Energy Standards Take On Daylight Harvesting

Because of the strong energy savings potential offered by daylight harvesting, coupled with advancing technology, codes and standards are now beginning to address daylight harvesting—specifically, International Energy Conservation Code (IECC) 2009, ASHRAE/IES 90.1-2010, ASHRAE 189.1 and Title 24-2008.

All of these codes and standards are different and yet have similar major themes. First, they define daylight availability as zones around sidelighting (e.g., windows) and toplighting (e.g., skylights and roof monitors) daylight apertures. Second, they require separate control for general lighting in these daylight zones. The standard may also specify whether the control must be manual or automatic, switching or dimming, stepped switching or simple ON/OFF. And the standard may reward aggressive daylight harvesting with power adjustment credits that can be used to acquire greater design flexibility with the controlled load.

Click here to read this special report by Craig DiLouie, LC.

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The leading source of lighting controls education for more than 10 years, the Lighting Controls Association is a non-profit organization administered by the National Electrical Manufacturers Association with the mission of educating the professional lighting community about lighting control and controllable ballast technology and application. Members include Cooper Controls, DELTA Controls, Encelium Technologies, GE Lighting, Hubbell Building Automation, HUNT Dimming, Leviton, Lightolier, Lightronics, Lutron Electronics, OSRAM SYLVANIA, Philips Lighting Electronics, PLC-Multipoint, Schneider Electric, Sensor Switch, Synergy Lighting Controls, Tridonic, Universal Lighting Technologies and WattStopper.

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