This Lighting Energy Management procedure is excerpted in its entirety directly from ASHRAE/IESNA Standard 90.1-2004 for the convenience of those whose interest is only in this aspect of the complete document. It contains General Information -the scope, applicability and exceptions to lighting portion of Standard 90.1; Prescriptive Requirements -determining the interior power allowance for a building using a building area method or space-by-space method; Mandatory Provisions -lighting control, space control, exterior building grounds lighting; and compliance paths.