5:00 p.m. EST to discuss its financial results for Q4 and the full year 2025, with a press release to provide detailed insights prior to the call.
- Executive Leadership: The call will be hosted by CEO Drew Buckley and CFO Kate Suhadolnik, followed by a Q&A session, aimed at enhancing investor engagement and transparency regarding the company's performance.
- Strategic Updates: The discussion will include updates on recent organizational changes, commercial progress, and customer deployments, reflecting ESS Tech's ongoing commitment to advancing sustainable energy storage solutions and strategic priorities.
- Replay Availability: A telephone replay will be accessible until March 12, 2026, allowing investors who missed the live call to obtain key information by dialing the provided numbers, ensuring comprehensive communication of essential updates.
See More
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- Strategic Acquisition: ESS Tech, Inc. announced the acquisition of VoltStorage GmbH's intellectual property and assets, combining two complementary technologies to deliver the most flexible and cost-effective long-duration energy storage solution on the market, which is expected to enhance the company's competitive position in the industry.
- Technology Integration: This acquisition adds VoltStorage's portfolio of patents and technical developments to ESS's expertise in iron flow batteries, which is anticipated to accelerate innovation and drive strategic growth while expanding market reach.
- Setting New Industry Standards: The combined platform is set to establish new industry standards for performance, sustainability, and affordability, enabling utilities, renewable developers, and industrial customers to discharge energy over extended durations, thereby improving grid reliability and increasing the usable value of intermittent renewable generation.
- Cost Efficiency Advantage: ESS expects that by integrating these technologies, it will provide the industry's lowest Levelized Cost of Energy (LCOE), further advancing its mission to deliver clean, reliable, and affordable energy storage solutions worldwide.
See More
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- Talent Acquisition: The transaction provides ESS access to skilled personnel with deep backgrounds in electrochemistry, materials science, and technology development, which is expected to accelerate strategic growth and expand market reach, further solidifying its leadership in long-duration energy storage solutions.
- Lowest Cost Storage: By leveraging VoltStorage's patented technology, ESS's solution will achieve the industry's lowest Levelized Cost of Energy (LCOE), enabling utilities, renewable developers, and industrial customers to discharge energy over extended durations, thus improving grid reliability.
- Sustainability and Scale: ESS's iron-based chemistry ensures environmental responsibility and operational safety, while deploying international development expertise at its U.S. manufacturing facility enhances the company's manufacturing platform to support future business expansion.
See More
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- Significant Commercial Progress: The company secured a $9.9 million contract from the U.S. Air Force Research Laboratory to deploy 27 MWh of long-duration energy storage systems at military installations, validating its battery technology's reliability and strengthening its competitive position in mission-critical infrastructure.
- Financial Structure Optimization: In October, ESS Tech closed a $40 million financing transaction to enhance liquidity, and in November, it launched an at-the-market equity offering program raising approximately $8.6 million, reflecting continued investor support for its strategic direction and improving financial flexibility.
- Clear Future Outlook: The company plans to provide an updated business outlook in 2026 and share deeper technology insights at an upcoming investor day, emphasizing that the foundation built in technology, manufacturing readiness, and customer engagement will drive stronger execution and commercial progress.
See More
ESS Appoints New Chief Commercial Officer to Drive Growth
- Executive Appointment: ESS Tech, Inc. has appointed Randy Selesky as Chief Commercial Officer, responsible for global commercial strategy, sales, and marketing, aiming to accelerate the commercialization of its long-duration energy storage solutions and enhance market competitiveness.
- Extensive Experience: Selesky brings over 20 years of leadership experience in the energy sector, having previously served as CCO at VoltStorage, where he successfully drove market expansion and commercial strategy implementation, which is expected to provide new growth momentum for ESS.
- Growing Market Demand: With the rising global demand for long-duration energy storage solutions, Selesky's addition will help ESS expand its market share and meet the increasing needs for grid reliability and renewable integration, facilitating the company's transition towards a decarbonized energy system.
- Strengthened Strategic Execution: This appointment is part of ESS's leadership transformation aimed at enhancing governance and financial discipline, with Selesky playing a crucial role in improving execution and delivering high-performing market-ready solutions.
See More
ESS Tech to Hold Conference Call on March 5, 2026, for Q4 and Full Year 2025 Results
- Conference Call Details: ESS Tech will hold a conference call on March 5, 2026, at 5:00 p.m. EST to discuss its financial results for Q4 and the full year 2025, with a press release detailing these results to be issued beforehand.
- Executive Leadership: The call will be hosted by CEO Drew Buckley and CFO Kate Suhadolnik, followed by a Q&A session aimed at enhancing investor engagement and providing deeper insights into the company's strategic direction.
- Updates on Organizational Changes: The meeting will provide updates on recent organizational changes, commercial progress, and customer deployments, reflecting the company's ongoing development and adaptability in the long-duration energy storage sector.
- Reaffirming Strategic Priorities: ESS Tech will outline its strategic priorities for the future during the call, emphasizing its leadership in sustainable energy storage solutions and commitment to accelerating decarbonization efforts.
See More
ESS Tech to Hold Conference Call on March 5, 2026 for Q4 and Full Year 2025 Results
- Conference Call Announcement: ESS Tech will hold a conference call on March 5, 2026, at 5:00 p.m. EST to discuss its financial results for Q4 and the full year 2025, with a press release to provide detailed insights prior to the call.
- Executive Leadership: The call will be hosted by CEO Drew Buckley and CFO Kate Suhadolnik, followed by a Q&A session, aimed at enhancing investor engagement and transparency regarding the company's performance.
- Strategic Updates: The discussion will include updates on recent organizational changes, commercial progress, and customer deployments, reflecting ESS Tech's ongoing commitment to advancing sustainable energy storage solutions and strategic priorities.
- Replay Availability: A telephone replay will be accessible until March 12, 2026, allowing investors who missed the live call to obtain key information by dialing the provided numbers, ensuring comprehensive communication of essential updates.
See More
ESS Acquires VoltStorage IP to Enhance Energy Storage Solutions
- Strategic Acquisition: ESS Tech, Inc. announced the acquisition of VoltStorage GmbH's intellectual property and assets, combining two complementary technologies to deliver the most flexible and cost-effective long-duration energy storage solution on the market, which is expected to enhance the company's competitive position in the industry.
- Technology Integration: This acquisition adds VoltStorage's portfolio of patents and technical developments to ESS's expertise in iron flow batteries, which is anticipated to accelerate innovation and drive strategic growth while expanding market reach.
- Setting New Industry Standards: The combined platform is set to establish new industry standards for performance, sustainability, and affordability, enabling utilities, renewable developers, and industrial customers to discharge energy over extended durations, thereby improving grid reliability and increasing the usable value of intermittent renewable generation.
- Cost Efficiency Advantage: ESS expects that by integrating these technologies, it will provide the industry's lowest Levelized Cost of Energy (LCOE), further advancing its mission to deliver clean, reliable, and affordable energy storage solutions worldwide.
See More
ESS Acquires VoltStorage to Enhance Technology Portfolio
- Technology Portfolio Expansion: ESS's acquisition of VoltStorage's intellectual property and assets combines two complementary technologies aimed at delivering the most flexible and cost-effective long-duration energy storage solution on the market, thereby enhancing the company's competitiveness in renewable energy storage.
- Talent Acquisition: The transaction provides ESS access to skilled personnel with deep backgrounds in electrochemistry, materials science, and technology development, which is expected to accelerate strategic growth and expand market reach, further solidifying its leadership in long-duration energy storage solutions.
- Lowest Cost Storage: By leveraging VoltStorage's patented technology, ESS's solution will achieve the industry's lowest Levelized Cost of Energy (LCOE), enabling utilities, renewable developers, and industrial customers to discharge energy over extended durations, thus improving grid reliability.
- Sustainability and Scale: ESS's iron-based chemistry ensures environmental responsibility and operational safety, while deploying international development expertise at its U.S. manufacturing facility enhances the company's manufacturing platform to support future business expansion.
See More
ESS Tech Restructures Leadership and Financial Framework
- Leadership Restructuring: ESS Tech completed a comprehensive leadership transition at the beginning of 2026, appointing Drew Buckley as CEO, Kelly Goodman as Chief Strategy Officer, and Kate Suhadolnik as CFO, aiming to enhance governance, execution, and financial discipline to lay the groundwork for long-term value creation.
- Significant Commercial Progress: The company secured a $9.9 million contract from the U.S. Air Force Research Laboratory to deploy 27 MWh of long-duration energy storage systems at military installations, validating its battery technology's reliability and strengthening its competitive position in mission-critical infrastructure.
- Financial Structure Optimization: In October, ESS Tech closed a $40 million financing transaction to enhance liquidity, and in November, it launched an at-the-market equity offering program raising approximately $8.6 million, reflecting continued investor support for its strategic direction and improving financial flexibility.
- Clear Future Outlook: The company plans to provide an updated business outlook in 2026 and share deeper technology insights at an upcoming investor day, emphasizing that the foundation built in technology, manufacturing readiness, and customer engagement will drive stronger execution and commercial progress.
See More
