Idaho National Laboratory

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The Snake River Geothermal Consortium (SRGC) is a research partnership focused on advancing geothermal energy. Hosted by the Idaho National Laboratory (INL), SRGC proposed establishing FORGE as a resource for technology development, deployment, and validation. Their team included members from national laboratories, universities, industry, and state and federal agencies. The technical team consisted of members from Baker Hughes, the Center for Advanced Energy Studies (CAES) – Idaho National Laboratory, University of Idaho, Idaho State University, Boise State University, University of Wyoming -  Campbell Scientific, Chena Power, Geothermal Resources Group, Idaho Department of Water Resources, Idaho Geologic Survey, Lawrence Livermore National Laboratory, Mink GeoHydro, National Renewable Energy Laboratory, University of Oklahoma, University of Utah, U.S. Geothermal, and the U.S. Geological Survey (USGS).

Snake River Geothermal Consortium FORGE Map

The SRGC proposed candidate site did not proceed to Phase 2. To learn more about their findings you can review the SRGC's Phase 1 Report and data submissions on the Geothermal Data Repository.   


SRGC’s proposed site sits within INL’s Geothermal Resource Research Area (GRRA), a parcel of secure DOE land located along the Snake River Plain in southeastern Idaho. The SRGC FORGE team will have access to the entire GRRA which measures approximate 39 mi2 (100 km2), however a designated operational area will be used for well pad development. The location was chosen to minimize required surface disturbance while maximizing subsurface access. The Department of Energy-owned site is approximately 15 mi (24 km) from the nearest city, Arco.

Technical Information

A deep geothermal exploration well, INEL-1, is approximately 3.75 mi (6 km) from the proposed FORGE location and is being used as a reference for future planning and will serve as a monitoring well for FORGE operations. Additionally there are two USGS groundwater observations wells and several observational and monitoring well located nearby the boundary of the GRRA.

Data collected from the nearby wells indicate an average gradient of 207.7°F/mi (54°C/km) and based on the bottom hole temperature of INEL-1, and the range of observed geothermal gradients, the SRGC expects to reach 350°F (175°C) at depths ranging from as little as 1.6 to 2.4 mi (2.6 to 3.8 km), with further data proving a lack of permeability.

Fun Facts
  • INL has supported a seismic monitoring program and has monitored nearby activity on the Snake River Plain since 1972.
  • INL has and supports its own stand-alone power grid, along with a full-time electrical transmission staff.
  • SRGC plans to leverage advances made in the oil and gas industries, specifically shale gas development, and bring those advances to EGS R&D.

Additional information on their team is available at, an informational video is available on INL's YouTube channel, and you can follow them on Twitter through the hashtag #SnakeRiverFORGE.