Uniper and Neoen Sign Seven-Year Agreement for Arneburg Battery in Germany

8 January 2026

Key highlights

Uniper secures 30 MW / 78 MWh capacity of Arneburg Battery in Germany.
The agreement starts in 2027 and lasts for seven years.
Neoen manages operations and maintenance of the battery.
Arneburg Battery is expected to be operational in 2026.

Agreement Overview

Uniper has signed a tolling agreement with Neoen for the Arneburg Battery in Saxony-Anhalt, Germany. The agreement grants Uniper control over the battery's optimization, while Neoen will handle its operation and maintenance. The contract is set to begin in 2027 and will last for seven years.

Battery Details

The Arneburg Battery has an installed capacity of 30 MW / 78 MWh. It is currently under construction and is expected to become operational in 2026. This battery marks Neoen's first venture into the German market.

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Strategic Implications

This partnership allows Uniper to enhance its portfolio by accessing a significant new battery asset in Germany. The company aims to optimize the asset across various market channels, including ancillary grid services and wholesale markets.