To maximize sunlight absorption in a building, which directional exposure should it have?

To maximize sunlight absorption in a building, having an eastern or southern exposure is ideal. An eastern exposure allows sunlight to enter the building in the morning, which contributes to natural heating and lighting during that time when many people start their day. A southern exposure captures sunlight throughout the day, particularly in the winter months when the sun is lower in the sky. This continuous sunlight not only warms up the space but also enhances the natural lighting, reducing the reliance on artificial lighting.

The combination of eastern and southern exposures ensures that a building benefits from sunlight during different times of the day and throughout various seasons. This arrangement is particularly advantageous in colder climates, where maximizing solar gain can lead to significant energy savings on heating.

On the other hand, western exposure primarily captures sunlight in the late afternoon and evening, which can lead to overheating in the summer precluding comfortable living spaces. Northern exposure generally receives minimal direct sunlight, particularly in winter months, making it less effective for maximizing light and warmth.