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Geothermal Development and the Use of Categorical Exclusions Under NEPA

Published by National Renewable Energy Laboratory | Department of Energy | Catalog Last Checked: August 03, 2026 at 01:00 AM | Dataset Last Updated: February 09, 2022 at 04:35 PM
This study focuses primarily on the Categorial Exclusions (CX) process and its applicability to geothermal exploration. In this paper, we: - Provide generalized background information on CXs, including previous NEPA reports addressing CXs, the process for developing CXs, and the role of extraordinary circumstances; - Examine the history of the Bureau of Land Management's (BLM) geothermal CXs; - Compare current CXs for oil, gas, and geothermal energy; - Describe bills proposing new statutory CXs; - Examine the possibility of standardizing geothermal CXs across federal agencies; and - Present analysis from the Geothermal NEPA Database and other sources on the potential for new geothermal exploration CXs. As part of this study, we reviewed Environmental Assessments (EAs) conducted in response to 20 geothermal exploration drilling permit applications (Geothermal Drilling Permits or Notices of Intents) since the year 2001, the majority of which are from the last 5 years. All 20 EAs reviewed for this study resulted in a Finding of No Significant Impact (FONSI).

Resources

4 resources available

  • CX Data - geothermal-mining and oil and gas.xlsx

    XLSX
  • GRC PAPER - Geothermal Development and the Use of Categorical Exclusions Under NEPA.pdf

    PDF
  • GRC POSTER - Geothermal CXs.pdf

    PDF
  • GRC PRESENTATION - Categorical Exclusions.pdf

    PDF

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