ESS Tech, Inc., a leading manufacturer of iron flow long-duration energy storage (LDES) systems for commercial- and utility-scale applications, today celebrated the first commercial deliveries of Energy Center™ systems to a major Florida utility and the completion of construction and initial testing of a previously announced demonstration for its partner Portland General Electric (PGE).
The ESS Energy Center™ product represents a significant advancement in ESS’ safe and sustainable iron flow technology. Advancements include a 20% increase in electrolyte energy density, improved energy storage capacity and reduced auxiliary energy requirements. Taken together, these improvements reduce costs and increase value for ESS’ customers in comparison to earlier generation ESS products.
“This has been an excellent opportunity for PGE to partner with a local manufacturer in advancing alternative energy storage technologies. Innovations like long duration batteries are key to providing reliable power to customers throughout the clean energy transition,” said Colin Solini, PGE Planning Distribution Engineer. “We look forward to beginning our own testing of the energy storage center to ensure seamless integration into our system and deliver long-term benefits to our customers.”
“These milestones represent the culmination of over a year’s work by an incredibly dedicated ESS product team,” said Eric Dresselhuys, CEO of ESS. “The market is demanding larger scale and longer duration storage to ensure grid reliability and resiliency in a time of growing demand. The Energy Center™ product will play an important role in meeting that need.”
The Energy Center™ product and ESS’ core technologies have received numerous certifications to internationally recognized standards including UL 1973, UL 9540A and IEEE 693 – High, together demonstrating the superior safety and resilience of ESS’ products.
The company plans to ramp Energy Center™ system production through the first half of 2025 to meet growing global demand for long duration energy storage. The solution is well-suited for addressing a variety of larger-scale front-of-the-meter and behind-the-meter applications for utilities, independent power producers and commercial customers.
