The NZ winter power-saving checklist
Winter is where the bill balloons - heating alone is about a third of it. A highest-leverage-first checklist: fix the heat source, stop heat escaping, trim hot water, then the sneaky 24/7 loads.
- 02How-to
How to switch power company in NZ: a step-by-step guide
Switching retailer is free, completes in about three to four days, and never cuts your power off - the same wires and meter stay put. The steps, both free comparison tools, and the fine print.
27 July 2026 · 8 min readRead → - 03Reference
When is the cheapest time to use power in NZ?
On a standard flat plan there is no cheap time - every unit costs the same. On a time-of-use plan NZ has twin peaks, 7-11am and 5-9pm, and active users save around 20% by shifting the big flexible loads.
27 July 2026 · 7 min readRead → - 04Decision
Is solar worth it in NZ? Payback by region (2026)
EECA and Consumer NZ both put payback at 7-10 years. Self-consumption decides where you land - power you use yourself is worth two to three times what exporting earns. The maths, by region.
27 July 2026 · 9 min readRead → - 05Reference
Electricity price per kWh in NZ, by region (2026)
How much is 1 kWh of power in NZ? The national average is about 42c/kWh. The current rate per kWh for every region, cheapest to dearest, why lines charges drive the gap, and how to work out your own rate.
7 July 2026 · 7 min readRead → - 06Buying guide
Hot water heat pump cost in NZ: price to buy, install and run
What a hot water heat pump costs in NZ: about $6,000-$9,000 installed versus $2,000-$4,000 for a plain cylinder. Prices by type and size, what drives the install cost, the running savings and the payback maths.
7 July 2026 · 7 min readRead → - 07Field Note
Standby power: the 5-10% of your bill you can't see
Phantom load runs about 5-10% of a NZ power bill. Why post-2013 standards killed classic standby, the network-connected devices that replaced it, and a device-by-device table of what each really costs.
28 June 2026 · 6 min readRead → - 08Reference
How to actually read your NZ power bill
A plain-English guide to every line on a NZ power bill - daily fixed charge, c/kWh, GST, the EA levy, day/night rates - plus how to find your annual usage and sanity-check the total.
26 June 2026 · 7 min readRead → - 09Reference
What does a spa pool actually cost to run in NZ?
A spa keeps a big body of water hot 24/7, so the cost is heat loss, not soak time - $100-200 a month in a NZ winter. Where the money goes, why the cover is everything, and the worked monthly maths.
24 June 2026 · 6 min readWinterRead → - 10Reference
What winter heating really costs by NZ region
Heating is about 30% of a NZ home's energy and the bill's biggest seasonal swing. Indicative winter cost across six regions, plus the heat pump versus plug-in maths.
22 June 2026 · 7 min readWinterRead → - 11Comparison
Hot water heat pump vs electric cylinder: NZ running cost
Hot water is 25-30% of your bill. A hot-water heat pump delivers the same hot water for roughly a third of the power of a standard 3kW cylinder. We run the annual maths and payback for a 2 and 4-person home.
20 June 2026 · 6 min readRead → - 12Decision
Low user or standard plan: which NZ tariff is cheaper in 2026?
The low fixed charge cap hit $1.80/day in April 2026 and vanishes in April 2027. That has dragged the break-even down to about 4,000 kWh a year, so most NZ households are now better off on a standard plan.
18 June 2026 · 7 min readRead → - 13Reference
NZ power prices rose again: the May 2026 update
MBIE's May 2026 survey puts the national average at 42.0c/kWh - up 3.5% in a quarter and 35% in five years. What rose, why lines charges are behind it, and what to do.
15 June 2026 · 8 min readWinterRead → - 14Reference
The most expensive appliances to run in NZ homes
A handful of appliances dominate every bill. Ranked: spa pools, EV charging, hot water and dryers - with real 2026 monthly costs and what to do about each.
29 May 2026 · 8 min readRead → - 15Decision
Insulation or a heat pump: where to spend $1,000 first
A heat pump only saves money compared to whatever was heating before. Insulation reduces the heat you need, full stop. Most NZ homes should fix the building shell first.
4 May 2026 · 9 min readWinterRead → - 16Diagnostic
My power bill suddenly doubled. What changed?
Almost every sudden NZ bill jump traces to one of six things: heating switching on, a cylinder fault, a longer billing cycle, a tariff change, a dripping hot tap, or a heater left on.
2 May 2026 · 8 min readWinterRead → - 17Reference
EV home charging cost in NZ (2026 figures)
A typical 250 km/week commute adds $45-75 to your monthly bill. Charging on a Day/Night plan overnight cuts that by a third.
30 April 2026 · 7 min readRead → - 18Comparison
Heat pump dryer vs vented dryer: NZ running cost
A heat pump dryer uses about a third the electricity per cycle. A family doing eight loads a week saves around $120 per winter, and stops dumping water into their laundry walls.
28 April 2026 · 7 min readWinterRead → - 19Field Note
Damp NZ homes in winter: dehumidifier or heat pump?
Both cost about the same per month to run. The right one depends on whether you want to be warm and dry, or just dry.
26 April 2026 · 7 min readWinterRead → - 20Reference
Are Day/Night power plans worth it in NZ?
They suit households with a ripple-controlled cylinder, an EV, or anyone who can shift dishwashing and laundry to overnight. Typical savings $10-25/month.
24 April 2026 · 7 min readRead → - 21Comparison
Heat pump vs wood burner: which is cheaper in NZ?
A modern heat pump is now slightly cheaper per kWh of heat than wood, except where you have free firewood. The other tradeoffs matter more than the cost.
22 April 2026 · 9 min readWinterRead → - 22Field Note
How warm should you set your heat pump in NZ winter?
EECA says 18C or above and below 21C - the top of that band is a ceiling, not a target. Each extra degree adds roughly 5-10% to running cost. A practical settings guide with real cost numbers.
20 April 2026 · 8 min readWinterRead → - 23Field Note
How much does a heat pump cost to run in NZ?
The honest answer depends on COP, region, and how many hours a day you run it. Here are the 2026 numbers.
15 April 2026 · 8 min readRead → - 24Notable
Is your heated towel rail costing you $250 a year?
It is 80 watts. It is on 24/7. Nobody told you what that adds up to. (More than you think.)
15 April 2026 · 6 min readRead → - 25Reference
Average power bill in New Zealand 2026, by region
MBIE-published regional prices, average household usage, and why Southland pays more than Wellington.
15 April 2026 · 7 min readRead →
How long would rooftop solar take to pay itself back at your place?