Raft River Geothermal Success Story Marks Breakthrough in Commercializing EGS Technology


The Raft River Enhanced Geothermal System (EGS) Demonstration Project is considered by DOE to be one of their major geothermal success stories and is one of the few EGS successes worldwide. In collaboration with the U.S. Department of Energy’s Geothermal Technologies Office (GTO), EGI and the University of Utah are pushing forward the boundaries of EGS demonstration successes with “groundbreaking accomplishments at Raft River.” The goal of EGS is to create, sustain, and improve the performance of man-made geothermal reservoirs. The Raft River project, managed by EGI’s Geothermal Group and led by Dr. Joseph Moore, has succeeded in transforming a non-commercial well that could only accept 20 gallons per minute into a commercial well that now accepts 1000 gallons per minute. Tracer returns demonstrate the well is connected to the rest of the geothermal system. EGI’s success at Raft River will be an important stepping-stone on the road to our FORGE Utah project.

Because of the improvements to the well, US Geothermal, the field operator, will be able to produce an additional 2.5 megawatts, which represents an increase of approximately 25% in electric production. The Department of Energy recently published the story of Raft River’s success at Energy.gov:

EERE Success Story—Geothermal Technology Breakthrough in Idaho: Building Upon Previous EGS Accomplishments

Read more about the technical details of the Raft River Enhanced Geothermal System Project, highlighted in our April 2016 ASK EGI. Also visit the FORGE Utah website for a comprehensive overview of the FORGE Utah project.