US-based battery manufacturing company Eos Energy has received its first purchase order from Frontier Power USA Parent (FPUSA) under a 2GWh capacity reservation agreement.
The order will support the Redbird project, a 100MW/400MWh battery energy storage system (BESS) in Texas that will use Eos’ Z3 technology.
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The Redbird project, developed by Bimergen Energy and previously by Bridgelink, targets the Electric Reliability Council of Texas (ERCOT) market.
It was approved under an earlier joint development agreement with Eos, which supplies long-duration, zinc-based energy storage systems manufactured in the US.
FPUSA and its affiliates have acquired the Redbird project and will provide all equity needed for its construction. Bimergen retains a minority economic interest and will work with FPUSA to bring the project into commercial operation.
Eos chief commercial officer Nathan Kroeker said: “Redbird did not happen overnight. It came from years of working with Bimergen to move projects under active development toward execution.
“What FPUSA adds is the capital to turn opportunities into operating assets. That is what FPUSA was built to do, and the Redbird conversion is one of the first to prove it out.”
The Redbird project facility is designed as a four-hour system intended to provide dispatchable battery storage for ERCOT. It aims to support grid reliability, energy shifting, and ancillary services, aligning with increased demand for long-duration storage in Texas.
Bimergen co-CEO Cole Johnson said: “We developed Redbird to address growing demand for dispatchable storage in ERCOT and selected Eos because Z3 is purpose-built for the multi-hour applications the market requires.
“Combining proven technology with committed capital converts projects like Redbird into operating assets.”
With the FPUSA order, the Redbird project volume will count towards the 2GWh firm capacity reservation between FPUSA and Eos.
Eos has also indicated that this order enables it to satisfy almost half of its 1GWh master supply agreement with Bridgelink.
The company reports that it continues to develop a broader pipeline, with additional projects totalling 12GWh across ERCOT, CAISO, PJM and MISO markets.
Earlier this week, Eos and CAPAC Energy announced a binding master supply agreement covering Germany, Austria and Switzerland.
The agreement extends an existing customer partnership into a long-term framework through to 2031. It includes an initial commitment for 750MWh of capacity, with the potential to increase to 2GWh.
