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Energy efficient lighting

Energy savings calculator

You can save money on your energy bills and reduce your greenhouse gas emissions by replacing standard globes and halogen downlights with energy efficient CFLs. Find out more about energy efficient lighting

Assumptions
Energy efficient lightsElectricity price cents per kiloWatt hour
Greenhouse gas
emission factor
kg CO2 per kiloWatt hour
(Enter 0 if you buy 100% GreenPower)
Replacing standard light bulbs with CFLs
Standard
Bulb
Watts
Number of
bulbs
Hours used
per day
Electricity
Cost$/year
Equivalent
CFL
Watts
Electricity
Cost$/year
Annual
saving $
Replacing halogen downlights with CFL downlights *
Halogen
downlights
Watts
Number
of bulbs
Hours used
per day
Electricity
Cost $/year **
Equivalent
CFL
Watts
Electricity
Cost$/year
Annual
saving $
Total annual savings
Every year you will save in electricity costs
Every year you will save kg greenhouse gas*

* Note: To change halogen downlights to cater for compact fluorescent downlights will require a licensed electrician.
** Includes 15W transformer