The industry scored a tremendous policy victory with the late-2015 extension of the PTC, but many observers are anxious about the elections, which cover the White House, all 435 seats in the House of Representatives and about a third of the 100-seat Senate.

When the next Congress takes office in January 2017, it could choose to rewrite the laws governing the PTC, concedes Peter Kelley, the American Wind Energy Association's (AWEA) vice-president for public affairs.

Such