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Enhanced Geothermal Systems (EGS) offer a method to extract geothermal energy by increasing rock permeability deep within the Earth. This innovative approach involves fluid injection to create fractures, enabling water flow for electricity generation. While EGS projects like those in the US, Europe, and Australia show promise, they also pose seismicity risks, which require careful management and advanced technologies to mitigate.
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EGS are a method of harnessing geothermal energy by artificially enhancing the permeability of hot rock formations deep within the Earth's crust
Hydraulic Stimulation
Hydraulic stimulation involves injecting water at high pressure to create fractures in the rock, and has been used in projects like the Los Azufres field in Mexico and the Desert Peak field in Nevada
Chemical Stimulation
Chemical stimulation uses chemical agents to dissolve minerals and enhance permeability, and has been applied in Italy's Larderello field
Combined Stimulation Methods
Some projects, such as Idaho's Raft River, have combined hydraulic and thermal stimulation methods
Countries around the world, including the United States, European Union, and Australia, have invested in EGS projects to optimize the use of geothermal resources
Seismicity risks refer to the potential for induced earthquakes caused by human activities such as fluid injection in EGS projects
Proper management and monitoring of seismic risks are crucial for the safe development of EGS, as seen in the suspension of the Basel project in Switzerland
With advancements in technology and government support, EGS holds significant promise for contributing to the global energy supply as a clean and renewable energy source
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Definition of Enhanced Geothermal Systems (EGS)
EGS artificially increases permeability in hot rock formations to harness geothermal energy.
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EGS fluid injection purpose
Fluids are injected in EGS to create fractures, enabling water flow for heat extraction.
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Global regions implementing EGS projects
EGS initiatives are found in the USA, Europe, and Australia.
