File:U.S. electric generation shares (2005-15) (27263493835).png

Other changes in the electric generating mix have also worked to reduce CO2 emissions. Renewable energy sources are gaining an increasing share of generation, driven primarily by increases in wind and solar capacity. Nuclear generation was relatively flat over the past decade but remains the single largest source of generation without CO2 emissions. Together, renewables and nuclear provided about 33% of overall U.S. electricity production in 2015, the highest share on record. <a href="http://www.eia.gov/todayinenergy/detail.cfm?id=26232" rel="nofollow">www.eia.gov/todayinenergy/detail.cfm?id=26232</a>