The Solar Energy Industries Association and the Large-scale Solar Association jointly filed a formal protest August 27 with the Interior Department, which established a final rule in July establishing 17 zones on 285,000 acres on federal land in six Western states where commercial solar development will be expedited. As the agency moves to finalize the Final Solar Energy Development Programmatic Environmental Impact Statement, the solar industry contends that the zones are too restrictive because they place limits on lands for solar development based on how much insolation they receive.