Mercury Energy - New Zealand Electricity & Gas Provider
Follow us on TwitterFollow us on Facebook
Residential Business Farming Large Business
Home About Us News Community Kids Environment Contact Us Help
 

Where does the power go?

A five minute shower costs about 15cents. 40% of the typical power bill is for hot water - so make sure you pay only for what you use.

No cost energy saving hints
Take showers instead of baths and keep them reasonably short (5 - 10 minutes).
Check your hot water temperature at the tap. If it's hotter than 60°C/140°F turn down the thermostat on the hot water cylinder.
Wash clothes in cold water and in full loads.
Fill your jug from the cold water tap and boil only what you need.
Don't rinse dirty dishes under a running hot tap.

Technical energy saving options with some cost
Fix dripping hot water taps. A hot tap dripping at one drip per second will cost $50 per year in electricity.
If your cylinder and/or pipe feel warm to touch then their standing losses are too high.
Fit a hot water cylinder wrap.
Lag hot water pipes, especially the first metre leading from the hot water system.
Install a lower flow showerhead if your shower delivers more than 9 litres per minute (check with a bucket and watch).
Check and attend to leaks particularly
  •   around the base of the cylinder;
  •   near the crox nut;
  •   around vent pipes, and
  •   around showerheads.
Remember a sudden spike in a power account could be caused by pressure release valve or thermostat failure.
Save power this winter
Where does the power go?
 
- Hot water
- Lights / appliances
- Cooking
- Heating
Where does the heat go?
Tips on saving - Room by room
Typical cost of using appliances
3 steps to making your home warmer
Savings checklist
Energy Star appliances