How is a dome energy efficient?
The decreased surface area of a geodesic dome requires less building materials, which means that there is less surface area per unit of volume per spherical structure; exposure to cold in the winter and heat in the summer is decreased. The concave interior creates a natural airflow that allows the hot or cool air to flow evenly throughout the dome with the help of return air ducts. Extreme wind turbulence is lessened because winds that contribute to heat loss flow smoothly around the dome. And with the proper heating or cooling equipment, the internal temperature can be controlled.