Corsica Sole and Banque des Territoires are launching France’s largest grid-connected energy storage platform
Press releases
Corsica Sole, an independent French solar energy producer and a major player in energy storage in Europe, and Banque des Territoires have announced the launch of Corsica Sole Hexagone, an investment platform dedicated to the deployment of large-scale electricity storage infrastructure across France.
As part of this strategic partnership, Banque des Territoires is acquiring a 49% stake in the platform, alongside Corsica Sole, which retains a majority stake of 51%.
A vital lever to support the energy transition
Against a backdrop of accelerating renewable energy development in France, electricity storage is emerging as a key element in ensuring grid stability and facilitating the integration of intermittent generation.
In response to these growing challenges, Corsica Sole is anticipating the need for flexibility in the electricity system and, together with Banque des Territoires, is positioning itself as a central player in this transformation.
An ambitious programme of nearly 2 GWh by 2029
The platform plans to roll out a portfolio of high-voltage projects representing a total capacity of nearly 2 GWh by 2029.
This scale corresponds, as a rough guide, to the annual consumption of a city such as Nantes or Nice. It should be noted, however, that storage batteries do not generate electricity, but enable it to be released over shorter periods to support the grid.
To support this development, an investment budget of up to €150 million has been set aside. This will finance the various stages of the projects, from their structuring to their commissioning.
At Corsica Sole, we have been operating dozens of energy storage facilities for over 10 years across a wide range of regions, including Corsica, Réunion, Belgium and Estonia. This partnership with the Banque des Territoires therefore marks a significant step up in our capacity to roll out energy storage across France and will see us move from being a pioneer to becoming the market leader in France
A flagship project in the Hauts-de-France region
One of the first projects is a storage plant currently under construction in Beuvry (Hauts-de-France), with a capacity of 50 MW / 100 MWh, which is scheduled to come on stream in early 2027.
Located on a former industrial brownfield site that once housed a coal-fired power station, this project is part of a regional regeneration initiative. The site already hosts a solar power station developed by Corsica Sole, separate from this new storage facility.
In addition, two other projects totalling 500 MW / 1 GWh are currently at an advanced planning stage, with construction scheduled to begin before the end of 2026.
A strategic partnership to accelerate the roll-out of storage
This partnership with Banque des Territoires enables Corsica Sole to significantly accelerate its development in France and to actively contribute to the stability of the electricity grid.
Energy storage is now a vital part of the energy transition. Through this partnership, we are equipping ourselves to significantly accelerate our growth in France and make a tangible contribution to balancing the electricity grid at a time of rapid change in the energy mix
By supporting Corsica Sole, Banque des Territoires is helping to develop the storage infrastructure that is essential to the energy transition in regional areas. This partnership demonstrates our commitment to investing in practical solutions that strengthen the resilience of the electricity system and facilitate the integration of renewable energy
