Technical Feasibility Aspects of the Geothermal Resource Reporting Methodology (GRRM)

Alex Badgett, Katherine Young, Patrick Dobson

Research output: Contribution to conferencePaper


This paper reviews the technical assessment of the Geothermal Research Reporting Methodology (GRRM, being developed for reporting geothermal resources and project progress. The goal of the methodology is to provide the U.S. Department of Energy's Geothermal Technologies Office (GTO) with a consistent and comprehensible means of evaluating the impacts of its funding programs. The GRRM is designed to provide uniform assessment criteria for geothermal resource grades and developmental phases of geothermal resource exploration and development. This resource grade system provides information on twelve attributes of geothermal resource locations (e.g., temperature, permeability, land access) to indicate potential for geothermal development. The GTO plans to use these Protocols to help quantitatively identify the greatest barriers to geothermal development, develop measureable program goals that will have the greatest impact to geothermal deployment, objectively evaluate proposals based (in part) on a project's ability to contribute to program goals, monitor project progress, and report on GTO portfolio performance. The GRRM assesses three areas of geothermal potential: geological, socio-economic, and technical. Previous work and publications have discussed the work done on the geological aspects of this methodology (Young et al. 2015c); this paper details the development of the technical assessment of the GRRM. Technical development attributes considered include: reservoir management, drilling, logistics, and power conversion.
Original languageAmerican English
Number of pages21
StatePublished - 2016
Event41st Workshop on Geothermal Reservoir Engineering - Stanford, California
Duration: 22 Feb 201624 Feb 2016


Conference41st Workshop on Geothermal Reservoir Engineering
CityStanford, California

NREL Publication Number

  • NREL/CP-6A20-65900


  • drilling
  • GRRM
  • logistics
  • power conversion
  • reservoir management
  • resource reporting


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