Eos and FlexGen partnering on first US-made long duration storage solution

Courtesy: Eos Energy Enterprises

Utilities and independent power producers hoping to capitalize on domestic content tax adders for battery energy storage solutions (BESS) are about to have a game-changing new option for their projects.

Zinc-based long duration energy storage (LDES) systems manufacturer Eos Energy is partnering with battery designer and power systems integrator FlexGen Power Systems to bring the first domestic BESS option to market.

Today the companies announced they’ve signed a joint development agreement (JDA) to develop and commercialize America’s first fully integrated, domestic storage solution by combining Eos’ Z3 zinc-bromine batteries with the FlexGen HybridOS Energy Management System (EMS) and a domestic inverter and transformer package. The end result will be a customizable solution for a variety of applications, from grid-scale to behind-the-meter energy storage systems.

Eos Energy’s Z3 zinc battery. Courtesy: Eos Energy

Justin Vagnozzi, the senior vice president of global sales at Eos Energy, expects this partnership will increase Eos’ reach and deliver more value to customers of both companies by leveraging their combined pipeline of more than 50 gigawatt hours (GWh).

“This partnership not only strengthens our go-to-market strategy, but also positions us to deliver an American-made battery storage solution critical to securing America’s energy independence and national security,” Vagnozzi added.

North Carolina-based FlexGen utilizes its HybridOS EMS and Lifecycle service team to manage a rapidly growing fleet of energy storage assets for investor-owned utilities, municipal and cooperative utilities, and independent power producers.

Over time, Eos expects to source nearly 100% of the materials supply for the Eos Z3 battery from the United States. Domestic clean energy solutions are a hot commodity right now, as the U.S. scales critical manufacturing sectors, spurred by billions of dollars in Inflation Reduction Act investments. Companies are clamoring for domestic storage options in particular. When launched, this integrated solution is expected to deliver a competitive U.S. manufactured option to the market that utilizes the highest level of domestic content available.

A unique storage solution

Eos Energy, founded in Edison, New Jersey, offers an aqueous zinc battery designed to overcome the limitations of conventional lithium-ion, lead-acid, sodium-sulfur, and vanadium redox chemistries for stationary battery storage applications. The company contends its made-in-America solution is safe, scalable, efficient, and sustainable, providing utility, industrial, and commercial customers with 3 to 12-hour applications. The technology of the Z3 is specifically designed for long-duration grid-scale stationary battery storage that can assist in meeting the energy grids’ growing demand with increasing amounts of renewable energy penetration. Critically, Eos batteries are non-flammable and do not require active cooling to operate. The batteries can achieve 100% depth of discharge, do not degrade based on age, and are rated for 6,000 charge/discharge cycles before degradation.

Earlier this month, Eos Energy closed on a $303.5 million loan guarantee with the U.S. Department of Energy’s Loan Programs Office (LPO) to finance the construction of two state-of-the-art production lines producing the Eos Z3 in Turtle Creek, Pennsylvania. Two additional lines in Duquesne, Pennsylvania, may also be included as part of the loan guarantee. All four lines are expected to manufacture 8 GWh of storage capacity annually by 2027, or enough to provide electricity to over 300,000 average U.S. homes instantaneously or meet the annual electricity needs of approximately 130,000 homes if fully charged and discharged daily. The project is expected to create and maintain up to 1000 jobs.

According to the latest Energy Storage Monitor report, in the third quarter of 2024, the United States deployed a total of 3,806 MW and 9,931 megawatt-hours MW of energy storage, a new Q3 record and an 80% and 58% increase over the same span in 2023. Most of that fresh capacity came courtesy of utility-connected batteries. 

Trump’s ‘unpredictability’ shakes investors – This Week in Cleantech

This Week in Cleantech is a weekly podcast covering the most impactful stories in cleantech and climate in 15 minutes or less.
wind turbines in front of an orange sunset

Renewables permitting has been ‘paralyzed’ by Trump – This Week in Cleantech

This Week in Cleantech is a weekly podcast covering the most impactful stories in cleantech and climate in 15 minutes or less.