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 leverages the entire battery life cycle: 1st-life modules, used in Sandouville as a “living spare parts inventory,” are kept in optimal condition and can be returned to vehicles when needed. After their use in vehicles, the batteries move into 2nd-life operation as stationary storage systems, provide balancing services and generate market revenues via our technology. Finally, recycling closes the loop, conserving resources, reducing CO₂ emissions and improving the overall economics of e-mobility.
Scalable battery ecosystem: from the car into the large-scale storage system
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 operate a scalable multi-site storage concept:
- Sandouville: 720 batteries in 20 containers — Europe’s largest storage system based on EV batteries.
- 1st-life modules act as a “living spare parts inventory.” They remain in optimal condition and can be returned to vehicles when needed. Over time, 2nd-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 & marketing:
Our technology
integrates the storage systems into balancing and
spot markets, provides grid services (e.g.,
voltage control) and optimizes revenues via
algorithmic trading.
From asset to revenue driver: batteries pay off twice
- Climate impact & resource efficiency: Maximum lifetime extension of the batteries; recycling at the end of life.
- System benefits: Provision of balancing capacity, grid stabilization, improved integration of renewables.
- Economics: Additional revenues for manufacturers and — prospectively — for EV drivers.
- Proof of concept for V2G: Real-world operation demonstrates that vehicle-to-grid (V2G) with production batteries is possible today.
Longer life, lower CO₂, a more stable grid — and additional revenues: The project unlocks value across the entire battery life cycle, integrates more renewables and turns EV batteries into market-ready flexibility.