Agua Caliente Land Holdings
Agua Caliente holds what is believed to be one of the largest contiguous geothermal properties currently under development in the United States. Through land acquisitions from 2007 to 2009, it owns land in two prominent locations in Idaho - Raft River Geothermal Area (Raft River) and Crane Creek Known Geothermal Area (Crane Creek).
About Raft River
Raft River is located about 55 miles southeast of Burley in Cassia County, Idaho. It is located near the northern boundary of the Basin and Range physiographic province, which is characterized by anomalously high heat flow that has developed as a result of crustal thinning in an area of regional east-west extension. Parts of the geothermal resource at Raft River were discovered around 1950 and were first developed for geothermal power by the U.S. government in the early 1970s and 1980s. By the early 1980s, the government project confirmed the technical feasibility of obtaining geothermal power through the use of a binary plant at Raft River. Some of these lands first developed by the government are now controlled by U.S. Geothermal, a publicly traded company that developed a plant producing about 11 MW of gross power as of 2013. In addition to land owned outright, Agua Caliente has obtained leases from the Bureau of Land Management, as well as private leases on various lands surrounding the U.S. Geothermal leases.
About Crane Creek
Crane Creek is a seven-square-mile area centered on Crane Creek Hot Springs. Multiple surface hot springs are located in this region. The hot springs and geothermal resources lie within a very prominent geological vesiculation or pulsation dome structure that is most likely the source of the heated water. Published data indicates deep fluid origin with a temperature of 450+ degrees Fahrenheit. Initial geological surveys indicate a geothermal area of over 5 miles in diameter with depth of structure down to 20,000 feet. This granitic system absorbs water from its surroundings, heats this water, and drives it towards the surface, thus providing the heat and the deep recharge for that portion of the geothermal resource that is within drillable depths with present-day technology.
Based on third party expert analysis of geological and subsurface data existing as of August 2007, the probability of a successful 100 MW geothermal power development in the Crane Creek Hot Springs area is 50%. This is compared to the United States Geological Survey (USGS) estimate for the probability of success for wildcat oil and gas drilling at 1%, hard mineral developments at 0.45%. It compares favorably to estimates of successful development for other known geothermal developments by the U.S. Department of Energy of 30%.