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Hydropower

Geothermal Resources: Mapping Earth's Heat

Explore the different types of geothermal resources worldwide and understand how geological conditions determine their energy potential

Types of Geothermal Resources

Geothermal resources vary significantly based on geological conditions, temperature, depth, and fluid content. The most accessible resources are found in volcanic regions where hot water and steam naturally circulate through permeable rock formations. However, geothermal energy exists in some form almost everywhere on Earth.

Resource classification depends on temperature and accessibility. High-temperature resources (above 225°C) are ideal for conventional power generation, while medium-temperature resources work well with binary cycle plants. Low-temperature resources are perfect for direct heating applications and ground-source heat pumps.

Resource Assessment Factors

  • • Temperature and thermal energy content
  • • Depth and drilling accessibility
  • • Rock permeability and fluid flow
  • • Water content and chemistry
  • • Proximity to energy infrastructure
  • • Seismic and environmental constraints

Interactive Geothermal Resource Mapper

Geothermal Resource Types

Resource Assessment Parameters

Resource Assessment

Potential Score:0/100
Classification:Medium-Enthalpy (Binary/Direct Use)

Development Considerations

• Ideal for binary cycle plants

Global Geothermal Resource Distribution

12.7 GW
Installed Capacity
2023
90+ GW
Technical Potential
Global
200+ GW
Enhanced Potential
With EGS
25+
Countries Using
Geothermal
Top Geothermal Countries
United States:3.7 GW
Indonesia:2.1 GW
Philippines:1.9 GW
Turkey:1.6 GW
Resource-Rich Regions
Pacific Ring of Fire:40+ GW
East African Rift:15+ GW
Icelandic Volcanic Zone:5+ GW
Western US (EGS):10+ GW

Key Insight: Geothermal resources are widely distributed globally, with the highest potential in tectonically active regions. Enhanced Geothermal Systems (EGS) could dramatically expand accessible resources beyond naturally permeable reservoirs.