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The nation’s top building energy codes and standards reflect the importance of using lighting controls to conserve energy. In the ANSI/ASHRAE/IES Standard 90.1 – 2010, for example, there are mandatory requirements for area controls, automatic lighting shutoff, bi-level lighting, daylight harvesting, exterior lighting control, parking garage lighting control, and stairwell lighting control . Additionally, the designer must ensure that all lighting controls are functionally tested .On October 19, 2011, the DOE issued a ruling that requires all states to certify that they have updated the provisions of their commercial building code regarding energy efficiency to meet or exceed ASHRAE 90.1-2010 by Oct. 18, 2013. It’s expected that these lighting control requirements will be in place for most states for all new construction and major renovations of commercial buildings.