Are weather stations and radars affected by wind turbines?
There is no radar system in the world today that is not affected in some manner by line of sight incursions. Signal interference can be caused by any number of factors from placing an object in the line of sight of a radar system (such as environmental elements, natural topographic features and common structures associated with built up areas).
There are policies, tools and mechanisms that allow wind developers, radar operators and the aeronautical industry to predict and mitigate the potential impacts a project may have on radar and aeronautical systems. With such policies and tools in place, it is highly unlikely that a wind turbine or wind energy development will ever compromise commercial/military flight safety, national security, or weather tracking capabilities.
The wind industry continuously works collaboratively with the radar industry, regulators and radar operators to grow our understanding of mitigation techniques and potential interference issues. CanWEA actively follows this issue and has worked with the Radio Advisory Board of Canada (RABC) to publish the RABC/CanWEA Guidelines in 2007, and updated in 2010.
(Question answered May 2013)