DOE shares the results of completed GATEWAY demonstration projects, publishing detailed reports that include analysis of data collected, projected energy savings, economic analyses, and user feedback. Report briefs summarize key findings in a quick-scan format. Both the reports and briefs are available as Adobe Acrobat PDFs.

Completed Indoor Projects


A nursing-care center hallway at night, with lighting dimmed to 20% output.

A study of tunable lighting at the ACC Care Center, a 99-bed nursing center in Sacramento, CA, with a large population of dementia patients. The objective was to test a strategy for measuring and documenting light exposure for typical nursing-center residents, and to evaluate the data in terms of various metrics for human circadian responses over the course of a day. (November 2019)

Measuring Light Exposure and its Effects on Sleep and Behavior in Care Center Residents


Photo of an elementary school classroom.

The GATEWAY program documented a trial installation of tunable-white LED lighting systems in three classrooms at an elementary school in Folsom Cordova Unified School District in Folsom, CA. The report focuses on illuminance, estimated energy use, and spectral power distribution and related human response metrics, and offers some important lessons learned. (September 2018 – Supplemental Report, April 2019)

Folsom Cordova Classroom Tunable Lighting Report

Tuning the Light in Classrooms

Four photos of a classroom with different tunable light settings.

The GATEWAY program evaluated a trial installation of tunable-white LED lighting systems in three classrooms in the Carrollton-Farmers Branch Independent School District in Carrollton, TX. The report provides valuable insights into the use of this technology in a real-world setting. (September 2017)

Classroom Tunable Lighting Report

Classroom Tunable Lighting Report Brief

the side by side image of two lobbys. one with, one without SSL.

The GATEWAY program evaluated a tunable LED lighting system installed in the new Swedish Medical Behavioral Health Unit in Seattle that incorporates color-tunable luminaires in common areas, and uses advanced controls for dimming and color tuning, with the goal of providing a better environment for staff and patients. The report reviews the design of the tunable lighting system, summarizes two sets of measurements, and discusses the circadian, energy, and commissioning implications as well as lessons learned from the project. (August 2017)

Swedish Medical Behavioral Health Unit Report 

Swedish Medical Behavioral Health Unit Report Brief

DKB-OLED_thumb image

At the offices of the accounting firm of DeJoy, Knauf & Blood, LLP in Rochester, NY, the GATEWAY program evaluated a new lighting system that incorporates a number of different OLED luminaires. Evaluation of the OLED products included efficacy performance, field measurements of panel color, flicker measurements, and staff feedback. (July 2017)


DKB OLED Report Brief

See other DOE OLED Studies

Long-Term Evaluation of SSL Field Performance in Select Interior Projects

The GATEWAY program evaluated the long-term performance characteristics (chromaticity change, maintained illuminance, and operations and maintenance) of LED lighting systems in four field installations previously documented in separate DOE GATEWAY reports. (February 2017)

Long-Term Evaluation Report

Long-Term Evaluation Report Brief

Tuning the Light in Senior Care

The GATEWAY program documented the performance of tunable-white LED lighting systems installed in several spaces within the ACC Care Center, a senior-care facility in Sacramento, CA. The project results included energy savings and improved lighting quality, as well as other possible health-related benefits that may have been attributable, at least in part, to the lighting changes. (August 2016)

ACC Care Center Report

ACC Care Center Report Brief

ACC Care Center Video

OLED Lighting in the Offices of Aurora Lighting Design, Inc.

At the offices of Aurora Lighting Design, Inc., in Grayslake, IL, the GATEWAY program conducted its first investigation involving OLED lighting. The project experienced several challenges, but also highlighted a number of promising attributes – which indicate that with continued improvements in efficacy, longevity, size, and flexibility, OLEDs could provide a new tool for creative and effective lighting. (March 2016)

Aurora OLED Report

Aurora OLED Report Brief

See other DOE OLED Studies

LED Retrofit Project: Princeton, New Jersey

At Princeton University’s Carl Icahn Laboratory, DOE’s Commercial Buildings Integration Program documented the implementation of LED retrofit products for recessed troffers, linear cove lighting, and downlights – as part of Princeton’s first building-wide interior LED project. The conversion to LED enables more extensive use of lighting controls to tailor the lighting to the task and limit the operating hours based on occupancy, and the estimated energy savings including controls is 62% compared to the incumbent system. (November 2015)

Princeton Icahn Laboratory Report

LED Wall Washer Retrofit: College Park, Maryland

At the University of Maryland, the GATEWAY program looked at LED wall washer options for a demonstration at the Clarice Smith Performing Arts Center. Two products were initially mocked up and evaluated – a complete LED wall washer and a retrofit with an LED module. The LED modules eventually replaced 87 halogen lamps in existing wall washers, resulting in a significant reduction of maintenance and energy costs while retaining the quality of light. (July 2015)

University of Maryland Report

University of Maryland Report Brief

LED Downlight Replacement Lamps: Gig Harbor, Washington

At St. Anthony Hospital, DOE's Better Buildings Alliance conducted a demonstration of LED replacement lamps installed in existing CFL downlight sockets throughout the facility. The retrofit resulted in substantial energy savings, along with improvements in lighting color quality and the expectation of improved long-term lighting system performance leading to reduced ongoing maintenance costs. (May 2015)

St. Anthony Hospital Report