GreenFire combines GT with CO2 sequestration

In Utah, startup GreenFire Energy wants to replace the water used to convert geothermal energy to electricity in steam turbines or binary systems with CO2. What the company calls “CO2-G or CO2 Geothermal they claim will permanently sequester carbon. In their plan, CO2 – from natural sources or captured from man-made sources such as coal-fired plants – would be used cycled through deep injection wells, some of which would become a permanent part of the geology, the rest cycled continuously back through the plant and the earth.