Name two common lighting efficiency measures for buildings.

Name two common lighting efficiency measures for buildings.

• A. Installing Higher Wattage Lighting Fixtures
• B. Using Color-Tinted Glass to Reduce Brightness
• C. Upgrading to LED Lighting and Implementing Occupancy Sensors/Daylight Harvesting Controls
• D. Replacing LEDs with Incandescent Bulbs and Removing Controls

Answer: (C)

Efficient lighting in buildings comes from two complementary approaches: using energy-efficient light sources and adding controls that cut power when it’s not needed. Upgrading to LED lighting dramatically lowers energy use because LEDs deliver more light per watt and last longer than traditional bulbs, reducing both electricity consumption and maintenance needs. Implementing occupancy sensors ensures lights are only on when spaces are occupied, while daylight harvesting controls dim or switch off artificial lighting in response to available natural daylight, further lowering energy use without compromising comfort. The other ideas don’t fit because increasing wattage raises energy consumption, tinted glass doesn’t directly reduce electrical usage, and replacing LEDs with incandescent bulbs plus removing controls would clearly waste more energy and eliminate savings opportunities. In short, switching to LEDs and applying occupancy or daylight controls are the practical, effective measures.

Efficient lighting in buildings comes from two complementary approaches: using energy-efficient light sources and adding controls that cut power when it’s not needed. Upgrading to LED lighting dramatically lowers energy use because LEDs deliver more light per watt and last longer than traditional bulbs, reducing both electricity consumption and maintenance needs. Implementing occupancy sensors ensures lights are only on when spaces are occupied, while daylight harvesting controls dim or switch off artificial lighting in response to available natural daylight, further lowering energy use without compromising comfort. The other ideas don’t fit because increasing wattage raises energy consumption, tinted glass doesn’t directly reduce electrical usage, and replacing LEDs with incandescent bulbs plus removing controls would clearly waste more energy and eliminate savings opportunities. In short, switching to LEDs and applying occupancy or daylight controls are the practical, effective measures.