The U.S. Department of Energy’s CALiPER program has released a new Snapshot Report on LED troffer luminaires. Among the key findings of the Snapshot, which is based on DOE’s LED Lighting Facts database:
- The efficacy of LED troffers is notably higher than what’s typical of fluorescent troffers. About 10 percent of the listed products had a luminous efficacy greater than 125 lumens per watt—substantially higher than the efficacy of fluorescent-based troffers, which top out at under 100 lpw.
- Color and power quality for troffers were very similar to that of fluorescent troffers.
- The LED troffers had a variety of CCTs, but almost all of them had a CRI in the 80s.
Much has changed since April 2014, the last CALiPER Snapshot report that included troffers. Back then, the mean efficacy for troffers was 90 lpw; today it’s 102 lpw. In terms of the data captured by LED Lighting Facts and reported in the new Snapshot, LED troffers offer a compelling alternative to fluorescent troffers. This applies to both troffer luminaires and troffer retrofit kits, whose performance was nearly indistinguishable. While the new report focuses on basic photometric characteristics, choosing a product for a specific installation requires a more comprehensive analysis.
For a closer look at the findings, download the full report.