Pressurised solid oxide fuel cell (SOFC) systems are a sustainable opportunity for improvement over conventional systems, featuring high electric efficiency, potential for cogeneration applications and low carbon emissions.However, SOFC systems are largely affected by uncertainties in operational and geometrical parameters. Such uncertainties propagate through the whole system affecting the final outputs, causing performance variability and affecting system reliability as well. The aim of this work is to evaluate the impact of uncertainties on a 30kW pressurised SOFC gas turbine hybrid system fueled by biogas, through a stochastic analysis. Different sources of uncertainty have been considered and their influence over system performance has been evaluated thanks to the Response Sensitivity Analysis (RSA) probabilistic method, considering also their impact on economic parameters such as the pay-back period (PBP) and the internal rate of return (IRR).
