Entech and Swiss-based Primeo Energie have formalised the creation of a joint venture named Primtech Batteries, dedicated to the development, construction and operation of stationary battery storage projects. The partnership aims to reach a total installed capacity of at least 100 megawatts by 2029, focusing initially on the French market, with potential expansion into other European Union countries.
A rapidly growing European market
The increasing demand for storage systems is driven by the rise of intermittent renewable energy sources and the need to ensure grid flexibility. While some European markets have already invested heavily in stationary battery systems, France still has relatively few large-capacity installations. In this context, Primtech Batteries will leverage Entech’s industrial experience in storage system development and construction, and Primeo Energie’s expertise in asset management and optimisation.
The first project, with a capacity of 14 megawatts, has received the necessary approvals and will be built during 2026, with commissioning scheduled for the end of the year. Several similar-capacity projects are currently under preparation, with deployment expected from 2027 onwards.
Balanced division of responsibilities
Entech will be responsible for the engineering, construction and maintenance of the infrastructure, while Primeo Energie will oversee battery value optimisation on electricity markets, including system services, capacity mechanisms, Day-Ahead trading and Intraday markets. The goal is to maximise revenues generated by these assets by integrating them efficiently into existing market mechanisms.
Primtech Batteries will have an equally shared ownership structure, with both partners holding 50% of capital and voting rights. The governance model includes a chairman representing Primeo Energie and a managing director appointed by Entech, both with equal authority.
Strategic positioning for both companies
This initiative aligns with Entech’s strategic roadmap to expand in the energy storage sector. For Primeo Energie, the project strengthens its activities in decentralised energy solutions, betting on the economic potential of stationary storage to address grid balancing challenges.
