Offshore windfarms 'can provide more electricity than the world needs'

Supplies from turbines will prove to be the next great energy revolution, IEA predicts

Erecting wind turbines on the world's best offshore sites could provide more than enough clean energy to meet global electricity demand, according to a report.

A detailed study of the world's coastlines has found that offshore windfarms alone could provide more electricity than the world needs - even if they are only built in windy regions in shallow waters near the shore.