NOVELTY - A fuel cell electric power generation system (1) has solid oxide fuel cell main component (2), and reforming reaction portion (4) with catalyst filled layer. The fuel cell electric power generation system produces electric power using generated hydrogen, methane or carbon monoxide obtained by modification of alcohol fuel. The alcohol fuel has steam and carbon ratio of 1-7, before supplying to reforming reaction portion, and fuel cell electric power generation system drives such that gaseous mixture of alcohol and fuel has temperature of 100-350 degrees C.    USE - Fuel cell electric power generation system.    ADVANTAGE - The fuel cell electric power generation system is efficiently operated using low-concentration alcohol as fuel, without environmental pollution.    DETAILED DESCRIPTION - A fuel cell electric power generation system has a solid oxide fuel cell main component and a reforming reaction portion in which hydrogen is generated by modifying alcohol fuel, and is supplied to solid oxide fuel cell main component. The fuel cell electric power generation system produces electric power using generated hydrogen, methane or carbon monoxide obtained by modification of alcohol fuel. The reforming reaction portion has a catalyst filled layer which satisfies the relation: (length of catalyst filled layer)2x 3.14/(gas inlet cross-sectional area of reforming reaction portion) is 100 or more. The alcohol fuel having adjusted concentration of 12-64 %mass is supplied to reforming reaction portion. The alcohol fuel has steam and carbon ratio of 1-7, before supplying to reforming reaction portion, and fuel cell electric power generation system drives such that gaseous mixture of alcohol and fuel has temperature of 100-350 degrees C.    DESCRIPTION OF DRAWING(S) - The drawing shows the block diagram of the fuel cell electric power generation system. (Drawing includes non-English language text)    Fuel cell electric power generation system (1)    Solid oxide fuel cell main component (2)    Combustion portion (3)    Reforming reaction portion (4)    Alcohol fuel vaporization mixing portion (5)