It s free, and it s the most energy efficient way of illuminating a building. You can design room, window, and overhang proportions to reduce summer heat gain, promote winter warmth, and maximize light while avoiding glare. Of course, daylighting is not always adequate or available. Electric lighting should be used to supplement daylight and provide appropriate light levels for particular spaces. The electricity we use for lighting is generated by the burning of fossil fuels, adding tons of pollutants to the atmosphere.
Dimmers provide more lighting options and reduce energy costs.
When designing electric lighting for a particular space, both quantity and quality of light need to be considered. Avoid overlighting a space. In the past, there was a misconception that the more light in a space, the higher the quality. Not only does overlighting waste energy, but it can also reduce lighting quality. Glare is a visual discomfort caused by an excessive bright light source.