This study reports for the first time the possibility of coupling the phenomenon of electrochemical promotion and the steam electrolysis process for the simultaneous production of H-2 in a single chamber solid electrolyte cell (Pt-YSZ/YSZ/Au) (working/solid electrolyte/counter). The system has been studied under methane partial oxidation, steam electrolysis and methane autothermal reforming conditions with application of different currents at 600 degrees C. The highest H-2 production rates were achieved under the last composition (autothermal reforming) and the application of negative currents over the Pt catalyst-working electrode. Thus, under those conditions, an additional increase in the H-2 production rate was observed (apart from the H-2 coming from the electrocatalytic processes), which was attributed to an intrinsic NEMCA effect in the simultaneous steam reforming of methane on the same Pt catalyst-working electrode. Hence, the novel configuration used in this work could have significant importance for the production of H-2 with higher efficiencies at mild temperature by integrating the non-faradic enhanced catalytic processes (NEMCA in steam reforming) and electrocatalytic processes (steam electrolysis) in a single chamber configuration. (C) 2011 Elsevier B.V. All rights reserved.