Abstract
This paper presents the results of the operation and performance evaluation obtained from the first stage of the experiments that have been performed with the hybrid power test plant built in Awaji Island, which consists of a Concentrated Solar Power (CSP) system, biomass boilers and wind turbine. This pilot plant is the first CSP based power station in Japan and followed the requirements of Japanese Electric Utility Industrial Law. The results clearly showed that the changes in thermal performance of the pilot plant are strongly depending on solar intensity and climatic conditions specific for the site location. In addition, adjusting the amount of the biomass fuel supplied to the boilers is found effective to stabilize power output.