The present invention relates to a power generating apparatus using a solid oxide fuel cell. A plurality of solid oxide fuel cells, each comprising a solid oxide substrate, a porous cathode electrode layer, and a porous anode electrode layer, are stacked vertically and housed inside a walled structure. A mixture gas is supplied to each solid oxide fuel cell from above. An exhaust gas discharged from each fuel cell is burned in a space below each fuel cell, producing a flame. Each fuel cell is heated by this flame.