France-based solar module manufacturer HoloSolis has secured €220 million (~$255 million) in financing for its solar panel plant in Hambach in the Moselle prefecture.

The company, which claims to be building the largest solar module plant in Europe with a capacity of 5 GW, has also secured two new private partners, Calès Technologie and Forming, who have together committed an investment of €13 million (~$15 million) in the facility.

Calès is a turnkey engineering and construction solutions provider for industrial and energy projects. Forming specializes in cold profiling and structural design for solar power projects.

According to HoloSolis, construction of the plant is scheduled to begin in 2026, with the first modules utilizing N-type TOPCon technology expected to be rolled out in 2027. At full capacity, the facility will produce more than 10 million solar panels annually.

HoloSolis has already partnered with InnoEnergy, Armor Group, IDEC, TSE, and Heraeus. “Several photovoltaic developers have chosen to invest in the project, and we have a total of more than 20 GW of customer letters of intent, which demonstrates the strength of our business model,” according to CEO Bertrand Lecacheux.

In June this year, European Commission-backed solar panel manufacturer Heliup commissioned its pilot 100 MW solar module manufacturing facility in France. It will focus on producing lightweight modules utilizing ultra-thin glass.

In 2024, the European Parliament approved the Net-Zero Industry Act to promote the production of net-zero technologies within the European Union. The Act aims to have Europe produce 40% of its net-zero technology needs by 2030 and capture 15% of the global market for these technologies.

France added 1,442 MW of solar capacity in the first quarter of 2025, a 34.76% year-over-year increase from 1,070 MW, according to the country’s Ministry of Energy Transition. Solar installations during the quarter were also the highest for any first quarter since 2010.