Saint-Gobain, the world's largest building materials company, has its North American headquarters in Valley Forge, Pennsylvania. As the world leader in sustainable habitat, Saint-Gobain is committed to inventing solutions to help professionals and communities around the world build and renovate comfortable, healthy, economical, and energy-efficient buildings. The company has more than 265 locations in North America and approximately 19,000 employees. In the United States and Canada, Saint-Gobain reported sales of approximately $7.9 billion in 2012. Saint-Gobain's family of companies in North America includes CertainTeed Corporation, which offers the most comprehensive portfolio of interior and exterior building products in North America, as well as Saint-Gobain Abrasives, Saint-Gobain ADFORS, Vetrotech Saint-Gobain North America, Saint-Gobain Glass, Saint-Gobain Solar, Saint-Gobain Performance Plastics, Verallia North America, and more. Recognized as a 2009 and 2010 ENERGY STAR Partner of the Year by the U.S. Environmental Protection Agency, Saint-Gobain earned the 2011, 2012 and 2013 ENERGY STAR Sustained Excellence Award, the highest level of recognition for outstanding contributions to protecting the environment through energy efficiency.