Delivering large grid battery capacity
250 MW per hour output sets a global benchmark in storage, ensuring resilience and efficiency for Germany’s transmission grid.
Client
Fluence Energy
Location
Kupferzell, Germany
Markets
Priorities
Setting new standards in grid stability and sustainability
In the German state of Baden-Württemberg, CDM Smith has helped build one of the largest grid-boosting battery storage projects in the world. With 250 MW per hour output and spanning 34,000 m², the facility will cut transmission costs, optimize power line use, and stabilize the grid within milliseconds. Involved since planning, CDM Smith provides execution and construction services, supported by a 3D BIM model. Trial operation took place in 2025, reinforcing Germany’s leadership in sustainable power and resilient grid systems.
Applying advanced BIM modeling
Digital 3D models enhance planning, execution, and refinement, ensuring accuracy and efficiency throughout the construction process.
Meeting construction milestones
An early construction start got groundworks and general site development moving quickly, moving the project toward trial operation.
Contributing to energy transition
The project strengthens Germany’s sustainability goals, reducing reliance on traditional systems and supporting renewable integration.
The Kupferzell Grid Booster demonstrates CDM Smith’s role in advancing Germany’s national energy transition. In 2023, the project received the prestigious ICPMA Sustainability Award, recognizing excellence and innovation in project management. Together with Fluence Energy, the project team is setting new standards for grid stability, efficiency, and resilience, ensuring longterm benefits for Germany’s power system and its communities.
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Client
Fluence Energy
Location
Kupferzell, Germany