A 25 kW class SOFC power generation system development program was initiated by four companies; Westinghouse Electric Corporation who is an American manufacturer, The Kansai Electric Power Company, Tokyo Gas Company and Osaka Gas Company who are the Japanese UTILITIES, as a internationally jointed project in early 1989. After three years system development and manufacture, the system passed through the inspection done by Ministry of International Trade and Industry of Japan to certify the generation system to be in comfirmity with Japanese Technical Standard for Thermal Power Plant, and was installed in the test site (near Kobe, Japan) of The Kansai Electric Power Company. Installation and system checks were completed in a short time within three weeks and verification testing was initiated in the last week of February 1992. Operation went smoothly with stable operation at nominal output power of 36 kW dc and at a high fuel utilization of 85 %. System details and interim results of verification testing may be reported in this proceedings.