MPW Engineering provided mechanical, electrical, plumbing and fire protection engineering for the Chicago Walmart HE store that has high system efficiencies and relatively low operating costs.
Through the use of skylights in the sales store and stockrooms, the fluorescent lighting energy consumption goes to zero percent when natural lighting is adequate. LED lighting is incorporated into the refrigerated case design to reduce energy costs through usage settings, lower wattage output and producing less heat than the mechanical process would have to remove.