Blog · Lighting & energy

LED Lighting for Sydney Homes: What Can You Really Save?

17 October 2026

Understand the real LED efficiency figures, compare running costs and plan lighting that suits your Sydney home.

Warm LED lighting inside ribbed-glass timber cabinets — Illustrative interior image.

The real figure: around 75% less electricity

The Australian Government’s Energy Rating program says a good LED can use around 75% less electricity than a halogen lamp and last five to fifteen times longer. That comparison is about the lamps themselves. It does not mean changing your lighting will cut your whole household electricity bill by 75%. These are general product comparisons, not a Sydney household survey.

A simple worked example

Imagine ten 50-watt halogen lights used for four hours every day. Together they use about 730 kWh a year. Ten 10-watt LEDs used for the same hours would use about 146 kWh: a difference of 584 kWh. This is an illustration using assumed wattages and operating hours, not a guaranteed saving or a like-for-like brightness assessment. Multiply the difference by your own electricity usage rate to estimate the energy cost change; installation costs and daily supply charges are separate.

Choose light output, not just low wattage

Start with the result you need. A kitchen preparation area, bedside reading light and hallway have different jobs. Compare light output in lumens, colour appearance and beam spread, and ask whether the proposed fitting works with your dimmer. A low-wattage product is not a good upgrade if it leaves the room uncomfortable or poorly lit.

Make the upgrade fit the room

Walk through the home at the times you normally use each room. Note glare at the television, shadows on the kitchen bench and areas that feel too bright at night. For Sydney apartments, also consider access above the ceiling and building requirements. A considered combination of task and general lighting can be more useful than simply adding more downlights.

Get a clear installation scope

Ask DTE to assess existing fittings, controls and access before selecting replacements. Request a quote that identifies the products and any associated electrical work. Keep model details and warranties after installation so future replacements are easier to match.