Present status of the Ogachi HDR Project, Japan, and future plans

CRIEPI initiated 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 eleven years technologies have been developed for surveying underground resources, forming multi-layer reservoirs and evaluating these reservoirs in a 1.4 billion yen study. Future plans include the development of a lifespan evaluation method, the improvement of production rates and ®nally, the establishment of an actual HDR power plant. # 1999 CNR. Published by Elsevier Science Ltd. All rights reserved.