The GENEPAC is a fuel cell stack developed by PSA Peugeot Citroën and the CEA (Commissariat à l'Energie Atomique , The French Atomic Energy Commission). This new stack delivers world-class performance and power density. The partners' goal was to design and build a compact, modular, efficient fuel cell stack with a rating of up to 107bhp and compatible with the technical automotive constraints.

PSA Peugeot Citroën has built its own research facilities at Carrières-sous- Poissy, France. The new unit is dedicated to fuel cells, their integration into vehicles, and their related technologies. In line with its commitment, PSA Peugeot Citroën is developing an innovative electric vehicle concept equipped with a range extender consisting of a hydrogen-powered fuel cell.