The HGP-A Geothermal Generator Facility began operation in June 1981 and has been continuously producing electrical power since March 1982. Changes in the chemical composition of the fluids during the operational life of the well have not only presented a number of engineering challenges to the continued production of power but have also provided a number of very valuable insights into the dynamics of the geothermal reservoir associated with the Kilauea East Rift Zone. This paper will review the evolution of the reservoir characteristics and summarize the engineering developments that have made at the HGP-A facility during the last seven years of operation.

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Copyright 1989, Stanford Geothermal Program: Readers who download papers from this site should honor the copyright of the original authors and may not copy or distribute the work further without the permission of the original publisher.