Some See Energy in Abandoned Wells (NPR Marketplace)
One of the largest expenses in geothermal power systems is boring wells thousands of feet into the earth's crust. Now, several companies are looking at reusing existing and abandoned oil wells to serve as geothermal wells. Particularly in Texas, where there are more than half a million existing oil and gas wells, and underground temperatures and pressures are high enough to make geothermal energy extraction feasible, geothermal is getting a fresh look by a number of companies.
