The UK’s first ‘motionless’ wind energy system has been installed on a roof in Oxford. When we think of wind energy, wind turbines naturally spring to mind – elegant blades spinning to drive an electricity generator. But as the renewable energy revolution surges forward, more and more technologies are being developed to fit various niches and help wean the world off fossil fuels faster. Motionless wind energy designs, like this one from US company Aeromine Technologies, have the advantage of being quieter and somewhat safer for birds.