The German energy storage market is surging strongly. Engie, Flower, MaxSolar, and Entrix announce major contracts.

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On the German energy storage market, significant reshuffles have taken place. The Engie group and the Swedish company Flower have signed a 7-year agreement for managing grid flexibility with a capacity of 126 MW, while developer MaxSolar has selected the Entrix platform to optimize a 100 MWh battery system in Bavaria.

Strategic alliance between Engie and Flower (126 MW)

French energy giant Engie and Swedish technology company Flower have entered into a long-term contract set to begin on January 1, 2029. The agreement, structured as a so-called virtual capacity lease model, is intended to facilitate financing, construction, and later commercialization of several large-scale battery projects in Germany.

The initial portfolio covered by the deal includes two assets:

  • A project developed by Flower in Hamburg with a capacity of 100 MW and 400 MWh.
  • A recently acquired project in Döllnitz (Saxony-Anhalt) with parameters of 63 MW / 257 MWh.

Under the division of responsibilities, Flower will handle technical development and ongoing optimization of battery operations. Engie, on the other hand, will be responsible for energy trading on the exchange, market risk management, and portfolio balancing. Both companies have already announced their intention to expand cooperation to other European flexibility markets.

MaxSolar uses Entrix AI for a 100 MWh grid project

In parallel, German renewable energy developer MaxSolar has announced a partnership with Entrix, a company known from the Polish market. The agreement covers optimization and commercial trading for a new energy storage facility with a capacity of 20 MW and 100 MWh (a 5-hour battery).

The installation is being built in Winterschneidbach near Ansbach (Bavaria) and is commissioned directly by the distribution system operator N-Ergie to stabilize the local power system. The facility will operate in a purely market-based model, using Entrix’s AI algorithms to simultaneously generate profits from price arbitrage and meet grid operator requirements.

This is already the second grid-supporting system developed by MaxSolar for distribution operators in southern Germany – another similar project is being developed within the Bayernwerk grid area.

Large subsidy-free solar PV in Bavaria

Beyond the battery market, MaxSolar has also completed construction of a large photovoltaic park with a capacity of 76 MW in Amerdingen, Bavaria. The investment was built on land owned by Princess Camilla zu Sayn-Wittgenstein-Berleburg and includes nearly 127,000 modules spread across 51 hectares.

The project was built without any state subsidies – around 70% of the electricity output is secured under a long-term PPA contract, while the remainder is sold on the open market.

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