Taking account of externalities, wind power is the [ cheapest form of generation in Europe ]( http://www.theguardian.com/environment/2014/oct/13/wind-power-is-cheapest-energy-unpublished-eu-analysis-finds ) . Coal costs more than double.
Ссылка: https://stallman.org/archives/2014-jul-oct.html#14_October_2014_%28Wind_power_in_Europe%29