ESS Named a Top GreenTech & Innovative Company for 2025
ESS Tech, Inc. has been recognized as one of TIME’s Top GreenTech Companies in America 2025 and one of Fortune’s Most Innovative Companies in America 2025, solidifying its position as a leader in sustainable energy storage solutions.
A Testament to Innovation and Sustainability
Kelly Goodman, Interim CEO of ESS, expressed pride in the company’s recognition, stating, “We are honored to be recognized as a leader in green technology and innovation. This recognition underscores our commitment to research and development, and the commercialization of safe and sustainable iron flow technology. Our commitment is reflected in our considerable IP portfolio and out-of-the-box approach to delivering gigawatt-scale long-duration energy storage projects. Our new Energy Base™ solution leverages our proven core technology to meet the needs of rapidly growing AI data centers and an increasingly electrified society.”
The awards reflect ESS’ impact on advancing the energy storage sector through cutting-edge technology. As a global leader in long-duration energy storage, ESS continues to push the boundaries of innovation. The company boasts an extensive intellectual property portfolio, including over 100 patents granted and 214 pending patent applications for its revolutionary iron flow battery technology.
Advancements in Iron Flow Battery Technology
ESS has made significant advancements in its technology, which played a crucial role in earning these prestigious awards. Recent developments include:
- 20% Increase in Electrolyte Energy Density: Enhancing storage capacity and reducing auxiliary load requirements for the company’s Energy Center product line.
- Improved Storage Efficiency: Optimizing the energy retention capacity of its iron flow batteries compared to earlier ESS products.
- Modular Energy Base™ Solution: Decoupling power and energy capacity, allowing customers to scale each component independently to meet their specific energy storage needs.
The newly introduced Energy Base™ solution is designed to deliver gigawatt-scale long-duration energy storage, surpassing lithium-ion technology in energy density and reliability. With its 22-hour battery module capability, the Energy Base™ is expected to meet the growing energy storage demands of AI data centers and support the transition to 24/7 clean energy. ESS aims to have 22-hour projects ready for deployment as early as 2027, further reinforcing its role in driving a sustainable future.
Recognized by TIME and Fortune
The recognition by TIME and Fortune is based on stringent evaluation criteria, highlighting ESS’ influence in the energy sector:
- TIME’s Top GreenTech Companies in America 2025: The award was determined through extensive data analysis conducted by Statista, which reviewed over 4,300 companies. The final selection of 250 companies was based on their positive environmental impact, product quality, leadership expertise, and innovation drive.
- Fortune’s Most Innovative Companies in America 2025: This award, also in collaboration with Statista, recognized companies based on three pillars—product innovation, process innovation, and innovation culture.
ESS’ dedication to advancing clean energy solutions and its continuous investment in research and development set it apart as a trailblazer in the energy storage industry.
Driving the Future of Energy Storage
As energy demands rise with the expansion of AI-driven industries and electrification efforts, ESS is well-positioned to meet these challenges with its groundbreaking iron flow battery technology. The company’s focus on innovation and sustainability aligns with global efforts to transition to renewable energy sources while ensuring grid reliability and resilience.
By pioneering advanced energy storage solutions, ESS not only addresses the immediate energy storage needs of industries but also lays the foundation for a cleaner, more sustainable energy landscape. The company’s commitment to scaling its solutions and refining its technology will continue to play a pivotal role in shaping the future of energy storage.
