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Enhanced Geothermal Systems (EGS)

EGS is a climate-tech innovation for producing carbon-free power by harnessing the Earth's deep heat. It involves injecting water at high pressure to create fractures in rock formations, generating steam for electricity. This technology complements intermittent renewables like wind and solar, providing firm power around the clock with minimal emissions.

Key benefits include its potential to supply vast amounts of renewable energy globally, with estimates suggesting it could provide 40 times the energy needed for net-zero emissions by 2050. However, challenges include high drilling costs and technical risks due to extreme conditions, such as elevated temperatures and corrosive environments, requiring advancements in high-temperature sensors, drilling tools, and materials.

Global progress is limited, with few operating projects like the Soultz facility in France, which began in 1987 with a capacity of 1.7 MW. The U.S. has significant geothermal potential but is in early stages, with demonstration projects supported by federal funding like DOE's GeoVision aiming for up to 60 GW capacity by 2050.

Policy support, including increased RD&D funding and permitting reforms, is crucial for EGS development to attract private investment and reduce costs. Future advances in drilling technology could make EGS more competitive.

Looking ahead, EGS has potential as a dispatchable renewable energy source, with technological improvements expected to aid in transitioning to a net-zero energy system by 2050.