Supply two types: Grid-tie and grid-off type. And A set 2kw wind turbine contains: Gnerator +Blade +Tail+Hub+ Controller + Inverter (grid-off) + Tower + Cable +Accessories. Product got CE,ISO, CCC Certificates Detail specification as followes: Numbers of blade(P): 3 Materials of blade: FRP strengthened Diameter of wind turbines(m):3.2 Startup wind speed :3 Rated wind speed(m/s): 9 Working wind speed (m/s): 3-25 Max. wind speed(m/s): 45 Rated speed(rotate/minute): 450 Start torque (n/m):2 Wind energy ratio(%):0.41 Generator rated power(W): 2000 Max.output power(W): 3000 Output voltage(V): 48VDC(Off-grid type) /300VDC(On-grid type) Generator: Permanent-magnetic ,3-phase,AC Speed regulation : Electromagnetic brake + Yawing Stop method: Electromagnetic brake Tower type: Guy wire type / Free stand tower Tower height (m): 6 / 7 Weight exclude tower(kg): 90 Annual generatoion Min/Max(kwh): 2000 / 6000 Inverter power supply: Pure Sine Wave( On-grid &Off-grid ) Controller Model : 48V100A / 300v100A Battery: 12v200AH X4pcs (Off-grid type )