Hot rock water drill could reduce cost of geothermal energy

[Aurora]

The Guardian - 19/05/10

A novel drill that is inspired by a jet engine and uses super-heated water to carve through rock could help make clean energy from underground rocks more economically viable, according to its backers at Google.

Potter Drilling is part-funded by Google.org - the internet search giant's philanthropic arm - and wants to use its technology to develop geothermal energy, which involves tapping the energy from hot rocks deep in the Earth.

Article continues ...