Low user or standard plan: which NZ tariff is cheaper for you?

Every NZ household is on one of two plan shapes, and most people never chose which. Your retailer put you on a default, and unless you have actively switched, you are probably still on it.

The two shapes are low user and standard (sometimes called "low fixed charge" and "standard fixed charge"). They are not different companies or different power - they are two ways of slicing the same bill. Pick the wrong one and you overpay by $100-$300 a year for nothing.

How the two structures work

Your bill has two parts: a daily fixed charge you pay no matter what, and a variable charge for each unit (kWh) of electricity you actually use. A low-user and a standard plan trade these off against each other:

• Low user: a low daily charge - historically capped at 30c/day - but a higher c/kWh on the units.
• Standard: a higher daily charge, often $1.50-$3.00/day, but a lower c/kWh on the units.

The logic is simple once you see it. The daily charge is the same whether you burn 5 kWh or 50 kWh, so a household that uses very little power wants that fixed part as small as possible. A household that uses a lot wants the per-unit rate as low as possible, because that is where most of their bill lives. The two plans let each type of household pay less - if they choose correctly.

The break-even, roughly

There is a crossover point in annual usage where the two plans cost exactly the same. Below it, low-user is cheaper; above it, standard is cheaper. Across most NZ retailers that point sits somewhere around 8,000-9,000 kWh a year, or about 660-750 kWh a month.

For context, the average NZ household uses roughly 7,000-8,000 kWh a year, which is why so many people sit right near the line and the "right" answer is not obvious. A one or two person flat might use 4,000-5,000 kWh; a large all-electric family home with no gas can push past 12,000 kWh.

A worked comparison

Take two plausible Christchurch plans at roughly May 2026 rates. The low-user plan charges 30c/day fixed and 42.0c/kWh; the standard plan charges $2.10/day fixed and 33.0c/kWh. Compare them at two usage levels:

The arithmetic on the light household: low-user is 5,000 x $0.42 = $2,100 of units, plus 365 x $0.30 = $110 of fixed charge, totalling $2,210. The standard plan on the same 5,000 kWh is 5,000 x $0.33 = $1,650 plus 365 x $2.10 = $767, totalling $2,417. The low user saves about $207 a year by being on the right plan.

Flip it for the heavy household. At 11,000 kWh the lower 33c rate saves 11,000 x 9c = $990 on units, while the higher daily charge costs only about $657 more a year. Standard comes out roughly $330 cheaper. Same two plans, opposite winners - it depends entirely on how much you use.

Who each plan suits

• Low user wins for: one or two person households, well-insulated efficient homes, homes with gas hot water and cooking, and holiday homes or baches that sit empty much of the year (you still pay the daily charge for every day you own the connection, so a low one matters).
• Standard wins for: large families, all-electric homes with no gas, households running a hot water cylinder, multiple heat pumps, an EV on the charger, or a spa pool.

A bach is the clearest case. If it is empty 40 weeks a year it uses almost no units, so the only thing that matters is the daily charge - low-user every time.

The low fixed charge phase-out changes the maths

Here is the moving part. The regulation that capped the low-user daily charge at 30c/day is being removed in steps between 2022 and 2027. Each year the cap lifts, and retailers raise low-user daily charges toward standard levels. A low-user daily charge that was 30c a few years ago may now be 60c, 90c or more depending on your retailer and region.

That erosion does two things. It shrinks the saving for light users, and it pushes the break-even usage downward - as the low-user fixed charge climbs, standard plans become competitive at lower and lower usage. The upshot: a plan choice that was correct in 2022 is worth re-checking now, because the goalposts have shifted under you.

Read your own usage off a bill

You do not need to guess. Every power bill states your usage. To get your annual figure:

• Find the kWh used on a recent bill and note the number of days it covers.
• Better still, find the "last 12 months" or annual usage summary many retailers print - that is the number you want, because it averages out winter heating.
• If you only have one month, multiply by 12 but remember winter months run high and summer low, so a single winter bill will overstate your annual usage.

Once you have your annual kWh, the rule of thumb is blunt but useful: under about 8,000 kWh a year, lean low-user; over it, lean standard. If you are within a thousand kWh of the line, compare the actual plans on Powerswitch, because the exact rates decide it.

Work out your own number

Enter your appliances and region into the NZ Power Bill Calculator to estimate your annual kWh, then test it against both plan types. The glossary explains every line item, and the methodology page shows the arithmetic the calculator uses.

Related guides

• Average NZ power bill by region (2026) - see where your usage sits
• Day/night and controlled power plans explained - another way to cut your rate
• NZ power prices: winter 2026 update - the latest regional rates