Vertical Axis Wind Turbine
Helical Blade NV-5K   5kW

The NV-5K specifically designed to comfortably power an average home when the average wind speed is just over 10 mph ( 16 kmph )

Specifications

Performance:

Rated Power 5000 W
Rated Wind Speed 12m/s
Operating Range 3 - 25 m/s
Maximum Wind Speed 50 m/s
Noise Level at 3 meter distance:
< 7 m/s        27 dB
7 - 10 m/s    32dB 
10 -13 m/s    37dB

Generator:

Permanent magnet direct drive generator
Temperature range -40C to 115C

Wind Interface unit:
Power-One Aurora PVI-7200
Output 0-600 V dc

Grid-Tie inverter:
Power-One Aurora PVI-6000
Input 50 - 580 V dc

Physical Parameters:

Mill Size 6.2m x 3.15m
Tower Height 5.5 m - 11m
Turbine Gross Weight 200 kg
5.5m Tower Weight   150 kg
11m Tower Weight    300 kg  

    
Image courtesy of British Wind Energy Association