The marvels of geothermal energy have been made famous by Wyoming’s Yellowstone National Park. The U.S. National Park Service states: “with half of the earth's geothermal features, Yellowstone holds the planet's most diverse and intact collection of geysers, hot springs, mudpots, and fumaroles. Its more than 300 geysers make up two thirds of all those found on earth. Combine this with more than 10,000 thermal features comprised of brilliantly colored hot springs, bubbling mudpots, and steaming fumaroles, and you have a place like no other”. Outside the park boundaries, documented direct uses of geothermal waters in Wyoming are limited to recreational uses, spas, and resorts. There are a few other sporadic uses for aquaculture, greenhouse heating, and individual heating uses by ranchers. Previously‐ reported snow‐melting operations in Laramie and Cheyenne using ammonia heat pipes are no longer operational (J. Nydahl, 2012; personal communication). In addition to direct uses, the Rocky Mountain Oilfield Testing Center (RMOTC) has been conducting research on the feasibility of electrical power generation from co‐produced fluids (petroleum and hot water) from deep petroleum wells near Casper, WY.