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Engineered Geothermal Systems from Groundsource Geothermal
GroundSource Geothermal Inc., of Redwood City, CA, which is developing shallow dry-rock engineered geothermal systems or EGS, at depths ranging between 250 and 400 feet. Unlike standard drilling, their borehole is elliptically-shaped rather than circular, reducing cuttings by 40%. - Read More
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