Lighting Controls Multi residential Building Hallway Case Study

Monitoring and Verification of Savings Achieved by LED Lighting Controls


Lighting Controls are one of the newest technologies to show promising results for energy savings and cost effectiveness. Motion sensors, photocells, and real time dimming controls can now be combined into a single fixture, that allows for cost-effective installation, eliminating any additional costs associated with exterior mounted sensors, incompatibility issues, as well as granting more user control over immediate energy savings. These maximized savings (18w LED with controls showed an avg. of 85% savings vs. 26w CFL) found in controlled LED fixtures also allows for the extended life of the fixture itself, providing a longer-term plan for reducing energy consumption.


A lighting control upgrade used to be a second step in a lighting retrofit process. This was mainly due to now outdated fluorescent lighting systems not always having compatible components, or different manufacturers creating different components of the same system. By combining lighting controls at the manufacturing process, we have reduced the overall costs associated with a lighting upgrade that otherwise may have deterred individuals in the past. Below is a case study presenting our findings of energy savings obtained through monitoring and verification.


The graph below shows the results obtained in a Multi-residential building on a single floor, where new LED fixtures with motion sensors and real-time dimming controls were installed. Before the retrofit, the 11 existing fixtures had a 26W compact fluorescent lamp (CFLs) and were consuming 2670 kWh/year/floor. After the installation of the new LED system with motion sensors and real-time dimming, energy consumption was reduced to 395 kWh/year/floor, representing 85% less energy being consumed. The night periods on the graph show the expected dip in kw usage during this period, as the fixtures were dimmed to 10% (of total illumination or about 2w) only returning to full illumination with detection of motion, resulting in the opposite effect represented on the graph showing times of high traffic at expected hours.

After seeing the results of the study the only conclusion is that the installation of efficient LED lighting controls to replace regular incandescent, fluorescent and high intensity discharge (HID) lamps will result in substantial savings, and the use of control systems brings energy efficiency to the next level.

Contact us to learn more about dimming technology and lighting controls via phone, email, and as always, a Nexstar/Multilogic representative is always available to meet with you in person to discuss your interest in the energy savings we can provide.


About Nexstar & Multilogic:
Nexstar Lighting Ltd. and MultiLogic Energy Solutions Inc. work together in creating energy efficient lighting project for commercial, industrial and multi-residential clients. Our Engineering team has over thirty years of expertise with energy audits, studies, design, installation and monitoring and verification analysis.
We hold a Certificate of Authorization from Professional Engineers Ontario and our in-house Electrical Contractors are ECRA/ESA licensed.