Delta Electronics.
The 400-watt HAWT turbine generates 50 kWh per month in 13.4-mph wind conditions. The rotor, which starts up in 8-mph winds, measures 49.6 inches in diameter. It includes electronic overspeed protection. The firm also makes a 1.0-kW model. 888.979.9889. www.delta-corp.com/windenergy.