On October 21, 2025, Eos Energy Enterprises, Inc. (NASDAQ: EOSE) and Talen Energy Corporation (NASDAQ: TLN) announced a strategic collaboration to develop energy storage capacity across Pennsylvania. The partnership will leverage Eos’s American‑made Z3 zinc‑based battery technology and Talen’s extensive generation portfolio to deliver reliable, cost‑effective power while accelerating the Commonwealth’s clean energy transition.
Under the agreement, Eos and Talen will jointly identify and develop multiple storage projects on Talen’s existing assets, including sites at or near operating Talen plants and retired fossil‑fuel plants. These projects are expected to represent multiple gigawatt‑hours (GWh) of capacity, addressing the growing electricity demand driven by planned AI and cloud computing growth in the region.
The collaboration underscores Eos’s commitment to domestic manufacturing, with its Z3 systems built in Pennsylvania using over 90% U.S.‑sourced components. The partnership also highlights the safety, duration, and reliability advantages of Eos’s zinc‑based chemistry, positioning the company to capture a significant share of the emerging AI infrastructure market.
"Our collaboration with Talen marks a significant milestone for Eos and the broader Pennsylvania energy ecosystem," said Joe Mastrangelo, Chief Executive Officer of Eos Energy. "By pairing Talen’s operational expertise and infrastructure with Eos’ safe, scalable zinc‑based storage technology, we’re demonstrating how American innovation can strengthen grid resiliency, address a national security imperative, and power the next generation of digital infrastructure with urgency."
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