Lighting can use around 12% of energy in households and up to 40% in commercial premises, depending on the nature of the business and type of lighting used. Street and public lighting is the single largest source of carbon emissions for local governments.
Old-style incandescent (including halogen) bulbs are highly inefficient, burning most of the energy they use as wasted heat. This also makes them a fire risk.
LED lamps (LEDs) use up to 75% less energy than old halogens. They also last up to 25 times as long, which greatly reduces the need for changing or maintenance—and this is especially useful where fittings are difficult to access.
Switching from halogen to LED is always a bright idea, but do be aware that LED products can be of varying quality. The information on SSL Quality Scheme labels can help you understand the quality of the LED before buying.
Also, because LEDs generate less heat, the load on air conditioning is reduced during summer.
Commercial and public buildings, such as hotels, offices, factories, universities and hospitals, all make substantial savings when switching to LED.
Ways to save
Switch to LED
The up-front cost of LEDs generally has a payback time of less than two years. Government assistance for new LEDs may also be available to householders and businesses, depending on current incentive programs around the country.
Use sensors for occupancy and sunlight levels
Sensors can turn off lighting when a room is unoccupied or when daylight is sufficient. Some LEDs can automatically adjust according to the amount of sunlight entering a room.
Install light-management software
For even greater control of a building’s lighting, sophisticated light-management software systems are available for homes and businesses.
Take advantage of free natural lighting
Install skylights transparent roof panels and/or light tubes to maximise sunlight entering rooms.