- Deep Heat Mining - Hot dry rock geothermal energy program in Switzerland. About the technology and the ongoing development program, including photos, maps, and diagrams.
- DOE: Geothermal Energy - Idaho National Laboratory of the U.S. Department of Energy (DOE). Includes information about use of geothermal energy, laws and standards, calendar of events and FAQ.
- DOE: Geothermal Energy Program - Research and development projects of the U.S. Department of Energy (DOE). Includes insights, technical data and publications.
- DOE: Geothermal Technologies Program - Program of the U.S. Department of Energy focusing on enhanced geothermal systems technology, hydrothermal power and technology validation.
- Energy Commission Geothermal Program - Promotes geothermal energy development in California. Includes fact sheets, documents and data.
- European Geothermal Energy Council (EGEC) - Promotes geothermal energy research and development. Includes news, events, details on joining and board of directors.


