Frontier Power USA Acquires 480 MWh Long-Duration BESS Portfolio in ERCOT Texas from Bimergen Energy

Frontier Power USA (FPUSA), owned by Cerberus Capital Management, has signed an agreement to acquire a 480 MWh portfolio of three ERCOT-based long-duration BESS projects from Bimergen Energy Corporation. The projects will use Eos Energy's Z3 long-duration battery systems under a 2 GWh capacity reservation agreement. FPUSA will hold a 92.5% stake while Bimergen retains 7.5%.

Transaction date: · Source: globenewswire.com

Key facts

Transaction date
Capacity
120 MW
Transaction price
Not disclosed
Region
Texas (ERCOT)
Location
ERCOT market, Texas, USA
Continent
North America
Development status
Under Development
PPA
n.a.

Technology details

Portfolio of three ERCOT-based BESS projects with a combined capacity of 480 MWh, including two 'Texas 10' projects and one 100 MW / 400 MWh project. NTP expected for the 100 MW / 400 MWh project in mid-2026. Projects will utilise Eos Energy's American-made Z3 long-duration battery systems under a 2 GWh capacity reservation agreement between FPUSA and Eos Energy Enterprises (NASDAQ: EOSE).

Additional information

FPUSA will hold a 92.5% ownership interest; Bimergen retains a 7.5% economic interest. FPUSA's affiliate will fund 100% of equity required for construction and pay Bimergen a development fee. FPUSA will deploy its Technology Performance Insurance (TPI) framework arranged with Ariel Green to enhance project bankability. Stella Energy Solutions is acting as execution partner. Legal advisors: Simpson Thacher & Bartlett LLP and Jackson Walker LLP (Cerberus/FPUSA); Norton Rose Fulbright LLP (Bimergen). First transaction under FPUSA's exclusive project pipeline and first deployment under the Eos 2 GWh capacity reservation agreement.

Source

Original announcement: https://www.globenewswire.com/news-release/2026/05/21/3299183/0/en/FPUSA-Converts-480-MWh-of-Long-Duration-Energy-Storage-Projects-from-the-Bimergen-Energy-Portfolio.html

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