Craig DiLouie

Lighting Columnist

Craig DiLouie, a lighting industry journalist, analyst and marketing consultant, is principal of ZING Communications. He can be reached at www.zinginc.com.

Articles by Craig DiLouie

February 2014
In late 2012, the California Energy Commission (CEC) published a voluntary specification recognizing quality light-emitting diode (LED) lamps intended to replace screwbase incandescent lamps in luminaires. Called the Quality LED Lamp Specification (QLS), it covers a range of omnidirectional and directional (spot and flood) lamps.
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January 2014
On Jan. 1, 2014, the next phase of incandescent lamp regulations in the Energy Independence and Security Act of 2007 went into effect. This phase prohibits the manufacture and import of 40–60-watt (W) incandescent, general-service lamps that do not meet certain energy-efficiency criteria. The result is elimination. READ MORE
December 2013
As the LED revolution continues to proliferate with new lighting solutions that compete with conventional lighting, some novel technologies haven’t gotten as much attention. For example, the organic LED (OLED) is emerging as a potential area light source, while light-emitting plasma continues to develop for high-intensity applications.
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November 2013
daylight harvesting control systems have become a common feature in green buildings, and with ASHRAE/IES 90.1 2010 now the baseline energy design standard, it also is expected to become a staple in mainstream construction. 
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October 2013
ASHRAE/IES 90.1, Energy Standard for Buildings Except Low-Rise Residential Buildings, was developed as a model commercial building energy code that jurisdictions can adopt in whole or in part. It is updated every three years; as of the time of writing, the 2013 version was expected to be published this month.
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September 2013
The average commercial building electric bill often features a consumption and demand component. The consumption component reflects the amount of electric energy (kilowatt-hours) used, and the demand component shows the maximum demand (kilowatts) during the billing period.
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September 2013
Estimating lighting control energy savings is challenging, as actual savings depend on application characteristics, such as occupant behavior, building design, site orientation, daylight apertures, interior reflectances, device settings and level of commissioning. But what about measuring savings after responsive lighting is installed?
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  • Acuity Brands' Aera recessed luminaires have three control functions to manage the white ambient light independently.
September 2013
While light makes sight, lighting shapes perception, particularly in regard to color in the things we see. This is because visible white light is made of colors. For us to see an object as a certain color, that color must be present in both the light and the object.
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August 2013
Retailers are considering upgrading to directional light-emitting diode (LED) replacement lamps; however, lacking relevant education, they are making these decisions primarily based on initial cost and payback, according to a survey of retailers conducted by Pacific Gas & Electric and the California Lighting Technology Center (CLTC).
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