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

October 2009
Bilevel switching, in which alternate rows, fixtures or lamps are separately circuited and independently controlled, has been demonstrated in one study to produce 22 percent energy savings in private offices. READ MORE
September 2009
The U.S. Department of Energy (DOE) predicts that solid-state lighting will achieve efficacies as high as 160 lumens per watt and provide most of our general lighting needs within the next 20 years, thereby reducing the nation’s energy costs by 6–7 percent. READ MORE
August 2009
Between 1984 and 2003, the percentage of people directly using a computer at work more than doubled to nearly 57 percent. The widespread adoption of computers not only changed office environments but also best practices in lighting and, by extension, office lighting technology. READ MORE
July 2009
In Turner Construction's 2008 Green Building Market Barometer survey of 754 commercial real estate executives, a significant percentage of respondents view green buildings as having lower operating costs and higher building values, rent requirements, occupancy rates and overall return on investment. According to the U.S. READ MORE
July 2009
The International Code Council (ICC) develops model codes regulating construction of residential and commercial buildings, one of which is the International Energy Conservation Code (IECC). Most states have a commercial or residential energy code that is based on some version of the IECC. READ MORE
June 2009
After the Energy Independence and Security Act became law in late 2007, threatening an end to 40–100 watt general-service incandescent lamps, a consumer backlash began building against compact fluorescent lamps (CFLs). READ MORE
May 2009
The stakes are high. According to U.S. Department of Energy (DOE) estimates, nearly 1 billion 60W A19 lamps will be installed in the United States by 2010. America is calling for a super-efficient lamp and has pinned its hopes on solid-state lighting. Are light-emitting diode (LED) screw-in replacement lamps ready to take on that venerable workhorse: the 60W incandescent A-lamp? READ MORE
April 2009
In recent years, ballast manufacturers have begun marketing a premium fluorescent ballast called a “high-efficiency ballast” for operation of 4-foot T8 lamps. A high-efficiency ballast provides the same level of light output as a standard electronic ballast but does it with 2-–5 fewer watts. For a cost adder of about 10-–20 percent, the ballast can add energy savings of up to 7 percent. READ MORE
April 2009
Energy management systems (EMS) provide automatic control of electrical loads—most commonly heating, ventilating and air conditioning (HVAC) systems and sometimes lighting. Building automation systems (BAS) include the energy management functionality of an EMS along with nonenergy-related loads, such as security and fire safety. READ MORE

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