Power: 300W Rotor diameter: 2.2m Blades quantity: 3 pcs Blades material: FRP (composite material) Rated speed: 400r/min Rated output power: 300W Max output power: 450W Output voltage: DC24V/AC220V Start wind speed:3m/s Rated wind speed:8m/s Working wind speed: 3-25m/s Security wind speed: 40m/s Annual average energy production: 750kWh Tower height:6m (optional) Weight:20kgs (without tower) CAN SUPPLY POWER FOR: Lighting, electric fan and charger