Sustainable Energy Group Inc. is a Grass Valley, California-based solar contractor established in 2004. The company specializes in comprehensive energy efficiency, solar, and backup power services for residential and commercial buildings. SEG is a multi-licensed contractor with a team of experienced professionals, offering services including residential solar, commercial solar, non-profit solar, off-grid solar, generators, battery backup systems, and roofing with solar integration. The company prides itself on excellent customer service and offers a 25-year parts and labor warranty. SEG aims to maximize value in performance and return on investment while maintaining quality craftsmanship and state-of-the-art technology. The company’s vision is to empower communities to build a more sustainable world, and its mission is to help people realize sustainability through renewable energy and energy efficiency.