Click on links below for more details
Geothermal Energy Association
http://www.geo-energy.org/default.asp
U.S. Geological Survey
Geothermal Education Office
U.S. Department of Energy
CanGEA
International Geothermal Association
http://iga.igg.cnr.it/index.php
Geothermal Resources Council (Geothermal Industry Association)
California Energy Commission (Geothermal Energy)