Vast farms of solar panels in the Sahara could provide clean electricity for the whole of Europe, according to EU scientists working on a plan to pool the region's renewable energy.

Harnessing the power of the desert sun is at the centre of an ambitious scheme. The plan is to build a Euro 450 billion European supergrid that would allow countries across the continent to share electricity from abundant green sources such as wind en ergy in the UK and Denmark, and geothermal energy from Iceland and Italy.