An energy cell for producing electrical energy and a fuel being a mixture of hydrogen and oxygen from aqueous solutions of hydronium and oxyanions. The aqueous solution of hydronium ions is delivered to a cathode in a cathode compartment where the ions are reduced by contact with a precious metal cathode. The aqueous solution of oxyanions is delivered to an anode in an anode compartment where the ions are reduced by contact with a precious metal cathode. Electrical potential between anode and cathode is available as a source of electrical energy. Hydrogen from the cathode department and oxygen from the anode compartment are combusted to provide heat in a combustion compartment.