Heat Extraction Methods

The document outlines three primary geothermal heat extraction methods: conventional hydrothermal systems, Enhanced Geothermal Systems (EGS), and Closed Loop/Advanced Geothermal Systems (AGS). It clarifies that Superhot Rock (SHR) is a resource characterized by temperatures at or above the supercritical temperature of water (374°C for de-ionized water), which can be accessed using either EGS or AGS methods.

• Geothermal heat extraction is categorized into three main methods: conventional (hydrothermal) systems which produce native reservoirs of heated water; Enhanced Geothermal Systems (EGS) which circulate water through fractures in hot rock; and Closed loop/Advanced Geothermal Systems (AGS) which circulate water through continuous boreholes or underground heat exchangers.

APA

Clean Air Task Force (n.d.). Heat Extraction Methods. https://cdn.catf.us/wp-content/uploads/2025/01/06153945/shr-in-context.pdf

Chicago

Clean Air Task Force. Heat Extraction Methods. n.d. https://cdn.catf.us/wp-content/uploads/2025/01/06153945/shr-in-context.pdf.

Wikipedia

{{cite report |author=Clean Air Task Force |title=Heat Extraction Methods |url=https://cdn.catf.us/wp-content/uploads/2025/01/06153945/shr-in-context.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{cleanairtaskforcendheat, author = {{Clean Air Task Force}}, title = {{Heat Extraction Methods}}, institution = {Clean Air Task Force}, url = {https://cdn.catf.us/wp-content/uploads/2025/01/06153945/shr-in-context.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }