Another energy-efficient bathroom addition to consider is a skylight. It lets in natural light from the roof ... Read the ...

Our tests found that new LEDs and CFLs are light-years ahead of earlier versions ... They're almost as energy efficient as LEDs but take at least 30 seconds to reach full brightness, don't ...

Install energy-efficient lighting. If your home still has incandescent ... you should get an energy audit, a whole-house diagnostic assessment by an energy professional that will identify ways ...

This course considers the efficiency of lamps and luminaires in producing and distributing luminous flux. Lighting controls for energy saving applications are investigated. Principles of exterior ...