Whether you like it or not, coal power is on the decline... and that's having a marked impact on American energy output. The US Energy Information Administration has published data revealing that the country's 2016 energy production dropped over year-over-year -- the first such drop since 2009. Most of it can be pinned on coal, whose output fell a steep 18 percent compared to 2015. Other energy sources dipped as well, but not by nearly as much. Natural gas and crude oil were down 'just' 2 and 7 percent respectively.