France is making a major play to strengthen its electric vehicle battery supply chain, announcing roughly EUR 1.5 billion (about US$1.7 billion) in subsidies to support Taiwanese solid-state battery specialist ProLogium Technology as it builds a new factory in France.
The support highlights how aggressively France is now competing to bring advanced EV battery manufacturing onto its soil. With European automakers pushing toward electrification and governments tightening emissions targets, battery production has become one of the most strategic manufacturing battles in the global auto industry. By backing ProLogium, France is betting on next-generation battery technology and aiming to secure future jobs, investment, and industrial know-how.
The move also reflects a notable shift in policy direction. Rather than focusing primarily on an industrial approach centered on EU-based companies and “self-reliance,” France is increasingly opening the door to international partners that can accelerate domestic production capacity. In other words, the priority is moving from who owns the company to where the technology and factories are built—and how quickly they can scale.
ProLogium is known for developing solid-state batteries, a field widely watched across the EV world for its potential advantages over conventional lithium-ion batteries. Governments and automakers alike are eager to see solid-state technology become commercially viable, as it could help unlock improvements in safety, energy density, charging performance, and long-term durability.
With this subsidy-backed factory plan, France positions itself as a more attractive destination for EV battery investment at a time when the race to localize battery manufacturing is intensifying across Europe. If executed successfully, the partnership could help France deepen its role in the European EV ecosystem while giving ProLogium a stronger foothold in the region.
