World's hottest borehole nearly complete

        December 14, 2016 BBC | Iceland | renewables: geothermal

Geologists are drilling into a volcano to make the world's hottest borehole 5 km down, where temperatures exceed 500 °C. Iceland's newest geothermal plant will bring supercrticial steam to the surface in the Iceland Deep Drilling Project. 10 times more steam power will be generated than in conventional geothermal wells only 2-3 km down.