The graph below compares the output of the wind turbines in our database with a maximum power output between 1.5kW and 3kW. This size class of turbines are used in grid-connected, and battery charging situations, with some people arguing that the cost of the grid-connection inverter and other equipment doesn't make sense for the smaller models, especially in low wind sites

The Raum 3.5kW looks like it is leading the field in this size group, although it doesn't have the lowest start-up wind speed according to this data.

Click links below to find out more about each turbine.
Whisper 500 Proven 7 Skystream 3.7 Westwind 3kW Turby Antaris 1.7 Raum 3.5 ReDriven 3kW Gusto 2kW V3.5  Honeywell Wind Turbine Mypower Hy 2kW TSW 2200 Simply Antaris 3.5 P-3000  

The data shown here is drawn from the power curves as published by the respective manufacturers. Some of these are calculated in different ways. When the MCS standards, are launched (hopefully soon) we will have a fairer way of comparing the power curves of wind turbines. The outputs shown towards the right of the graph represent what you would get in gale force wind speeds, so look towards the left to get an idea of the instantaneous power outputs you might get at your site. This graph can't be used to predict actual annual outputs, since many other local factors will affect the performance of a turbine. Reliability and installed cost should be a major consideration.

To find out more about assessing the potential of your site for wind turbines and working out what you could actually generate, check out our Power Predictor device.