Of all the zero-carbon energy sources available, wind power is the only one that’s truly cost-competitive today: A 2006 report by the U.S. Energy Information Administration put the total cost for wind-produced electricity at an average of $55.80 per megawatt-hour, compared to $53.10 for coal, $52.50 for natural gas and $59.30 for nuclear power. As […] … learn more→