The LMS Imagine.Lab Fuel Cells solution provides all the elements to build the complete digital mock-up of a FC system. The solution allows the design and optimization of fuel cells systems and it offers a modeling environment to size components of a system, optimize architectures and geometries, develop and test control strategies. Engineers get the capability to test different gas mixture and material solutions, predict produced voltage and transient evolution of temperatures, pressures, mass flow rates and gas mass fraction throughout the system.