If you live in an area with extreme weather, you may be concerned about the turbine standing up to strong winds. The turbine has been tested to operate in wind gusts up to 90mph, and it is made primarily from UV-resistant nylon and anodized aluminum in order to withstand the elements. Kevin told me about how they have tested the turbines in wind tunnels and also outside in a Wisconsin winter, which can drop many feet of snow. He also explained how there is a sensing control, called the Smart Box, inside the turbine that turns on a braking system when the blades are going too fast. The 6ft diameter unit can be mounted to a pole, or directly to the roof by a professional installer. The total weight is only 170lbs, so it should not pose structural concerns.