Powerbill/Appliance costs

What does a instant electric shower cost to run?

In New Zealand, a typical instant electric shower used for its typical minutes per day costs around $28/month at the current national average rate of 40.6c/kWh. Very high wattage but only on during the shower

Monthly cost
$28
national average
Annual cost
$333
12 months at current rate
Cost per hour of use
$3.65
nameplate wattage × rate
Cost by regionMBIE Feb 2026
RegionRateMonthly
Queenstown40.3c/kWh$28
Dunedin39.6c/kWh$27
Christchurch36.6c/kWh$25
See this in the full calculator

Frequently asked

How much does a instant electric shower cost to run in NZ?

At the national average electricity rate of 40.6c/kWh, a typical instant electric shower costs about $28 per month, or $333 per year. Actual costs vary by region and how heavily you use it.

Which NZ region has the cheapest instant electric shower running cost?

Of the five centres shown on this page, Christchurch is the cheapest at $25/month, and Queenstown is the most expensive at $28/month. The 30% spread reflects regional MBIE retail rates.

Wattages and usage defaults from Consumer NZ, EECA Genless and Frugal Kiwi. Regional pricing from the MBIE Quarterly Survey of Domestic Electricity Prices, last updated 2026-02-15.