Ricoh Co. said it has erected in England the world's first billboard fueled by wind and solar power.
The 12-by-3-meter sign is on the M4 motorway linking London with Heathrow Airport, said Tom Wagland, head of the environmental management group at Ricoh's European unit.
It will advertise Ricoh products and follows the installation last year of a solar-powered board in New York's Times Square.
"The wind turbines are on top and the solar panels are mounted on the framework," Wagland said. "If the sun's out, the solar panels will be charging the battery so it can run at night" for up to 11 hours, he said.