Deep Heat Mining - Hot dry rock geothermal energy program in Switzerland. About the technology and the ongoing development program, including photos, maps, and diagrams.

Geothermal Energy Association - Information about the Association, its membership, calendar of events, workshops, publications, and geothermal facts and figures.

Geothermal Resource Information Clearinghouse - National Renewable Energy Laboratory provides links to geothermal energy information resources on internet.

Virginia Tech Geothermal Data - Geothermal resource data for the southeastern U.S. through the Regional Geophysics Laboratory; summary of geothermal resources, technology, and potential of geothermal heat pumps in the southeastern U.S.

International Geothermal Association - Information on geothermal energy in use around the world, world conferences on geothermal, and links to related web sites.

CREST's Primer on Geothermal Energy - An introduction to geothermal energy and its benefits.

Geo-Heat Center - Center for dissemination of geothermal information and technology transfer, by the Oregon Institute of Technology. Information on geothermal energy, its utilization, and United States's geothermal resources.

International Institute for Geothermal Research - Research center in Pisa, Italy, developing and improving exploration technology and methodology, study and modelling of high and low enthalpy geothermal systems, reservoir and production engineering, and geophysical studies.

Geothermal Explorers Ltd. - Geothermal exploration and development project: website discusses borehole heat exchangers, hydrothermal systems, and Hot-Dry-Rock system. Available in English and German languages.

Geothermal Resources Council - Encourages worldwide research and development on geothermal energy resources and utilization. Calendar of events, workshops, membership information, publications, related links and other information.

New Zealand Geothermal Association - Purposes include encouraging research, development and use of geothermal energy in New Zealand.

Department of Energy - Geothermal Energy Technical Site - Maintained by Idaho National Engineering and Environmental Laboratory. Information about use of geothermal energy, U.S. laws and standards, calendar of events, FAQ, links and other.

Geothermics Journal - Peer-reviewed journal on research and development of geothermal energy, published by Elsevier Science for the International Institute for Geothermal Research. Publication charter and subscription information.

Department of Energy - Geothermal Energy Program - Describes the U.S. DOE Geothermal Energy Program and provides information and news on geothermal energy.

GEOTHERNET - Geothermal Informations for Europe - Directories of geothermal energy development and research around Europe, journals, and worldwide conferences and events. Some internet links. Includes basic information on geothermal energy technology. English or German.

Energy Commission Geothermal Program in California - Funding opportunities, contacts, related web sites and overview of geothermal energy in California.

Office of Scientific and Technical Information Geothermal Energy Technology - Online document database, updated bimonthly, of hypertext bibliographic citations of current worldwide geothermal information.

Sandia National Laboratories: Geothermal Research Department - Research in drilling and associated wellbore technologies, environmental drilling, industry partnerships, and laboratory and field-testing to evaluate new concepts.

National Renewable Energy Laboratory Geothermal Technologies Program - Information organized by topics such as technology description, program summary, research and development projects, and publications.