Kohl’s partnered with the Department of Energy (DOE) to develop and implement solutions to retrofit existing buildings to reduce annual energy consumption by at least 30% versus requirements set by Energy Standard 90.1-2004 of the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE), the American National Standards Institute (ANSI), and the Illuminating Engineering Society of America (IESNA) as part of DOE’s Commercial Building Partnership (CBP) program. The National Renewable Energy Laboratory (NREL) provided technical expertise in support of this DOE program. Kohl’s retrofitted a 17 year-old, single-story 87,000 sq. ft store in Niles, Ohio. Kohl’s also designated the store as a DOE Better Buildings Challenge showcase store.