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Consumer NZ calls for changes to electricity market saying NZ can continue to patch over the problems, or it can redesign the electricity system around customers

Public Policy / news
Consumer NZ calls for changes to electricity market saying NZ can continue to patch over the problems, or it can redesign the electricity system around customers
A composite image of a pylon overlayed with grid paper, a hand holding New Zealand money and an electrical plug.
Since reforms in 1999 to New Zealand’s electricity industry, household electricity costs have risen by around 177%, Consumer NZ says. Composite image source: 123rf.com, Unsplash and interest.co.nz

Household electricity costs have risen by around 177% since reforms in 1999 to New Zealand’s electricity industry, a consumer advocacy group says. That’s nearly twice the rate of inflation.

“Even when wage growth is factored in, electricity is now approximately 65% more expensive in real terms. Low-income families have been hit the hardest and are spending an average of 7.5% of their incomes on electricity,” Consumer NZ said.

In its recently released report called Power. At what cost?, the organisation found a quarter of households had trouble paying their bills in the last year, a 5% jump from the previous year.

Of those surveyed, 32% had managed to pay their power bills by cutting back on essentials, while 41% of respondents went without heating to save money.

The pressure to pay power bills wasn’t just impacting those on lower incomes.

According to an Electricity Authority survey: “Across middle-income households, around half describe their bill as at best somewhat affordable. Even among the highest earners (over $150,000), 30% still describe their bill as only somewhat affordable.”

In its report, Consumer NZ said: “For years, we’ve told New Zealanders they can manage their power costs by using less electricity, switching retailers or choosing a better power plan. These actions still help some households, but individual behaviour can only achieve so much.”

The report pointed to four things Consumer NZ believes had led to high power bills:

  • Four big power companies - Contact, Genesis, Mercury and Meridian - control most of the retail market and own the generation assets, which gives them advantages that smaller retailers and generators don’t have.
  • Power prices don’t always reflect real costs.
  • New Zealand hasn’t invested enough in homegrown energy. Consumer NZ said the country needs more renewable energy and dry-year energy capacity.
  • Short-term politics and policy uncertainty have prevented the development of a long-term, national energy strategy.

The big four power generator-retailers are Meridian Energy, Contact Energy, Genesis Energy, and Mercury Energy. Currently, the Government owns a 51% stake in Meridian, Genesis and Mercury. Contact is one of the country's largest share market listed companies.

Consumer NZ also pointed to increased lines charges, the removal of a price cap and regional disparity in pricing as other factors contributing to high power bills.

“Household-level behavioural change cannot fix a market that is structurally failing consumers. A family cannot budget its way out of a pricing system that keeps wholesale prices high. A household in debt cannot always switch to the cheapest deal," Consumer NZ said.

“And no consumer can solve a lack of investment in new generation or dry-year resilience on their own.”

Consumer NZ said the current system was working for the gentailers and the market was failing consumers.

“The solutions are not simple, but the direction is clear. New Zealand needs to: end the dominance of the big four power companies, make power prices reflect the real cost of generation, invest in more homegrown energy, [and] set a long-term plan together.”

“New Zealand can continue to patch over the problems in the energy sector, or it can redesign the electricity system around customers,” Consumer NZ said.

“Aotearoa is at a pivotal moment where we can choose to transition to a resilient energy future and bring down power bills for the benefit of all New Zealanders.”

‘Consumers are protected from the fluctuations of the wholesale market through smoothed plans’

Bridget Abernethy, chief executive for the Electricity Retailers' and Generators' Association of New Zealand (ERGANZ), said: “Meeting New Zealand’s growing electricity demand with affordable and renewable energy requires investment.”

“We've seen a renewables boom in recent years - Transpower says 17 new projects are now being connected to the national grid, adding more than 3000 MW (megawatts) of new capacity across wind, solar, geothermal, and grid-scale batteries.”

“In addition, ERGANZ members have $10 billion of planned investment in new generation projects such as geothermal, wind, and solar over the next ten years,” Abernethy said.

“This significantly exceeds historic build rates, and as a result, we’ve recently seen some of the lowest winter wholesale prices in over a decade - forward prices have also fallen. This level of investment into new generation will help deliver a strong supply of affordable electricity for consumers in the long term.”

“At the same time, the four gentailers’ investment in Huntly Firming Options will ensure back-up supply is available when intermittent renewable generation falls short,”  Abernethy said.

ERGANZ’s members include Contact, Genesis, Mercury, Meridian and Nova Energy.

Abernethy said electricity price increases were driven by a range of factors including lines charges and transmission costs to upgrade infrastructure to cater for increased demand, retail and generation costs.

“Consumers are protected from the fluctuations of the wholesale market through smoothed plans.

“None of the major reviews of the electricity sector over the past two decades have found that breaking up generator-retailers would lower prices for consumers.”

Energy and politics

Asked how he felt the energy market was doing for consumers, Energy Minister Simeon Brown, on Thursday, said "what we've seen is wholesale prices have dropped significantly since we announced earlier this year the LNG (liquefied natural gas) importation terminal".

“As we deal with the dry-year risk, that is making wholesale prices drop significantly,” Brown said, but what the Government wanted to see was those prices being passed onto consumers. 

Breaking up the big power gentailers into separate generators and retailers has been a political topic.

Prime Minister and National leader Christopher Luxon previously told RNZ in March that National wouldn’t be campaigning on breaking up the gentailers. “Our view is that splitting up the gentailers would drive a lot of uncertainty in the energy sector when we need a lot of certainty right now.”

NZ First leader Winston Peters, in his State of the Nation speech in March, announced that his party was proposing to split the big power gentailer companies up “so they could no longer control both the power and price.” 

The Green Party has a Member’s Bill from MP Scott Willis sitting in the biscuit tin that aims to separate the generators and retailers.

Meanwhile Labour leader Chis Hipkins said last week that his party had more energy policy to come that was focused on the market and the need to reform the market. 

“The market's clearly not operating as it should. It's not giving New Zealand the power prices that we should be able to have, given the abundance of renewable energy that we've got."

ACT isn’t open to separating the gentailers with leader David Seymour saying last week; "if you look at the last three or four years, yes the energy price has gone up, but actually the transmission costs have gone up as much as the price of the actual electricity."

Seymour said ACT would be putting out policy on how to get transmission costs down "because that's what's been hurting people, or at least [it's] about half the problem."

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28 Comments

They can't go much higher before people ditch their connection to the grid. Especially once everyone has two big batteries parked in their driveway; if you have low sunshine during the week you just drive to a charger then power your house from the car. 

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Once everyone has ditched the grid, how are you going to connect that EV charger in Mt Roskill new world to the south island hydro plants?

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That's a self-defeating oxymoron. 

By the time they've ditched the grid they're charging at home. 

Just as well, because this twit government is heading to sell all the electricity to an overseas elite, to keep their bubble pumped. 

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The grid will exist, particularly for business. But it won't need new investment and it won't be able to gauge. 

Have you been stalking me? 

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It won't if it's only business, not enough carry and where we are headed, it will probably not be maintainable. 

Not my style - but I do wonder at people who seem to wear blinkers and tend to regard economics-believers as belonging to that echelon. It has led me down a long road of learning about thinking; how to think; why people don't, or do but flawedly. 

 

 

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Um, maybe stop increasing demand?

I realise this simple idea would be inconvenient for the growth cult who want to exponentially increase human energy production until Earth glows in the infra red like a brown dwarf star, but who says the growth cult is intelligent? 

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True, demand would be very low once everyone in the country is over 80. 

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How likely is having a population existing soley of 80 y.o. people Jimbo? 

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With no immigration and few people having kids? Why would any young people stay once the tax rate hits 100% for NZS and healthcare? Especially if Aus didn't adopt that policy and didn't have the same problems. 

NZ super, a fixed super age, and increasing life expectancy all rely on the next generation being bigger than the previous to pay for it. Until these change we need a growing population. 

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Given that our species is about 6x overshot, your last sentence is invalid. 

It also avoids the point I have multiply made to you, that in terms of energy, human output is mere noise compared to the fossil energy which constitutes 60% of our total energy-use and underwrites electricity (the other 40%) to the point where I doubt the grid can be maintained without it. 

Money isn't the measure; energy per capita is. 

 

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Total NZ electricity consumption was 40,342 GWh in 2014, and  40,253 GWh in 2025.

Not that we shouldn't grow, and we will actually see the a lot of new generation and load start to tick up those numbers this year with major projects coming online.

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"Advocates are calling for action over the frigid flats."

and

"We're all pretty restricted on our power use. We don't use our communal heat pump."

https://www.rnz.co.nz/news/community/835424/same-temperature-as-outside…

I wonder if there's a connection? Usually warming a flat would require a heat source? 

"They couldn't access the walls to put insulation in and so there's only double glazing in one room, no insulation in the walls or under floor because they, you know, 'quote marks' couldn't access it,"

Rosie, the complainer, obviously doesn't study either physics or history. These old masonary buildings have no cavity in the walls for installing insulation and are usually built close to ground level, meaning "no access".

Having lived in old housing such as that being complained about, they are naturally well insulated. The secret is to not let them get cold in the first place. Thermal mass of the structure will maintain a comfortable temperature. This does require heat energy, which the complainer seems unwilling to apply, or unwilling to pay for, which isn't the fault of the accommodation, or the landlord!

 

 

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Most students in Dunners are on the deals that gives free power after 2100hrs. Driers, heatpump's, heaters, electric blankets are all on in force after that. Yes old flats not renovated or unable to be renovated are real. Most of those speculords are just creaming it.

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Generally you get what you pay for. Complaining about why a house is cold when you don't heat is something a 5 year old could understand the remedy for.

Growth in demand is the underlying issue with electricity pricing. 

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Growth in demand coupled with the law of diminishing returns. 

We dam the best site, first. It follows that every 'next' site will be sequentially 'worse'. Same with everything, right down to suburban sprawl sites (the Q/town basin being a classic example of worse and worser) every suburb is 'further away'. The copper wires used to require 10 tons of overburden removal to get a ton of ore. Last I checked (5 years ago) it was up to 400 tons - and will be substantially more, now. 

For a while, economies of scale and low-hanging fruit make things get cheaper - but that trends back the other way at some physics-driven point. This gets worse, not better. 

 

 

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Get the Govt to support Solar. Went down this track a its 80 free of historical monthly bill in mid winter. Summer will obviously be better.

That said if you look at the offices the power companies are renting there are decisions that could have been made to save money and charge less. Mercury are a classic on this.

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Our household is still chipping away at the credit we built up selling excess power back over summer from the panels. Given the generation is half currently what it would be mid-summer, the grid tops the battery up overnight for a couple of hours which is sufficient to reheat the hot water cylinder after 2 showers in the morning, then the solar tops it back up on a good day. One of the best investments a household could make if you have reasonable sunshine hours. 

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Now that I drive an EV, I'm considering installing solar panels on my roof.  I hear they have become more efficient and cheaper.  I think my house is well suited having a north facing roof.

Any advice welcome ?

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Yes.

Roof mounting is inferior to ground mounting, if you have a choice. Ground-level cleaning is easier, roof-access ditto. I appreciate city dwelling sometimes rules that out via shadowing. 

They have become about as efficient as produceably practial (in the lab they can get better, and I can put a mirror in from of mine and exceed the rating - but shorten the life, obviously). I can detect little deterioration, and my arrays are 20 and 17 years old now. There are upper limits to thermal efficiency :)

North isn't always perfect; if you get morning sun more than afternoon (common at the coast particularly in diurnal conditions) then a bias East is optimal. I happen to have a hill to the East, so am optimised at about 1pm, std time. 

The optimal angle varies with latitude - where I am the winter soltice sun is 22deg above the horizon, and winter gain is more important than summer. I run about 45deg, used to rotate and tilt but now fixed. Closer to perpendicular the better. As to having enough sunshine, I've had none today (2deg outside currently) but the primary (lithium) bank are at 13.4v, the secondary (very old L/A) are at 12.9v. It's a matter of learning to live with the weather/nature, rather than demanding instant indulgence. 

I think we have seen the cheapest they will ever be (they got down to 60c/Watt, maybe 10 years ago. Haven't checked lately but I doubt it is as low as that, now). The rising ECOE globally and the ever-more-dissipated ores remaining, will drive that. So much so that I regard new PV, stored dry and dark, as money in the bank. 

Work on in-house efficiencies: what you don't need doesn't cost (I velcro polycarbonate panels to our upstairs windows through winter, even though they're double glazed. Only do the washing when the sun shines - that kind of thing. 

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Panels are cheap, so whatever quotes you get for whatever size system, get a few more panels added in, and possibly a bigger inverter if it is needed to manage the extra solar capture. Most companies quote a system based on your last 12 power bills, but always worth getting something slightly bigger as the extra cost is minimal vs the return you get back.
If you have the ability to get something that can link in with your app for the system and monitor hot water temperature, would definitely recommend as it will show you how much power hot water usage uses (more than most think) and helps alter usage patterns to minimise drawing from the grid where possible.
We got 16 panels after being quoted for 12 as we planned for a growing family. Have not had to pay a power bill since last September and loving it.

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Consumer NZ go political and can't even read their own chart. Power prices went down/flatlined in 1999 and never looked back after Helen's 2003 reforms. What evidence does Rebecca have that increased intermittent electricity decreases electricity prices and why didn't it happen when intermittent supply was ramped up in the UK, Germany, Australia, NZ...?

https://www.consumer.org.nz/d-img/1784246038-cost-of-electricity-2026.j…

 

 

 

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You've had that explained to you. 

More than once. 

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It strikes me that Consumer, and the public debate is 6 months out of date. Both short and long term wholesale prices have now collapsed to the point where new wind and solar projects are becoming marginal unless its a great project. Winter is firmed better than its been in ages.

Yeah lines charges went up but how much do you not want the power to go off? and how much do you want to let the assets run down? Nobody else is going to pay, as some towns and cities are finding out with water investment finally starting to happen.

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Resilence/capacity costs. 

Most folk want most things for as little as possible, but perfectly delivered (not just power - food, stuff). 

We lost relativity when we created cities - most folk live in them and everything just appears; flick the switch, turn that tap, flush that loo, buy that food, order that shyte from Temu. It seems like magic to them. 

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Wind and solar projects were always marginal - bludging off the grids inertia and base load back up to the point where things go all South Australia on you.

Financial commitments for new renewable generation projects fell to a 10-year low in 2025 of $4.4 billion, half the value of projects that reached financial close in 2024, according to the Clean Energy Council’s annual report, published on Tuesday.

https://www.smh.com.au/business/the-economy/investors-desert-australia-…

https://www.theaustralian.com.au/business/renewable-energy-economy/rene…

https://www.abc.net.au/news/2026-07-21/sa-power-prices-hike-reliability…

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Luckily we have much better electricity policy than Australia. They do all kinds of crazy subsidies and interventions like CFD's putting a floor on prices and hiding risk, running parallel capacity markets etc. We don't, and all the costs, benefits, and risks fall to the solar developer.

Our energy only market means you only get paid for what you produce, when you produce it. You don't get paid for producing power when nobody wants it, and if you cant dispatch you miss out on peaking which is where a significant amount of total market revenue is. Our market is also allowed to have volatile prices and has a high cap, a big chunk of the year spot prices are below cost. That you can still make money from solar indicates that it provides a real service to the market.

As an anecdote, every gentailer in the most recent round of investor days had models for what they thought price participation for wind and solar would fall to as they begin to make up a larger share of supply, and were pitching how their company was going to do better than the others by providing firming and dispatchable energy. Or by building their solar and wind in places uncorrelated with other similar generation and near load. ie: Kaiwaikawe away from all other wind sites, Glorit with a direct line to Auckland. 

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All the costs don't fall on the developer. For instance the simple system sees 67.5% of transmission cost loaded on the long suffering consumer - for low power density projects in the backend of nowhere.

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The transmission systems costs are fixed, we're paying for it regardless. I dont know of any instances where additional transmission costs have been added to the system just for a generation project, in decades? Transmission losses and capacity constraints are internalised to the developer through nodal pricing.

Transpower are making noises about projects to enable wind and solar projects, and trying to solve a first mover disadvantage. Easy solution though, allocate costs to the beneficiaries.

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