Windmills use an enormous amount of copper. For example, a single wind turbine can contain 335 tons of steel, 4.7 tons of copper, 3 tons of aluminum and 700-plus pounds of rare earth minerals. ... In fact, wind and solar energy use more copper than conventional forms of energy, such as coal, natural gas, and nuclear power plants. Conventional power plants require about one ton of copper to produced one megawatt of electricity, whereas wind and solar can require between three to five tons per megawatt. ... Make no mistake, switching from reliable sources of electricity like coal, natural gas,...