There’s no denying that natural gas is revolutionizing our energy economy, but few believed it could deal such a swift death blow to coal, the commodity that brought us into the Industrial Revolution and has been our backbone ever since. But the signs are irrefutable. Here’s what you need to know. A historic battle Coal and natural gas have been going at it for a while. Traditionally, these were actually complementary energy sources. As a cheaper fuel that was more difficult to manage, coal-fired generation plants were the “slow burners” that kept our energy capacity steady throughout the day. Relatively expensive and more malleable natural gas-fired power plants served as the “pinch hitters” that powered up during peak hours when we needed that extra bit of juice. Today, things look a bit different. Natural gas and coal are no longer complements: natural gas has become a substitute for coal. […]