Europe’s bid to rebuild a sovereign solar-manufacturing base gained fresh momentum as HoloSolis, the French PV cell and module producer, secured more than €220 million in new public and private funding for its upcoming gigafactory in Sarreguemines-Hambach. The raise marks one of the continent’s largest solar-industrial investments in recent years and positions France at the center of Europe’s reshoring drive.
The new funding brings together long-standing backers such as InnoEnergy, TSE, Groupe IDEC, Armor Group and Heraeus, along with new investors including Calés Technologie and Forming. The capital will support final engineering work, TOPCon technology deployment, recruitment and full supply-chain setup for what is targeted to become Europe’s largest TOPCon solar cell and module facility.
HoloSolis CEO Bertrand Lecacheux said the round validates European appetite for sovereign solar manufacturing, citing more than 20 GW of customer letters of intent already secured. The gigafactory, expected to begin construction in 2026, will eventually reach a production capacity of 5 GW per year, enough to supply solar modules for one million homes annually once fully operational by 2030.
Europe’s solar manufacturing revival forms the backdrop. Across the continent, startups in PV and adjacent clean-energy fields have secured fresh funding in 2025, though at far smaller scales. France’s Solarock raised €7 million to expand its self-consumption franchise model
