Iceland drilling 5-km hole to tap energy from magma
Iceland Deep Drilling Project is drilling a 5-km deep hole aiming to tap energy from volcanic magma in the earth's crust. The renewable energy project, 'Thor', will utilise extremely high pressures to generate 'supercritical' steam, which is neither gas nor liquid but holds more energy than both. It is expected to be 10 times more efficient than traditional geothermal wells.