DOE Publishes GATEWAY Report on Long-Term Evaluation of LED Indoor Field Performance

To better understand the obstacles to manufacturing, specifying, procuring, and installing LED lighting products, the U.S. Department of Energy's GATEWAY program has released a report evaluating the long-term performance characteristics (chromaticity change, maintained illuminance, and operations and maintenance) of LED lighting systems in four field installations, each of which was previously documented in its own DOE report:

The four evaluations illustrate that SSL use is often motivated by advantages other than energy savings --  including maintenance savings, easier integration with control systems, and improved lighting quality.
 
They demonstrate that the success of any lighting implementation can't be determined only by a simple review of technical performance data, but instead depends on full consideration of the individual project goals and priorities.
 
For a closer look at the findings, download the full report.
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