(1)When referring to enhanced geothermal systems, the term “engineered” means subjected to intervention, including intervention to address one or more of the following issues: (A)Lack of effective permeability or porosity or open fracture connectivity within the reservoir. (B)Insufficient contained geofluid in the reservoir. (C)A low average geothermal gradient, which necessitates deeper drilling.


42 USC § 17191(1)

Scoping language

For purposes of this part
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