Want to get off the grid? the Electric grid that is. The QR5, from U.K.-based Quietrevolution, is a residential-scale wind turbine that generates enough electricity to power a standard U.S. home or a small office. It also looks like a piece of wind-powered sculpture. Unlike the shape of a conventional windmill propeller, it’s a Vertical-axis wind turbine.
Beneath the skin is what Quietrevolution calls the world’s most efficient turbine for capturing air currents near buildings and other structures, with carbon-fiber blades shaped to grab gusty city winds without making much noise. But make sure your checkbook is fully charged: At $48,000, the QR5 costs twice as much as a traditional propeller-style unit that generates the same output. It’ll take 18 years to pay back your cost.
Product QR5 – There is a video of the QR5 in action.