GreenFire Energy Geothermal Innovation Solves CO2 EP

By Admin
Geothermal energy, which uses the Earths underground heat to generate electricity, is being pioneered throughout the world as a renewable energy source...

Geothermal energy, which uses the Earth’s underground heat to generate electricity, is being pioneered throughout the world as a renewable energy source. Companies like Chevron, AltaRock Energy, and Iceland’s Reykjavik have led the way in geothermal power generation, but none have yet addressed a common problem with many geothermal power plants: CO2 emissions. Now, Geothermal startup GreenFire Energy has teamed up with the U.S. Department of Energy and AltaRock Energy to develop an innovation that eliminates geothermal CO2 emissions.

The geothermal process taps the heat under the Earth’s crust to release dry steam or heat water or other transfer fluids to run steam turbines for electricity generation. The problem, however, is that the process can release the CO2 (carbon dioxide) that has been sequestered beneath the surface of the Earth. Excess CO2 released into the atmosphere is the very problem that is leading to global climate change as it traps heat in the atmosphere. While geothermal is a renewable energy for the most part, few people realize that it contributes to the same type of CO2 emissions problems faced by coal, oil and fossil fuel power plants.


Collaboration and Consensus Building for Arctic Offshore Oil and Gas

Beyond Solar Panels: Six Types of Solar Power Plants

The Remote Controlled Mine: Robotic and Virtual Mining Machinery and Equipment

Check out the latest edition of Energy Digital!

GreenFire Energy, a Utah (USA) based geothermal start-up, is gaining the attention of the U.S. Department of Energy. GreenFire Energy’s innovation captures the CO2 released in the geothermal process and pressurizes it to a ‘supercritical’ state, transforming the CO2 into a liquid. GreenFire then uses this CO2 liquid as the heat transfer fluid to be cycled through in a binary cycle geothermal system. The process elminates the release of CO2 emissions and actually utilizes the CO2 as a renewable heat transfer fluid, thus conserving the water or other chemical fluids traditionally used in the process.

GreenFire entered into an innovation sublicense agreement with established geothermal company AltaRock Energy in 2010 to develop the CO2-based geothermal energy. The companies are testing the CO2-based geothermal process at the St. John’s Dome geothermal location near Springville, Arizona (USA).


Featured Articles

COP27 agrees to climate compensation fund

The deal is said to be a historic first in acknowledging the vast inequities of the climate crisis

North America's natural gas can help mitigate energy crisis

In the effort towards decarbonisation, North America could be a key player in providing affordable natural gas, addressing energy security issues

COP27: Egypt and Norway to build 100MW green hydrogen plant

Plant will be built in Egypt’s Ain Sokhna region, on the Red Sea coast, and will be implemented in cooperation with Scatec, the Norwegian energy giant

Renewable energy company Masdar opens office in Saudi Arabia

Renewable Energy

Ørsted closes US$140m transaction with ECP for US portfolio

Renewable Energy

ADNOC Drilling delivers world record well at Upper Zakum

Oil & Gas