Staff Writer
ASHRAE’s ANSI/ASHRAE/USGBC/IES Standard 189.1, Standard for the Design of High-Performance, Green Buildings Except Low-Rise Residential Buildings, was released in November 2014. The lighting and controls aspect, which relates to energy efficiency, light pollution, daylighting and occupant lighting control is based on ASHRAE/IES 90.1-2013 but includes a number of modifications. An article in the June issue of LED Magazine provides a summary of the additional mandatory requirements, as well as a description of the prescriptive and performance options. The following requirements apply specifically to energy efficiency:
Section 7, Energy Efficiency (Mandatory)
- Energy consumption for certain lighting systems must be measured separately using a device that communicates remotely with a data acquisition system. The system must be able to store data and provide user reports.
Section 7, Energy Efficiency (Prescriptive Option)
- Lower interior and exterior lighting power allowances must be achieved by applying a multiplier to the lighting power allowances in 90.1-2013.
- Certain hotel and motel guest rooms must install automatic lighting controls that automatically turn off power to lighting and switched outlets after a period of vacancy.
- Lighting in commercial and industrial storage stack areas must be controlled by an occupancy sensor that reduces lighting power by at least 50 percent.
- Security and emergency lighting that must be continually illuminated is limited to 0.1W per square foot. More can be added if it is connected to an automatic shutoff control.
- Sign lighting power must be automatically reduced at certain times. The reduction level depends on the lamp type and whether it operates during any daylight hours.
- Lighting for exterior uncovered parking areas must be controlled by a photosensor and astronomical time switch. Certain lighting must be reduced using an occupancy sensor.
- Installed lighting covered by the Energy Star labeling program must satisfy Energy Star performance criteria.
