40 articles Energy Efficiency

LED Fixture Efficacy vs Quality of Light: Recent Study Provides Insights

For several years, the mantra around LED lighting has been the significant rated life and efficacy (lumens/watt) advantage it has over most other light sources. Longer life means fewer bulb changes which translates into reduced maintenance costs for facilities. Better efficacy means lower energy costs. Both of these advantages are quantifiable and allow a straightforward…

DesignLights Consortium (DLC) Qualified Product List Benefits Buyers and Utility Incentive Programs

  Since 2010, the DesignLights Consortium (DLC) has been qualifying commercial sector LED lighting products and publishing a list – the Qualified Products List (QPL) – that meet specific performance requirements. These key performance metrics, updated to keep pace with both the evolution of LED technology and the needs of utility and industry stakeholders, are…

LED Troffers Offer Strong Case To Replace Fluorescent

Fluorescent troffers in North America account for nearly 50% of all fixtures installed in commercial buildings such as office, retail, education and medical facilities. Troffers normally are installed in T-bar grid drop ceilings with the 2 ft. x 4 ft. configuration being the most common. In 2018, LED troffer fixtures and troffer retrofit kits deliver…

New T8 Fluorescent Lamp Regulations Take Effect January 2018

The Energy Policy Act of 1992 gave the U.S. Department of Energy (DOE) authority to establish energy efficiency rules governing general service fluorescent lighting. In 2012, the DOE standards effectively eliminated most T12 fluorescent lamps and 700 series, low color rendering (CRI below 80) T8 lamps. The DOE rule-making affected the manufacturers initially – distributors…

Efficacy Improvement of LED Recessed Downlight Modules Slows But Benefits Remain

Updated: May 2018.   Recessed downlights are one of the most common light fixtures found in both commercial and residential applications. In individual offices, entry lobbies, reception areas, hallways, restaurants, retail merchandising, residential kitchens, family rooms and many other spaces, the clean, ceiling integrated look of recessed downlights makes it a fixture of choice. Traditionally,…

2017 Test Results: LED High / Low Bay Fixtures Match or Exceed HID / Fluorescent Photometrics

LED High / Low Bay Fixtures

Warehouses, big box retail and industrial facilities generally utilize high and low bay fixtures for general ambient illumination. The light sources for these fixtures traditionally have been high wattage metal halide and high output linear fluorescent lamps. While these light sources can have a high rated life – up to 40,000 hours, they also require…

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