Abstract
CRIEPI started the Ogachi project in the northern part of Japan in 1986, to determine the feasibility of an HDR geothermal power plant based on a multi-layer reservoir. During the past fifteen years we have developed technologies for surveying underground resources, forming multi-layer reservoirs and evaluating those reservoirs in a 1.7 billion yen study. Future plans include the development of a lifespan evaluation method, the improvement of production rates and finally, the establishment of an actual HDR power plant.
