This second lighting control category may alternatively reduce lighting power by use of occupancy sensors instead of a time schedule. All other exterior lighting (parking, walkway, driveway, alley, etc.) falls into the second control category, which must reduce lighting power by at least 50% power between specific nighttime hours. Exterior lighting is now split into two control categories: the first category is façade and landscape lighting that must be off between specific nighttime hours.A new parking garage lighting provision is added requiring lighting shutoff, 30% light power reduction when there is no activity, vehicle entrance and exit lighting controls, and daylighting controls.A secondary sidelight daylighting control zone is added adjacent to the primary sidelight zone.A new requirement called “automatic partial-off” reduces lighting power by at least 50% when there is no occupancy in corridors, lobbies, library stacks, classroom laboratories, stairwells, warehouses, and large storage rooms.The list of spaces requiring occupancy sensors is expanded to now include corridors, lobbies, library stacks, lecture halls, multipurpose rooms, stairwells, and warehouses.The occupancy sensor shut off time delay is reduced from 30 min to 20 min for added energy savings.
In larger spaces, the new code allows a manual switch to control an area up to 10,000 ft 2.
Previously, the 2014 Oregon Energy Efficiency Specialty Code, based on the IECC 2009, was used. The 2019 Oregon Zero Energy Ready Commercial Code is based on ASHRAE 90.1-2016. Oregon recently adopted a new commercial building code, creating an energy efficiency increase in commercial buildings estimated at more than 14% from the previous energy code.