How can a building be designed to reduce the need for artificial lighting?

1. Prioritize natural lighting: A building should be designed with sufficient window openings to allow natural light to penetrate the interior of the building. This not only reduces dependence on artificial lighting but also has health benefits for occupants.

2. Light-colored interiors: Light-colored walls and ceilings reflect natural light, making the interior brighter and reducing the need for artificial lights.

3. Outdoor shading devices: Outdoor shading devices such as awnings, canopies, and louvers can effectively reduce the amount of sunlight entering the building, minimizing glare, heat gain, and cooling costs.

4. Light wells: A light well is an open space in the center of a building that allows natural light to reach the interior spaces. This design feature is especially useful for interior rooms that do not have direct access to external windows.

5. Clerestory windows: These are windows placed high in the wall, typically above eye level, to allow natural light into the room. They are used to let in light without sacrificing privacy.

6. Energy efficient lighting: The use of energy-efficient lighting such as LED or CFL bulbs is also a great way to cut down on the use of artificial lighting.

7. Use of reflective surfaces: Reflective surfaces such as glass, mirrors, and metal reflect light and help to distribute it throughout the interior space.

8. Lighting controls: The use of lighting controls such as occupancy sensors, daylight sensors, and timers can ensure that lighting is used only when needed, reducing energy waste.

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