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• An alternative approach for voltage prediction of a single cell H-SOFC has been developed. • Model is based only on physical, geometrical and material properties of the fuel cell. • A validation process is done. The aim of this study is to develop a new approach for modeling the voltage of H-SOFC. The proposed 0-D model collects electrochemical, thermal, electrical and flow parameters. The main aim is to have a combination of all cell working conditions in as a low number of factors as possible and to have factors that are relatively easy to determine. Various experimental data was collected and the results of the validation process are shown. Various fuel mixtures across relatively wide ranges of parameters were used to validate the model. [ABSTRACT FROM AUTHOR]