![Coal's share of U.S. electricity generation, 1949-2015 [U.S. Energy Information Administration data]](http://images.hgmsites.net/tmb/coals-share-of-u-s-electricity-generation-1949-2015-u-s-energy-information-administration-data_100585464_t.gif)
The coal industry is on the decline, but the reason for that decline has become a subject of political debate. Supporters of fossil fuels blame the energy policies of the outgoing Obama Administration, claiming the emphasis on renewable energy and lowering carbon emissions puts coal at a disadvantage. President-elect Donald Trump has promised to...