Enum: GeothermalSystemType

Types of geothermal energy systems, including conventional hydrothermal and enhanced/engineered geothermal systems.

URI: valuesets:GeothermalSystemType

Permissible Values

Value	Meaning	Description
HYDROTHERMAL	None	Naturally occurring geothermal system with heat, fluid, and permeability suff...
ENHANCED_GEOTHERMAL_SYSTEM	None	Engineered reservoirs created to extract heat from low permeability geotherma...
ADVANCED_GEOTHERMAL_SYSTEM	None	Closed-loop geothermal systems that circulate working fluid through wellbores...
HOT_DRY_ROCK	None	Geothermal system targeting hot basement rock lacking natural fluid or permea...
GEOPRESSURED	None	Deep sedimentary formations with abnormally high fluid pressure containing ho...
SUPERCRITICAL	None	Very high temperature systems (>374C) where water exists above its critical p...
GROUND_SOURCE_HEAT_PUMP	None	Shallow geothermal system using stable ground temperatures for heating and co...

Slots

Name	Description
geothermal_system_type	Type of geothermal system

See Also

• https://www.energy.gov/eere/geothermal/enhanced-geothermal-systems
• https://gdr.openei.org/

Identifier and Mapping Information

Schema Source

• from schema: https://w3id.org/linkml/valuesets

LinkML Source

name: GeothermalSystemType
instantiates:
- valuesets_meta:ValueSetEnumDefinition
description: Types of geothermal energy systems, including conventional hydrothermal
  and enhanced/engineered geothermal systems.
title: Geothermal System Type
from_schema: https://w3id.org/linkml/valuesets
see_also:
- https://www.energy.gov/eere/geothermal/enhanced-geothermal-systems
- https://gdr.openei.org/
contributors:
- orcid:0000-0002-6601-2165
- https://github.com/anthropics/claude-code
status: DRAFT
rank: 1000
permissible_values:
  HYDROTHERMAL:
    text: HYDROTHERMAL
    description: Naturally occurring geothermal system with heat, fluid, and permeability
      sufficient for energy extraction without stimulation.
    annotations:
      conventional:
        tag: conventional
        value: true
    title: Conventional Hydrothermal System
    broad_mappings:
    - sweet:phenEnergy/Geothermal
  ENHANCED_GEOTHERMAL_SYSTEM:
    text: ENHANCED_GEOTHERMAL_SYSTEM
    description: Engineered reservoirs created to extract heat from low permeability
      geothermal resources through stimulation methods.
    annotations:
      requires_stimulation:
        tag: requires_stimulation
        value: true
    title: Enhanced Geothermal System (EGS)
    aliases:
    - EGS
    - Engineered Geothermal System
  ADVANCED_GEOTHERMAL_SYSTEM:
    text: ADVANCED_GEOTHERMAL_SYSTEM
    description: Closed-loop geothermal systems that circulate working fluid through
      wellbores to extract heat conductively without reservoir stimulation.
    annotations:
      closed_loop:
        tag: closed_loop
        value: true
    title: Advanced Geothermal System (AGS)
    aliases:
    - AGS
    - Closed-Loop Geothermal
  HOT_DRY_ROCK:
    text: HOT_DRY_ROCK
    description: Geothermal system targeting hot basement rock lacking natural fluid
      or permeability, requiring artificial reservoir creation.
    title: Hot Dry Rock (HDR)
    aliases:
    - HDR
  GEOPRESSURED:
    text: GEOPRESSURED
    description: Deep sedimentary formations with abnormally high fluid pressure containing
      hot brine and dissolved methane.
    annotations:
      methane_recovery:
        tag: methane_recovery
        value: true
    title: Geopressured System
  SUPERCRITICAL:
    text: SUPERCRITICAL
    description: Very high temperature systems (>374C) where water exists above its
      critical point, offering higher energy density.
    annotations:
      temperature_min_c:
        tag: temperature_min_c
        value: 374
    title: Supercritical Geothermal System
  GROUND_SOURCE_HEAT_PUMP:
    text: GROUND_SOURCE_HEAT_PUMP
    description: Shallow geothermal system using stable ground temperatures for heating
      and cooling buildings.
    annotations:
      direct_use:
        tag: direct_use
        value: true
    title: Ground Source Heat Pump (GSHP)
    aliases:
    - GSHP
    - Geothermal Heat Pump