More than 20 years after passing a landmark clean energy law, the state gets more of its power from burning coal waste than from solar.By Kyle BagenstoseWINDBER, Pa.—Standing on the rocky banks of Paint Creek in western Pennsylvania, Jim Panaro pointed out the colors of contamination. The orange staining the boulders is from iron, he explained, and the milky-white pools stagnating at the surface are aluminum. Likely lurking beneath the surface are other metals—copper, cadmium, arsenic—toxic to both aquatic life and humans.