What LLLC is, and what independent researchers, universities and the trade press have found about its savings and cost.
In a luminaire level lighting control (LLLC) system, every fixture has its own occupancy sensor, daylight sensor and controller, and the fixtures talk to each other over a wireless network. Each fixture responds to what is happening directly beneath it instead of waiting on a room-level sensor.
Because the controls ship inside the luminaire, there is no separate control wiring to run, and zones can be regrouped in software when a space changes.
See fixtures with built-in controlStudies and articles from sources outside Energio. Links open on the publisher’s site.
Northwest Energy Efficiency Alliance & DesignLights Consortium
Analyzes energy-monitoring data from 194 buildings across North America to compare networked lighting systems with and without sensors in every fixture.
Read on Northwest Energy Efficiency Alliance & DesignLights ConsortiumPacific Northwest National Laboratory (U.S. DOE)
Follows an LLLC installation in NEEA’s Portland office from wiring through programming, and shows how commissioning choices such as occupancy timeouts and daylight grouping shape real-world savings.
Read on Pacific Northwest National LaboratoryBetterBricks (NEEA)
Owner and installer guides, technical guides and case studies for schools, hospitals and warehouses, plus pointers to utility incentives.
Read on BetterBricksUniversity of Washington, College of Built Environments
Research brief summarizing LLLC savings studies, including a Rensselaer Polytechnic Institute finding of about 43% savings over manual controls, and the benefits of occupant task tuning.
Read on University of WashingtonMontana State University, Integrated Design Lab
Video series, learning guides and infographics on applying LLLC in hospitals, offices and schools.
Read on Montana State UniversityElectrical Contractor Magazine
Covers a University of Oregon study for NEEA in which LLLC matched the savings of a full networked-controls redesign at roughly a third to half of the installed cost.
Read on Electrical Contractor MagazineLighting Controls Association
Reports 50–74% energy savings from luminaire-level options in NEEA’s side-by-side test, against 67% for a networked redesign.
Read on Lighting Controls AssociationEC&M
The per-fixture cost premium for basic LLLC fell 28% between 2017 and 2020.
Read on EC&MEC&M
A three-step approach for installers: agree on operations with the owner, learn the system before arriving on site, and walk the facility team through the settings at hand-off.
Read on EC&MArticles are published by their respective owners and reflect their own findings. Listing here does not imply endorsement of Energio products.