Outdoor porch lights are a very effective source of lighting when the desired area to be illuminated is small. Such lights are most suitable to light up porches, doorways and walkways.Today, porch lights with LEDs are commonly used, but many people still prefer the traditional incandescent bulbs. Similar to lanterns, the outer coverings of porch lights are made up of glass or crystals. As the area to be illuminated is limited, outdoor porch lights use minimal energy and are, thus, cost effective. These lights also enhance the decorative value of your house.