Swept area

The Westwind 3kW has a blade diameter of 3.70 metres. This means it has a swept area, or capture area of 10.75 square metres. The swept area is all important when comparing wind turbines, since it directly relates to the amount of passing wind energy the turbine blades can intercept.

Westwind 3kW power output curve

The graph below shows the power produced (in watts) for the Westwind 3kW at different wind speeds, based on data supplied by the manufacturer.

Whilst the above graph gives an indication of the instantaneous power you might expect from the Westwind 3kW turbine, working out annual power production is more complex. The only way to know for sure is by measuring your wind speeds using an anemometer for a period of time and then working out what a generator like this would produce. Luckily, we've invented something that makes this easy, called the Power Predictor!

The available output information for the Westwind series is limited to 17m/s so to produce a more complete graph we have extrapolated the last few values.

3.70 metres

2560

No

48 Volt • 120 Volt

Westwind