The DOE’s Office of Energy Efficiency and Renewable Energy’s Technical Assistance for Manufacturers program helps companies identify and implement energy-saving projects and improve energy management programs and energy performance. Facilities pursue Superior Energy Performance® (SEP®) certification to validate robust use of the ISO 50001 standard and the significant, ongoing savings it enables. Detailed accounts by facilities that have certified their ISO 50001 achievements to SEP make a clear business case for rigorous use of an ISO 50001 energy management system (EnMS). These case studies provide an insider’s view on the associated challenges, strategies, energy savings, and other benefits, along with details about the potential cost savings of implementing ISO 50001 and SEP across multiple sites, using the enterprise-wide approach. Read the cost-benefit analysis, review the single-site and enterprise-wide case studies, and view engaging videos and presentations.