The graph below compares the outputs of wind turbines in our database that have a max rated output of between 150 and 450W. These are the small generators you'll see on yachts or caravans, or sometimes attached to lamp posts and speed cameras at the side of the road. They are designed for trickle-charging a bank of batteries.
The Samrey Mistray seems the clear winner in this category. Despite its higher maximum output it is included here because it has a rated output of 300W. The Navitron 200W and 300W are also good performers, with low kick in speeds (2m/s) and power curves which outperform the Mistral in lower wind speeds (2-8m/s). 
Click links below to find out more about each turbine.
D400 Air X Samrey Wren Navitron 300W Navitron 200W Samrey Mistral Aerogen 6 Superwind 350 Windside4 ComSpin S2 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. The outputs towards the right of the graph represent gale force wind speeds, so the importance lies with the outputs around the much lower windspeeds you are likely typically experience at your potential site. This graph can't be used to predict actual annual outputs, since many other local factors will affect the performance of a turbine.
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