The planned 7.5 MW/30 MWh zinc-bromine battery project in Gaggenau, Germany, is being structured as a long-term infrastructure investment, with Stadtwerke Gaggenau and investment company JP Holding, parent of Capac, jointly investing €15.2 million ($16.8 million). The partners plan to earn revenue from arbitrage trading in day-ahead and intraday markets plus additional ancillary services.
Lifecycle economics
Benjamin Henecka, CEO of Capac Energy, said the zinc-bromine battery technology is designed for a 25-year operating life with capacity degradation of around 3.6% over that period. He highlighted the non-flammable, water-based electrolyte, no thermal runaway risk and a different fire-risk profile from conventional lithium-ion systems.
Henecka argued that lifecycle value—lower capacity degradation and reduced need for capacity additions or replacements—can justify a higher initial investment.
That argument matters for LDES market analysis because upfront capital cost is only one variable. Duration, degradation, replacement cycles, insurance, fire protection and maintenance all affect the levelised cost of storage. A chemistry with a 25-year design life and low degradation may be attractive even at a higher headline price if it avoids mid-life augmentation.
Supply-chain diversification
Henecka said the Eos partnership offers a practical way to reduce exposure to Chinese-dominated lithium-ion supply chains. Capac frames this as broadening European utilities’ choice of technologies and suppliers and reducing concentration risk, rather than achieving complete supply-chain independence. The company combines the alternative technology with local engineering, system integration and long-term operational support.
The Gaggenau investment is therefore not just a technology bet. It is also a procurement and risk-management strategy. European utilities face pressure to secure storage capacity while managing dependence on a concentrated lithium-ion supply chain.
Pipeline context
In June 2026, Capac and Eos unveiled plans for a 5 MW/22 MWh zinc-bromine project in Bruchsal and announced a deal covering 2 GWh of storage capacity across Germany, Austria and Switzerland through 2031. The Gaggenau project adds to that pipeline and tests whether municipal utilities will pay for lifecycle value and supply-chain diversification.
The key market test will be whether arbitrage and ancillary revenues, combined with low degradation, support the €15.2 million investment over a multi-decade horizon.
This article was assisted by AI analysis. Please refer to the original source for official information.