... 3.No need maintenance windmill for house, 20kw wind turbine generator set Technical ParameterRated power20,000W.Max ... .Start-up wind speed3m/s Work wind speed3-25m/sRotation speed120r/minNumber of blades3pcsTurbine weight800kg Tower height15m Tower typeSteel (Q235B ... 000 watt horizontal wind turbine can supply power for refrigerator, washer, water pump, TV, lighting, electric fan, charger, air ...