If the system is designed for 350w @ 350rpm and the rpm is about 7m/s, this means that we will get 350w @7m/s. For a particular area the wind speed annual average might be 7 m/s for 4000 hrs / yr. The calculation would then be 0.35 x 4000 = 1400kw / yr. But the area might also have wind of 3m/s for 1500 hrs /yr producing 100w , then the calc would be 0.1 x 1500 =150kw / y

Specification Explanation
Blade Physical Dimensions 0.8m x 0.8m 1.54 m² swept area
Generator Dimensions 340mm x 135mm
Weight 11 kgs
Generator Direct drive, mechanically integrated, weather sealed, permanent magnetic generator
Power Control Peak power tracking constantly optimizing turbine output for all sites and wind speeds
Power Projected peak power 0.5kw @ 300 rpm
Annual Energy Yield 1400 kwh
Operating wind speed Cut in at 2m/s, cut out n/a
Design Life 20 years
Rotor construction Stainless steel
Power regulation and control Regulation by controller
Roof mounting Depending on roof structure
Tower Mounting 4m or 7m ground mounted
Remote monitoring Remote monitoring operation
Warranty 5 years on generator and equipment as passed on by OEM