While natural gas and coal continued to lead U.S. electricity generation, both declined in 2017. This marks the first time since 2008 that generation from both of these fossil fuels dropped in the same year.
At the same time, renewables – especially hydropower, wind, and solar – continued to rise according to new data from the U.S. Energy Information Administration (EIA).
https://blogs.scientificamerican.com/plugged-in/u-s-electricity-natural-gas-and-coal-fall-as-renewables-continue-to-rise/
From the link,
Year Nat. Gas. Solar Renewable Sources Excluding Hydroelectric and Solar (~Wind)
2008 882,981.. 864.. 125,237
2009 920,979.. 891.. 143,388
2010 987,697.. 1,212 165,961
2011 1,013,689 1,818 192,163
2012 1,225,894 4,327 214,006
2013 1,124,836 9,036 244,472
2014 1,126,609 17,691 261,522
2015 1,333,482 24,893 270,268
2016 1,378,307 36,054 305,579
2017 1,272,864 52,958 334,287