Background Chedraui is one of the top supermarket chains in México, with additional stores in the United States, employing over 35,000 people. They operate over 217 locations, 150 of which are over 7,000 square meters. Project Chedraui wanted to reduce their building maintenance costs and save energy while improving in-store light quality. Specifically, increase the color rendering index (CRI) so products would appear more attractive to shoppers and result in increased sales.