TotalEnergies sells 800 MW German battery portfolio
Allianz Global Investors acquires 50 % stake in 11 battery projects, boosting grid flexibility and renewable integration in Germany.
Image for illustrative purposes
DNV acted as technical advisor to TotalEnergies in the sale of a 50 % stake in an 800 MW portfolio of battery storage projects in Germany to Allianz Global Investors (AllianzGI). The portfolio, comprising 11 projects under construction, totals 789 MW / 1,628 MWh and is expected to start commercial operations by 2028.
Valued at around $575 M (€500 M), the deal is one of the largest battery storage transactions in Germany. The projects will enhance grid flexibility, help integrate renewable energy, reduce congestion, and support the country’s energy transition goals. Key sites include Weingarten (100 MW / 203 MWh), Mehringen (147 MW / 296 MWh), and Husum (147 MW / 296 MWh).
Prajeev Rasiah, Senior VP at DNV, said the transaction underlined the role of independent technical review in large energy infrastructure deals. DNV carried out detailed technical due diligence across the portfolio, examining technology, construction schedules, and grid connections to provide a clear assessment of the assets for investors.
Iqbal Ahmad Sarabi, DNV’s senior energy storage engineer, added that evaluating project-specific factors such as system design, operational performance, and risk allocation across all 11 sites was critical to provide a robust view of performance and reliability.
Battery storage is central to Germany’s renewable energy plans, providing the flexibility needed to balance supply and demand and stabilise the grid. Under the new partnership, TotalEnergies and AllianzGI will jointly finance, build, and operate the projects, contributing to a resilient, decarbonised electricity network in Germany.
Source: DNV
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