In the US, North and South windows are good; East and West windows, not so good. Fortune favors the prepared and just by knowing a little more about sunlight and natural energy might come in handy for one of your customers, or even your own residence. Daylighting — the use of windows or skylights for natural lighting and temperature regulation — is one building strategy that can save money for homeowners and businesses. Highly efficient, strategically placed windows maximize the use of natural daylight in a building, lowering the need for artificial lighting without causing heating or cooling problems.
For more information on building technologies from the Office of Energy Efficiency and Renewable Energy, visit the Building Technologies Office website.