Designing a net zero building means following energy use back to the source. There are multiple ways to reduce energy loads in building. Lighting can be reduced in favor of daylight wherever possible. Spaces are designed to encourage people to walk between floors instead of using elevators. Walls, windows, and ceilings have maximum insulating power (R-value) to retain heat in the winter and maintain coolness in the summer. Window louvers and overhangs are designed to receive sunlight in winter months, when the sun is lower, and to create needed shade in the summer, when the sun is more
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