Renault and The Mobility House Energy operate Europe’s largest stationary storage systems based on EV batteries in France, comprising more than 1,200 1st- and 2nd-life batteries in total. Both assets provide balancing services (frequency regulation), helping to stabilize the grid.
Europe’s largest stationary storage system built from EV batteries
The project utilizes the entire battery life cycle: 1st-life modules serve as a “living spare parts warehouse” in Sandouville, remain in optimal condition, and can be returned to the vehicle if necessary. After vehicle use, the batteries are transferred to a second life as stationary storage, providing control power and generating market revenue via our smart trading technology. Finally, they are recycled, which conserves resources, reduces CO₂ emissions, and improves the overall economic efficiency of e-mobility.
Scalable battery ecosystem: from the car into the large-scale storage system
Under the project name Advanced Battery Storage, Groupe Renault and The Mobility House Energy are implementing a scalable multi-site storage concept:
-
Sandouville: 720 batteries in 20 containers –
Europe's largest vehicle-based battery storage facility.
- First-life modules act as a “living spare parts warehouse”: they remain in optimal condition and can be returned to the vehicle if necessary.
- In the future, second-life batteries will be integrated to further maximize utilization.
- Flins: 480 battery modules (16 MWh) in 16 containers, in commercial operation since October 2022.
Intelligent control & commercialization:
Our
technology integrates the storage facilities into balancing power and spot
markets, provides grid services (including voltage maintenance), and optimizes
revenues through algorithmic trading.
From asset to revenue driver: batteries pay off twice
- Climate impact & resource efficiency: Maximum extension of battery life; recycling only afterwards.
- System benefits: Provision of balancing energy, grid stabilization, improved integration of renewables.
- Economic efficiency: Additional revenues for manufacturers and – in the future – for electric car drivers.
- Proof-of-Concept for V2G: Operation shows that vehicle-to-grid (V2G) is possible today with series batteries.
Longer service life, less CO₂, a more stable grid, and additional revenue: The project extends the entire battery lifecycle, integrates more renewables into the system, and converts vehicle batteries into marketable flexibility.