This case study outlines the engagement of a multinational retailer with Carrier Abound over a five-year period aimed at improving energy efficiency and reducing costs. The retailer, operating over 1,200 stores, sought to decrease overall energy consumption by 20% by 2020 while enhancing the in-store experience for customers and reducing maintenance efforts. Carrier Abound implemented a comprehensive solution based on its 3 Waves Approach, which included immediate changes in store controls, integration of an analytics platform, and long-range analytics to maximize savings. Throughout the engagement, the retailer realized USD 71 million in energy savings and achieved a 13% average annual energy savings compared to the baseline year. The study details the proactive service management enabled by the Abound™ Insights platform, the establishment of Carrier Customer Command Centers, and the standardization of policies for store associates. The retailer not only met but exceeded its sustainability goals, demonstrating significant improvements in energy efficiency and service levels.