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It is still early in the collection and analysis of energy performance data, but it is already clear that high-performance commercial buildings—some "almost net-zero buildings"—can be constructed cost effectively, providing productive environments for occupants, reducing operating costs, and enhancing the competitiveness of commercial properties.

This report considers the major potential for lighting-related energy savings for all major exterior areas, including parking lots, streets and roadways, and building-mounted lighting. Discussion covers safety and security challenges that could hinder maximum energy savings. The report discusses the need for good design features—including appropriate lighting levels—that support safety and security elements, such as visual identification capability and effective lighting for security cameras. Lighting issues related to litigation concerns also are part of this reports.