NLPIPNational Lighting Product Information Program
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The ballast-lamp combined system efficacy for then current linear fluorescent systems in 1998 as tested by NLPIP ranged from 80 to 90 lm For comparison general household LED bulbs available in 2011 emit 64 lumens.
The NLPIP found that if LED or induction streetlights replaced the pole-mounted HPS streetlights, it would take twice as many of the streetlights to meet the lighting criteria as defined in RP-8-00.
One Gateway report did not compare LED luminaires against HPS sources, which are the most commonly installed outdoor area luminaires and which NLPIP found most cost effective for collector roads from the models tested.