GATEWAY conducts field evaluations of high-performance SSL products to collect empirical data and document experience with field installations. Real-world installations often reveal product limitations and application issues that are not apparent from laboratory testing.
DOE shares the results of completed GATEWAY evaluations, publishing detailed reports and briefs on completed projects. GATEWAY typically documents pre- and post-installation light levels, color characteristics, energy use, and other performance attributes, and addresses application and maintenance of SSL products. In some cases, GATEWAY returns to projects after months or years of operation to take additional site measurements or remove luminaires and send to accredited laboratories for testing. While not possible for every project, such follow-up measurements have yielded useful data on dirt depreciation, color shift, luminous intensity distribution changes, and lumen depreciation over time.
As the SSL market has matured, GATEWAY has transitioned its evaluations to focus on emerging characteristics and applications of SSL systems, such as OLED-based luminaires and color-tunable products, as well as long-term product performance. GATEWAY findings identify technology challenges and spur continued advances in SSL technology, product design, and application. They also provide independent, third-party data for use in decision making by lighting manufacturers, users, and other professionals.
- Measuring Light Exposure and its Effects on Sleep and Behavior in Care Center Residents (November 2019)
- Evaluating Tunable Lighting in Classrooms: Trial LED Lighting Systems in Three Classrooms in the Folsom Cordova Unified School District (September 2018 – Supplemental Report, April 2019)
- LED Area Lighting Retrofit: Yuma Border Patrol (April 2018)
- Tuning the Light in Classrooms: Evaluating Trial LED Lighting Systems in Three Classrooms at the Carrollton-Farmers Branch Independent School District in Carrollton, TX (September 2017)
- Tuning Hospital Lighting: Evaluating Tunable LED Lighting at the Swedish Hospital Behavioral Health Unit in Seattle (August 2017)
- OLED Lighting in the Offices of Dejoy, Knauf & Blood LLP (July 2017)