TagEnergy has officially launched France's largest stationary battery storage system in Cernay-lès-Reims, with a capacity of 480 MWh and a power output of 240 MW. This facility, inaugurated on October 1, 2026, is designed to store electricity during peak production times and release it to the grid when needed.
The significance of this project lies in its potential to enhance the stability of the French electrical grid. With an investment of 100 million euros, the facility is a collaboration between TagEnergy and the Banque des Territoires, which holds a 49% stake. The system has already injected 70.5 GWh into the grid within its first 125 days of operation, demonstrating its capability to manage energy supply and demand effectively.
Looking ahead, TagEnergy plans to develop additional large-scale battery projects in France, building on the success of this installation. The battery's lifespan is estimated to be at least twenty years, and it plays a crucial role in balancing production and consumption, particularly during fluctuations in renewable energy generation.
Editor's Note
The deployment of large-scale battery storage systems is becoming increasingly vital for energy stability and efficiency. As renewable energy sources grow, facilities like TagEnergy's in Marne will be essential for managing intermittency and ensuring reliable power supply. This trend reflects a broader shift towards sustainable energy solutions in the industrial sector.
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