Craig DiLouie

Lighting Columnist

Craig DiLouie is a journalist and educator specializing in the lighting industry. Learn more at and​

Articles by Craig DiLouie

January 2012
By now, the electrical industry is well aware that national energy standards have eliminated the manufacture and import of fluorescent magnetic ballasts for 4- and 8-foot standard and energy-saving T12 lamps, with few exceptions. On July 14, 2012, Department of Energy (DOE) rules regulating general-service fluorescent lamps will go into effect, eliminating many popular models. READ MORE
January 2012
Common household lamps (light bulbs) now carry uniform labeling to facilitate educated decisions focusing on light output and energy costs, not watts, helping consumers transition to more efficient lamp types. People typically purchase traditional incandescent lamps based on wattage. READ MORE
December 2011
Driven by commercial building energy codes, green building projects and owner demands for flexibility and lighting energy savings, lighting controls increasingly are being specified and specified systems are becoming increasingly sophisticated. As complexity increases, the benefits of stronger functionality increase; however, so do risks of poor design, installation and lack of user acceptance. READ MORE
December 2011
Energy codes, green building projects, user interest in flexibility and other market forces are driving demand for lighting solutions, including high-intensity discharge (HID) lighting systems, such as high-pressure sodium and metal halide. HID lamps may be dimmed using either step or continuous dimming. READ MORE
November 2011
Lighting designers have a responsibility to provide lighting systems that deliver visual comfort, which goes beyond simple visibility by addressing issues such as glare. READ MORE
October 2011
Lighting design begins with identifying the lighting needs for the space and then deciding what surfaces you want to light and at what intensities. Once you make these decisions, you can begin selecting equipment. A typical lighting system includes the light source; ballast or driver, if the source needs one; lighting fixture; and controls. The light source is at the heart of this system. READ MORE
October 2011
A high-quality lighting solution for office workers could be to use suspended direct/indirect lighting with fixtures mounted over workstations and a downlight component of the fixture that is individually dimmable by the user. Multiple research studies have linked these choices with comfort and satisfaction. READ MORE
September 2011
The Energy Independence and Security Act of 2007 created new efficiency standards for 40–100-watt (W) incandescent general-service lamps, along with an uproar. As of Jan. 1, 2012, 100W lamps must be 30 percent more efficient, or they will be prohibited from manufacture or import. Jan. 1, 2013 is the deadline for 75W lamps; and Jan. 1, 2014 targets 40 and 60W lamps. READ MORE
August 2011
Dimming offers greater flexibility for lighting systems, providing users with more control over their lighting conditions to support visual needs and enabling energy management strategies that can reduce energy costs. Traditionally limited to high-end commercial building applications, such as conference rooms and private offices, dimming is now being implemented throughout buildings. READ MORE