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Free DOE Software Product for Lighting Plans

The Commercial Lighting Solutions provide actionable "how to" guidance on ways to improve your building interior lighting efficiency and reduce your energy consumption, without compromising quality design criteria. Strategies include the use of high performance commercially available products, daylighting, and lighting controls, all within the context of integrated designs supported by performance specifications.  It is a webbased lighting tool that DOE created last year to help facilities managers and others do accurate, quick calculations for energy-efficient lighting applications. The interactive program is a back-of-the-envelope boost that can save building owners 30 percent more energy than the baseline standard ASHRAE 90.1 without compromising the quality of illumination.

 http://www.lightingsolutions.energy.gov/