Energy Efficient Light Sources

Halogen Bulbs

• Some people just can't bear to part with their incandescent bulbs. Halogen lighting operates off a tungsten filament, much like an incandescent light; however, it's more energy-efficient and lasts longer. Common in lamps, recessed lighting and flood lights, halogen bulbs utilize reflectors and recycle wasted heat more than a standard incandescent.

Fluorescent Lighting

• One of the main competitors infiltrating the market of incandescent lighting is fluorescent lighting. The technology stems from as early as the 1920s; however, it remained relatively subdued until the latter half of the 20th century, when tube lighting became common in offices and kitchens. Fluorescent lighting lasts up to 24,000 hours, depending on the type, which is a far cry from the 2,500 maximum of the incandescent bulb. The bulbs operate using up to 75 percent less energy, as well.

HID Lights

• HID, or High Intensity Discharge, lighting operates with an extremely high efficiency---up to 90 percent better than incandescent bulbs. The bulbs last longer than all other types of lighting; however, they are only practical for indoor arenas or outdoor lighting. HID lights haven't taken over all forms of lighting because of the electric arc, which is established by the ballast. This light-producing arc takes up to 10 minutes to develop, making the light only suitable for situations where lighting is left on for long periods at a time.

Solar Lighting

• If you're looking for the ultimate in energy-efficiency, solar lighting holds the top spot. Individual solar lights often operate individually outdoors. They consist of a solar panel, battery, and bulb. The panel collects sunlight, converting it into electricity that is stored in the battery. Aside from bulb replacement and maintenance, the light operates without utilizing any electricity from homes. During winter months, or in areas that receive little sunlight, solar lights can lose energy-absorption by as much as 50 percent.