How do building codes address energy efficiency in lighting design?

Building codes recognize the significant impact of lighting on energy consumption and environmental sustainability. To address energy efficiency in lighting design, these codes typically require the use of energy-efficient fixtures and controls. This includes specifications for lighting technologies that consume less energy, such as LED and compact fluorescent bulbs, as well as the integration of advanced controls like occupancy sensors and dimmers that reduce energy use when lighting is not needed.

The requirement for energy-efficient fixtures is essential because it contributes to lower energy demands, reduced utility costs, and decreased greenhouse gas emissions. Additionally, such measures ensure that buildings comply with standards aimed at achieving overall energy efficiency, which is a key focus in contemporary construction practices.

The other options do not align with the objectives set by building codes regarding energy efficiency. Mandating incandescent bulbs does not promote energy efficiency due to their high energy consumption. Allowing only natural lighting methods ignores the practicality and necessity of artificial lighting in many settings. Suggesting decorative lighting does not take energy efficiency into consideration and could lead to unnecessary energy use if not designed with efficiency in mind. Therefore, requiring energy-efficient fixtures and controls is the most effective approach advocated by building codes to enhance energy efficiency in lighting design.