Windmills are horrible investments. They could spin for 100 years and never equate the energy it took to make them. This going green movement is nonesense for the most part. Just like reducing the "carbon footprint"... I don't know who coined that term but it's very silly. Carbon is an element and one of the most abundant on Earth. Carbon dioxide and carbon monoxide are molecules... not elements. Last time I checked trees breathe co2. We could do with a lot more of it.