GreenFire Energy has received a $2 million grant award from the US Department of Energy's Geothermal Technologies Program to investigate and evaluate the potential for low-temperature carbon dioxide-based geothermal power production technologies

摘要

GreenFire's suite of technologies, which the company refers to as “CO2E,” uses geothermally heated and pressurized carbon dioxide in closed-loop systems to produce electricity. This money will be used to initiate research and development at the St. Johns Dome, a natural CO2 dome in eastern Arizona believed to sit atop a moderate-temperature geothermal heat resource. GreenFire Energy reports that this is the first time that a geothermal project has received funding to use CO2 as the geothermal fluid instead of water.