Europe | March 5, 2025

Ensuring Grid Stability in Germany: The Role of Gas Turbines and Energy Storage

Germany's phase-out of nuclear power and the integration of renewable energy pose significant challenges for grid stability.

 

Image for illustration purposes.

To address the issues, EnBW and TransnetBW have launched a grid stabilization plant in Marbach, southern Germany. This facility uses a quick-start gas turbine and will be complemented by a large-scale battery storage system.

The Marbach Grid Stabilization Plant

  1. Rapid Response Technology: The plant features an open-cycle gas turbine capable of delivering 300 MW of electrical power within 30 minutes. This rapid response is crucial for maintaining grid stability during emergencies, such as equipment failures.

  2. Special Grid Equipment: Unlike traditional power plants, the Marbach facility operates as “special grid equipment,” activated solely by TransnetBW to address grid imbalances. It does not participate in the general electricity market.

  3. Battery Storage Integration: EnBW is developing a 100 MWh battery storage facility at the same site, leveraging existing infrastructure to enhance grid stability further. This system will be operational by the end of 2025.

Challenges and Solutions

  • Grid Expansion Challenges: Germany’s slow grid expansion has increased the need for reserve capacity to ensure reliable power supply, particularly in transporting electricity from northern to southern regions.

  • Synergies and Efficiency: The combined use of gas turbines and battery storage at Marbach optimizes resource utilization and reduces project costs by sharing infrastructure.

Conclusion

The Marbach plant is a vital component of Germany’s evolving energy landscape, providing a reliable backup for the power grid during its transition to renewable energy. By combining rapid-response gas turbines with large-scale battery storage, Germany is enhancing grid resilience and supporting a sustainable energy future.

Source: EEPower