Building automation systems (BAS) provide automatic control of electrical loads, such as HVAC, lighting and electric motors, and functions not related to energy management, such as security and fire safety systems. Energy management systems (EMS) provide automatic control of electrical loads to manage energy consumption either as a stand-alone system or as part of a BAS. While EMS may be capable of provide automatic switching of large blocks of lighting loads, only a fraction of installed EMS actually control lighting, according to the U.S. Department of Energy (2003). EMS that control HVAC are installed in about 5.6% of commercial buildings representing 24% of commercial floorspace—most commonly >100,000 sq.ft. office and education buildings—while EMS that control lighting are installed in 1.3% of buildings covering 7.4% of floorspace.
Archives for May 2009
The U.S. Department of Energy (DOE)’s Commercial Lighting Solutions (CLS) program, a component of Commercial Building Energy Alliances, seeks to stimulate adoption of advanced lighting technologies and design practices by making them available to the broader lighting specification community, not just the leaders in the field. The result is an extraordinary interactive web tool that enables any lighting decision-maker to save 30% more energy than the ASHRAE 90.1-2004 standard energy code without sacrificing lighting quality that users need from lighting systems.