A new wind-power machine has been inspired by a centuries-old idea: Persian "wind catchers."
Windation Energy Systems, a Menlo Park, Calif.-based start-up, has developed a wind appliance that looks more or less like the modern heating and cooling equipment you see on flat corporate building rooftops.
There's a 8-by-8-foot frame around a 10-foot-high cylinder. Wind blows in the top and is directed to the bottom where the wind turns a turbine to make up to 5 kilowatts of electricity. A single unit wouldn't generate enough power for an entire office building but could offset a … Read more