Always-On Generation Is at Risk

Energy diversity is taken for granted and—if current trends continue—that diversity is seriously at risk.
Recent trends point to a return to a less diverse electric generating mix dominated by natural gas, and with a growing contribution from wind and solar energy. America’s most reliable ‘always-on’ generation is at risk.
http://www.nei.org/Why-Nuclear-Energy/Value-of-Electricity-Diversity/Always-On-Generation-Is-at-Risk