Envision Energy, a global leader in green technology for, wind turbines, energy storage, and green hydrogen solutions, announced today that it has executed an EPC (engineering, procurement and construction) agreement to supply 120 MW / 240 MWh Lithium Iron Phosphate (LFP) battery energy storage project in Saleux, located in the Hauts-de-France region of France for Kallista Energy, a European renewable energy producer.

The Saleux site will use Envision Energy’s direct current (DC), alternating current (AC) and power conversion systems (PCS) to provide the power grid with frequency regulation services on the French transmission system operator RTE’s reserve markets. This project marks Envision Energy’s first independent battery energy storage contract in France, following recent successes in Europe. Beginning construction in June 2025, Envision Energy will supply a minimum of a 14 year long-term maintenance (LTSA) agreement, providing continuous presence in the region beyond the construction phase.

As the key component of the BESS project, the LFP battery cells will be supplied by AESC – a leading battery technology company headquartered in Japan. AESC has a state-of-the-art 10 GWh Gigafactory, located in Douai in the Hauts-de-France region in production since June 2025.

Energy storage is rapidly expanding across Europe, and Envision Energy is at the forefront with advanced Battery Energy Storage Solutions (BESS) that accelerate the integration of renewable energy into the grid. Leveraging Envision’s deep technical expertise, our systems deliver critical capabilities such as grid-forming, black start functionality, and ancillary services that support grid stability and optimise power distribution. Built with a strong emphasis on proven design, safety, and long-term reliability, Envision’s energy storage products are engineered for secure and dependable performance across their lifecycle, supporting the transition to a flexible, resilient, and net-zero energy future.