Embodiments of a self-sustainable solid oxide fuel cell (SOFC) system for powering a gas well comprise a first SOFC comprising a first cathode, a first anode, and a first solid electrolyte; a second SOFC comprising a second cathode, a second anode, and a second solid electrolyte; SO 2 removal equipment; a combustion circuit comprising a combustor and a circulating heat carrier in thermal connection with the combustor, the first SOFC, and the second SOFC; and one or more external electric circuits. The first anode comprises a first oxidation region configured to produce SO 2 and electrons. The second anode comprises a second oxidation region configured to electrochemically oxidize CH 4 to produce syngas and electrons and electrochemically oxidize H 2 to produce H 2 O and electrons. The external electric circuits are configured to generate power from the electrons produced in both the first SOFC and the second SOFC.