Prologis is a global provider of distribution facilities, with more than 600 million square feet of industrial space in North America, Europe, and Asia. The Prologis Commercial Building Partnerships energy upgrade project improved lighting efficiency at an 800,000-square-foot unconditioned warehouse leased by retailer Sears in Olive Branch, a town in northern Mississippi. The lights, which are on 24 hours a day, 7 days a week, represented the best opportunity for energy savings.
The National Renewable Energy Laboratory's lighting research group used lighting power density calculations to determine that a lighting retrofit alone would result in more than 30% energy savings compared to existing use and more then 51% savings compared to ASHRAE Standard 90.1. Actual savings compared to pre-retrofit utility bill analysis were just over 41%.