development of geothermal energy

Geothermal energy is an environmentally friendly, renewable power source for the Generation of sustainable electrical power

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Message: Geothermal energy from abondoned mines
Some of the geothermal well holes in Nevada are the result of exploratory mining cores. The Nevada Geothermal Power (NGP.V) pumpernickel valley project is the direct result of finding a hot spot in this manner.

In cooler climates the 'normal' earth-heat can provide a significant differential to external temperatures. In a very small scale this can be used for household heating, or on larger scales can be used to produce electricity. It all depends on the thermal source/mass and the differential temperature, which then can be computed as KW, or MW for larger sources.

For mines that are currently flooded, I would classify this as large, but relatively low differential. Could this energy be used commercially? Yes, BUT I would expect the output to be substantially less than the high differential sources.
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