Alpiq, a Switzerland-based electricity producer and energy service provider, acquired the Cheviré operational battery energy storage project located at the port of Nantes Saint-Nazaire in western France from Harmony Energy, a European developer of battery energy storage systems (BESS).
The project, with an output capacity of 100 MW/200 MWh, was commissioned in December 2025 and is currently the largest in the country.
Harmony Energy developed and commissioned the Cheviré project, which is built on the site of the former Cheviré fossil-fuel-fired power plant. This is Alpiq’s second acquisition in France. Previously, it acquired a 100 MW/200 MWh battery energy storage project in the Oise department, north of Paris, France, from Harmony Energy in November 2024.
Alpiq currently has another 100 MW of battery storage under construction in La Corne-en-Vexin, with operations scheduled for 2027. Overall, the company has secured a BESS portfolio of over 750 MW in France, Germany, and the Nordics, with nearly half of it operational or under construction. Alpiq is also planning further investments in BESS and other storage systems in key markets across Europe.
“The acquisition of the Cheviré battery storage facility marks a milestone in the implementation of our growth strategy in the area of flexible plants and for ensuring a sustainable, secure energy supply,” says Amédée Murisier, Head of Business Division Assets and member of the Alpiq Executive Board. “Flexibility is key to integrating renewable energy and ensuring the stability of electricity grids. We are investing specifically in flexible power plants and storage facilities that help strengthen the security of supply and deliver sustainable solutions for our customers. France is a strategic market in this regard, and Cheviré represents a milestone on our path to strengthening and further expanding our position as a provider of flexibility solutions in Europe.”
According to Mercom’s 9M and Q3 2025 Funding and M&A Report for Energy Storage report, there were 45 energy storage project M&A transactions in the first nine months of 2025 compared to 22 transactions in the same period of 2024.
In January 2026, Aquila Clean Energy, a developer of integrated and hybrid clean energy solutions, sold a ready-to-build 50 MW/100 MWh battery energy storage project in Lithuania to Energy Gates, an investment management firm focused on developing large-scale renewable energy projects across the Baltic countries.
