Rain or shine: new solar cell captures energy from raindrops

New device is designed to prevent power output plummeting when the sun isn't shining - but practical application is still some years off

A solar panel that can generate electricity from falling raindrops has been invented, enabling power to flow even when skies cloud over or the sun has set.

Solar power installation is soaring globally thanks to costs plunging 90% in the past decade, making it the cheapest electricity in many parts of the world. But the power output can plummet under grey skies and researchers are working to squeeze even more electricity from panels.