Carbon scraps 5 GW French solar gigafactory amid policy vacuum

Carbon has scrapped its solar module gigafactory at Fos-sur-Mer, France. The project was designed as a 5 GW integrated manufacturing chain, one of the largest domestic solar production plays attempted in Europe. It is now dead.

Two factors killed it. First, the EU industrial policy framework did not deliver the regulatory visibility Carbon needed to underwrite the investment case. Second, investor guarantees did not materialise. Carbon attempted to reduce the project's footprint and explored a partnership with Chinese manufacturer Longi, but neither move was enough to make the numbers work.

The failure lands at an uncomfortable moment. European policymakers have repeatedly signalled intent to build out domestic solar manufacturing to reduce dependence on Asian supply chains. Carbon's project was a direct response to that signal. Its collapse suggests the gap between political intent and bankable policy mechanisms remains wide. Dutch startup Resilicon is among those still arguing European polysilicon and module production is viable (contingent on cheap renewable energy access and active policy support), but Fos-sur-Mer demonstrates the execution risk is real and immediate.

For asset managers and traders tracking EU module supply risk, the near-term read is unchanged: European-made capacity is not arriving at scale before 2028 at the earliest, and Asian import dependency remains the baseline.