See: http://www.renewableenergyworld.com/rea/news/article/2015/04/renewables-account-for-75-percent-of-new-us-generating-capacity-in-first-quarter-of-2015
This is impressive. Solar is now above 1% for the first time. Wind is 5.7%. The capacity factor is closer to the nameplate capacity than I thought. Quote: "Renewable energy sources now account for 16.92 percent of total installed operating generating capacity . . . Note that generating capacity is not the same as actual generation. Generation per MW of capacity (i.e., capacity factor) for renewables is often lower than that for fossil fuels and nuclear power. According to the most recent data (i.e., as of December 2014) provided by the U.S. Energy Information Administration, actual net electrical generation from renewable energy sources now totals 13.2 percent of total U.S. electrical production; however, this figure almost certainly understates renewables' actual contribution significantly because EIA does not fully account for all electricity generated by distributed renewable energy sources (e.g., rooftop solar)." - Jed
