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DOE Adds Two Optional Metrics: Warranty, Lumen Maintenance to Lighting Facts Label

The label displays verified LM-79 product data including five parameters: light output in lumens, efficacy in lm/W, power required in W, correlated color temperature in K, and color rendering index. Now manufacturers can provide two additional metrics: an indication of warranty (yes/no) and lumen maintenance estimates based on LM-80 and TM-21 projections. It is important to differentiate the DOE Lighting Facts label from the FTC Lighting Facts label. The latter has been required on all medium screw-based bulbs sold to consumers since January 1, 2012. That label lists light output (lm), required power (W), appearance (CCT), presence of mercury, a lifetime estimate in years (based on 3 hours of usage per day) and energy cost ($/yr based on 3 hr/day, $.11/kWh). LEDs Magazine 11 Apr 2012