The storage integration of Fuel Cell Electric Vehicles (FCEVs) raises significant challenges, particularly when integrating hydrogen vessels together with batteries into contemporary storage envelopes of Battery Electric Vehicle (BEV) architectures. EDAG Group has developed solutions for the integration of both BEV and FCEV storage systems in the past, yet integration of the fuel cell system has thus far remained unresolved. To overcome this, EDAG Group partnered with Bramble Energy to integrate their PCBFCTM technology into the hybrid storage platform. Within this contribution, the integration concept of a fuel cell system into EDAG’s storage platform and a design study are illustrated, and vehicle simulations were performed for assessing the energy and H2 consumption of various design variants. The results demonstrate the potential of the integrated storage and fuel cell platform as a drop-in solution for FCEV in BEV platforms. Overall, this paper shows the importance of flexible and modular integration strategies in the development of next-generation FCEV for passenger cars or light commercial vehicles based upon electric platforms.