These tiny wind turbines measure only 3 metres by 3 metres. They’re designed to sit on the edge of a roof and are small enough to squeeze in alongside solar panels. Wind power can be hard to integrate into an urban environment. The average turbine measures 128 metres across. Other companies have trialled smaller wind turbines for rooftops, but they can be noisy and endanger birds. Aeromine’s wind turbines are quiet, and because they have no naked blades, they protect wildlife.