Supply two types: grid-tie and grid-off type. And A set wind turbine contains : Gnerator+Controller +Inverter(grid-tie or grid-off)+Tower+ Bland+Dogvane+(Anemoscope) Type: 3 Blade Upwind R otor Diameter: 12.0 m Start-up Wind Speed: 2.5 m/s (5.6 mph) Cut-in Wind Speed: 3 m/s (6.7mph) Rated Wind Speed: 12m/s (26.8mph) Rated Power: 20k Watts Maximum Power: ~ 25k Watts Cut-Out Wind Speed: 15m/s(33.5mph) Timing manner: Automatically adjust the windward angle Overspeed Protection: AutoFurl Temperature Range: -40 to +60 Deg. C Generator: Permanent Magnet Alternator Output Form: 360VDC Nominal Battery: 12V200AH X80pcs