Poking around to follow up a story I read in the Klamath Fall Herald and News back in February, I came upon this wonderful resource right in Marin County.
The Geothermal Education Office has all sorts of on-line information, from a slide show to a database of where geothermal sites are in use.
What got me interested originally was hearing, on a snowy disk-slipping day of ice in Klamath Falls, that the sidewalks there are warmed by geothermal energy and thus kept free of snow. The Oregon Institute of Technology is located in Klamath Falls and naturally enough has a large interest in understanding geothermal and making use of it in this energy hungry, self-suffocating world of ours. The several proposals listed here are pretty interesting. For the particularly wonkish among you a list of consultants and equipment manufacturers is provided. And here is a list of some states and communities with geothermal resources in their bag of energy tricks. Get hot!