a leading manufacturer of long-duration iron flow energy storage systems (“LDES”) for commercial and utility-scale applications, highlighted the findings of a final report issued in connection with Burbank Water and Power for the American Public Power Association (APPA) to evaluate the application of ESS’ Iron Flow Battery technology in a real-world utility environment.
The report, prepared under the APPA’s Demonstration of Energy & Efficiency Developments program, documented the installation, operation, and evaluation of an ESS Energy Warehouse system. According to the report, the system was successfully installed, energized, and operated through the 21-month project evaluation period co-located with a solar resource, with Burbank Water and Power concluding that ESS’ Iron Flow Battery technology works and there is a place for this battery in a utility’s overall energy storage strategy.
“This project provides another example of how ESS iron flow technology can perform in an operating utility environment,” said Drew Buckley, Chief Executive Officer of ESS. “Third-party demonstration projects like this are important because they show how the technology performs in real-world utility applications. The project helps validate the underlying strengths of our core technology, which carry through to our next generation Energy Base product: long-duration performance, a safe and non-flammable chemistry based on iron, salt and water, and the value of a solution manufactured in America as utilities look for durable energy storage alternatives to lithium-ion.”
The Burbank Water and Power final report noted several attributes of the system and underlying chemistry, including the use of iron, salt, and water, non-flammable and sustainable, easily sourced components, domestic manufacturing, and a projected long operating life. The report also stated that utility personnel were successfully trained on operation and maintenance of the system and that the project supported broader education and engagement around iron flow battery technology.
“We collaborated with APPA to understand the potential for long duration energy storage to support our future energy and zero carbon energy generation requirements,” said Mandip Samra, General Manager of Burbank Water and Power. “The project with ESS and APPA demonstrated that safe, long duration battery alternatives are viable, and can benefit our grid. We appreciate APPA’s leadership.”
The findings align with ESS’ focus on delivering long-duration energy storage solutions designed to support grid reliability, renewable integration, and energy resilience for utilities, independent power producers, and commercial and industrial customers. That focus is reflected in the Company’s broader commercial momentum, including Project New Horizon with Salt River Project in Arizona, which includes Google participation, ESS’ contract supporting a large-capacity energy storage deployment with the United States Air Force Research Laboratory, and ongoing collaboration with key partners to advance the commercialization of iron flow battery systems.
About ESS Tech, Inc.
ESS (NYSE: GWH) is the leading manufacturer of long-duration iron flow energy storage solutions. ESS was established in 2011 with a mission to accelerate decarbonization safely and sustainably through longer lasting energy storage. Using easy-to-source iron, salt, and water, ESS iron flow technology enables energy security, reliability and resilience. We build flexible storage solutions that allow our customers to meet increasing energy demand without power disruptions and maximize the value potential of excess energy. For more information visit www.essinc.com.
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