
Frontier Power USA (FPUSA) has exercised its exclusive right to convert four battery energy storage projects developed by Stella Energy Solutions, totaling approximately 230 MW / 920 MWh capacity, onto its platform. These projects will use Eos Energy's long-duration Z3 batteries and mark the first under their strategic partnership to advance over 2 GWh of Stella's projects. FPUSA will fully fund construction equity, with Stella as the execution partner, aiming to deploy American-made long-duration storage in ERCOT. This move is supported by investments from Cerberus Capital, Hudson Bay Capital, and ongoing financing efforts with KKR Capital Markets.