Lighting - the bottom line

The Bottom Line

Use fluorescent lamps rather than incandescent lamps where possible. Fluorescents use about 70% less electricity than incandescent lamps of similar output and are very efficient for areas where lighting is required for long periods of time. Fluorescent lamps are between two and ten times the price of an incandescent light bulb, but have ten times the life.

Don't leave outdoor lights on all night or during the day. Consider using timers or sensors.

Use the lowest wattage light needed to adequately light up an area.

Choose light fittings that allow most of the light through so a lower wattage bulb can be used. Some light fittings can block 50% or more of the light.

Clean light fittings regularly to allow more light to pass through.

Use incandescent lights for general or special purpose lighting only in rooms used infrequently and for short periods, such as laundries and bathrooms.

Downlights provide bright pools of light rather than general illumination. Up to six downlights may be required to light the same area as one pendant light. They can also cause gaps in the ceiling insulation, particularly if they require clear space to allow heat to dissipate.

Think about other ways of lighting with fluorescents before installing halogens. If you select halogen lamps, you can still save energy by fitting lower wattage and more efficient bulbs.

Turn lights off, especially if you are leaving the room for more than ten minutes.

Light colored paint and furnishings reflect light, reducing the need for high levels of artificial lighting.

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