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An enhanced geothermal system (EGS) generates geothermal electricity without natural convective hydrothermal resources. Traditionally, geothermal power systems operated only where naturally occurring heat, water, and rock permeability are sufficient to allow energy extraction. [ 1 ]
Closed-loop geothermal systems (also known as “advanced geothermal systems” or “AGS”) are a type of engineered geothermal energy system containing subsurface working fluid that is heated in a hot rock reservoir without direct contact with rock pores and fractures.: [1] [2] [3] Instead, the subsurface working fluid stays inside a closed loop of deeply buried pipes that conduct Earth’s ...
EGS Collab: The Enhanced Geothermal Systems (EGS) Collab Project is a collaboration of eight national laboratories and six universities who are working to improve geothermal technologies. EGS conducts field experiments to better understand and model rock fracturing and other elements of geothermal energy. [13] The experiment was a precursor to ...
An engineered geothermal system is a geothermal system that engineers have artificially created or improved. Engineered geothermal systems are used in a variety of geothermal reservoirs that have hot rocks but insufficient natural reservoir quality, for example, insufficient geofluid quantity or insufficient rock permeability or porosity, to ...
Geothermal Fluid - Gas, vapor and water found within the reservoir; Recharge Area - Area surrounding the reservoir that rehydrates the geothermal system. Exploration involves not only identifying hot geothermal bodies, but also low-density, cost effective regions to drill and already constituted plumbing systems inherent within the subsurface. [3]
The Geysers is the world's largest geothermal field, containing a complex of 18 geothermal power plants, drawing steam from more than 350 wells, located in the Mayacamas Mountains approximately 72 miles (116 km) north of San Francisco, California. Geysers produced about 20% of California's renewable energy in 2019. [4]
In response to these “dry” holes, the geothermal industry began developing Enhanced geothermal systems (EGS). In EGS, a “hot pan” in the earth is located and the heat is amplified by other means. This method allows for wells with insufficient or inconsistent heat to be viable candidates for synthetic geothermal electricity generation.
AltaRock Energy Inc. is a privately held corporation that focuses on the development of geothermal energy resources and enhanced geothermal systems (EGS). It is headquartered in Seattle, Washington and has a technology development office in Sausalito, California. AltaRock has filed patent applications and holds exclusive licenses for related ...