IBM has unveiled the prototype of a new High Concentration Photovoltaic Thermal (HCPVT) system which in addition to generating usable electricity is also capable of producing clean, potable water.

The device, which was developed by the computing giant in collaboration with Swiss power company Airlight Energy, consists of a nine-metre high concrete tower equipped with a flower-shaped solar generator at its apex, which is covered with a barrage of wafer-thin aluminium photovoltaic cells. This “sunflower” is capable of following the sun’s movement in…