Which describes how lighting control systems should be integrated for energy efficiency?

• A. Controls placed for easy access, support daylight harvesting, occupancy sensing, dimming capabilities, and energy codes compliance
• B. Controls should be hidden and inaccessible
• C. Lighting controls do not affect energy codes
• D. Only use manual switches without sensors

Answer: (A)

The idea is to combine controls in a way that actively reduces energy use by responding to how the space is used and how much daylight is available. Placing controls for easy access ensures occupants can adjust lighting as needed and building operators can maintain settings. Daylight harvesting uses natural light to dim or switch off electric lighting when it isn’t needed, which directly lowers energy consumption. Occupancy sensing turns lights on only when people are present and off when spaces are vacant, eliminating waste from empty rooms. Dimming capabilities let you reduce light levels to suit tasks and daylight levels, saving energy without sacrificing comfort. Compliance with energy codes adds a reliable baseline of efficiency requirements and often mandates specific control strategies, ensuring the system meets established standards. Together, these elements create an integrated lighting control approach that continuously saves energy while adapting to real usage.

Hiding controls makes it hard for users to engage with the system and optimize savings. Controls that ignore occupancy, daylight, or code requirements miss major opportunities for efficiency. Relying solely on manual switches ignores automatic savings from sensors and dimming, leading to higher energy use.