US lawmakers in Congress have introduced bills for a five-year extension of the 30% solar investment tax credit (ITC) and one more year of the wind production tax credit (PTC) at the present 40% through 2020, although both face a difficult climb for passage.

The ITC extension drafted in companion bills in the House of Representatives and Senate are bipartisan and have support of the Solar Energy Industries Association (SEIA), the industry’s leading national trade association, and some project developers and supply chain officials.