Beyond being an independent solar energy producer, Amarenco wants to be a player in the decarbonization and transformation of our economic model.
We are repowering Claudia, our battery energy storage facility located in Saucats (France).
Originally designed as a 1 hour BESS, Claudia is now being upgraded to 2 hours of storage, doubling its energy capacity and significantly increasing its value for the power system!
Why does it matter? Because as renewables grow, flexibility becomes just as critical as production. Longer-duration storage means better frequency control, improved balancing, and readiness for advanced grid services like grid-forming.
In practical terms, the site evolves from 105 MW / 100 MWh to 94 MW / 188 MWh, extending the asset’s lifetime while reusing existing infrastructure: a strong example of how repowering can combine performance and sustainability.
This project is also built on solid foundations: a hybrid battery architecture (NMC & LFP) to maximize safety and resilience, and a long-term public-private partnership with Caisse des Dépôts joining the project alongside Amarenco. The debt is carried by Société Générale and Rabobank.
Claudia also benefits from a long-term operating framework that provides Amarenco with strong visibility on future revenues, through a tolling agreement provided by ENGIE. This structure strengthens the asset’s financial robustness and confirms the economic relevance of large-scale storage infrastructure.
First battery deliveries are expected in spring 2026, with commercial operation planned for early 2027.
Claudia represents more than ever a key step in building Amarenco’s European storage platform to support the next phase of the energy transition.
