Currently, two government agencies as well as many electric utility companies are actively promoting hard-wired, energy-efficient residential luminaires in the U.S. A major concern regarding these promotions is the lack of performance data on the promoted luminaires. As a start to solving this problem, the author evaluated 42 energy-efficient products from 15 residential luminaire manufacturers. Standard photometric tesitng was completed and its resutls used in three computer-simulated home spaces. Correlation and regression analyses were also conducted. Results show that 1) among total lamp power, luminaire fficiency, system efficacy and LER (luminaire efficacy rating), LER was the best indicator of actual luminaire performance; 2) though all the evaluated products provided energy savings, there were significant performance differences between them which indicate that making right product selections would be very difficult with the limited information currently available for these products; and 3) power quality measurements of the evaluated products showed three distinct types.
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