German utility to build 7.5MW/30MWh project using Eos’ zinc-bromide battery tech

energy-storage.news Nov 12, 2026

German utility to build 7.5MW/30MWh project using Eos’ zinc-bromide battery tech

Curated by Shubham · TechCapsules · Nov 12, 2026

AI-summarised brief · reviewed before publication

Stadtwerke Gaggenau, a municipal utility in southwestern Germany, has contracted Capac AG to construct a 7.5 MW/30 MWh battery energy‑storage system (BESS) using U.S. firm Eos Energy Enterprises’ zinc‑bromide technology. The project, slated for commissioning in 2028, will occupy the site of a former gas plant and is funded jointly by Stadtwerke Gaggenau and investor JP Holding with a €15.2 million investment. Eos’ stackable, non‑flammable batteries operate between –20 °C and +50 °C without active cooling, promising low operating costs and a 3.6 % capacity loss over 25 years. This installation may be Eos’ first European project and signals a shift toward long‑duration energy storage solutions.

💡 Why It Matters

· The deployment demonstrates a viable alternative to lithium‑ion systems, offering lower thermal management needs and higher safety.
· It also marks a critical step for Eos’ expansion into the European market, potentially reshaping the region’s grid‑storage landscape.

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