The U.S. added 15 percent less wind power last year than in 2016 as developers paused for breath, safe in the knowledge that a federal tax credit doesn’t run out until 2020.
New installations reached 7 gigawatts in 2017, down from 8.2 gigawatts the prior year, the American Wind Energy Association said in a report Tuesday. The projects represent $11 billion in private investment. Wind farms under construction or in advanced development total 28.7 gigawatts, a 34 percent increase compared with 2016.