The 60 feet-long billboard outside Heathrow airport is a one-off and a result of B&Q's partnership with the Energy Saving Trust to promote today's Light Saver Day and to encourage more consumers to be energy efficient.
The wind turbine is used to power the lighting on the poster and B&Q hopes that it will 'grab the attention of the public and make them think about the possibilities of micro-generation of power'.
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