What’s the number one energy source used to create electricity in the United States? If you answered “coal” you would have been right—up until very recently. Natural gas’ use to generate electricity has now tied coal—something that hasn’t happened in at least 40 years.
And with strict new federal EPA rules in place, there’s virtually no chance new electric generating plants powered by coal will be built. To build a new coal-fired plant compliant with emissions levels by the EPA would be too expensive to make it profitable.