LEDs are the most efficient and longest-lasting lighting option and good for most general household use. They're especially good for fittings that are hard to get at as you don't have to change the bulb often. Whilst they cost a bit more upfront, over their life the energy savings make up for that many times over.


  • Cost from $12 per bulb
  • Use up to 80% less energy than standard incandescent light bulbs for the same light output
  • A lifetime of at least 15,000 hours, around 15 times longer than a standard incandescent light bulb
  • Look for  ENERGY STAR® qualified bulbs to find the most energy efficient, best performing LEDs
  • Immediate light when turned on

Report on LEDs - Consumer New Zealand website


Video - You pay 400% more to run a standard bulb instead of an LED

$290 savings based on a standard 100W bulb replaced by an LED, as per manufacturer’s claims of 15,000 hours and a variable electricity price of 24 cents per kilowatt-hour. 

Keep in mind

  • If you want to use LEDs with dimmer switches, check the packaging to make sure you choose a model that suits dimmable light fixtures
  • Most LEDs only go up to a 75 watts (W) standard incandescent light bulbs equivalent, although there are a few new products available that go up to 100 W equivalent
  • Choose a warm white LED for living areas and bedrooms. Cool white LEDs are more suitable for task lighting e.g. kitchens, bathrooms, offices.

Where to buy

  • Easily available at most DIY outlets and specialty lighting stores, usually available at supermarkets and variety stores