Prices are 65% higher in real terms than 25 years ago
As winter approaches New Zealand, households are absorbing another wave of electricity price increases — averaging 8 percent from April 1st — in a market that has seen real prices rise 65 percent over 25 years since deregulation. The Electricity Authority Te Mana Hiko has stepped in to question power companies about the causes and trajectory of these rises, aware that the burden falls unevenly: those in remote regions with lower incomes often pay the most for the same kilowatt-hour. It is a familiar tension in liberalised infrastructure markets — the promise of efficiency meeting the reality of geography, inequality, and compounding cost.
- Power retailers raised prices between 1 and 11 percent on April 1st, adding an average of $16 a month to household bills just as colder months approach.
- The Electricity Authority has launched an investigation, pressing companies to justify the increases and disclose whether further rises are imminent before winter.
- Regional inequality sharpens the pain: Kerikeri residents pay 32 percent more than Wellingtonians for identical electricity use, and the hardest-hit areas tend to have the lowest household incomes.
- Two consecutive years of double-digit increases have pushed residential prices up 20 percent in two years and 65 percent in real terms since the market was deregulated a quarter-century ago.
- The regulator is directing consumers toward comparison tools like Billy, where switching plans can save around $60 a month, while pursuing longer-term structural reforms to encourage competition and new generation investment.
New Zealand's electricity bills rose again on April 1st, with retailers lifting prices by 1 to 11 percent — an average of 8 percent, or roughly $16 added to a typical $200 monthly bill. For households already stretched thin, the timing, just ahead of winter, makes the increase harder to absorb.
The Electricity Authority Te Mana Hiko has asked power companies to explain what is driving the rises and whether more are coming. General manager Andrew Millar acknowledged the pressure on households and said the investigation would look beyond headline figures to examine how different regions and customer groups are being affected.
Much of the increase is structural: half to two-thirds of this year's rises stem from regulated investment in transmission and distribution infrastructure — costs retailers are required to pass on. But the variation between companies and regions tells a more complicated story. Kerikeri in the Far North pays around 20 percent above the national average and 32 percent more than Wellington for the same consumption. Balclutha, Whanganui, Westport, and Gisborne face similarly outsized bills. The pattern is troubling: the areas paying the most tend to have the lowest incomes.
This follows roughly 12 percent increases last year, bringing the two-year total to around 20 percent. In real terms, prices are 65 percent higher than when the residential electricity market was deregulated 25 years ago — more than three times higher in nominal terms.
The authority is encouraging consumers to use its Billy comparison tool, where switching plans or retailers has saved users around $60 a month. Millar also pointed to time-of-use plans and retailer support programmes for those struggling. Longer term, the regulator says it is working to strengthen competition, attract new generation investment, and build efficiencies into the system — though for now, households are left managing the increases while the investigation runs its course.
New Zealand's power bills jumped again on April 1st, with electricity retailers across the country raising prices by anywhere from 1 percent to 11 percent. The average increase landed at 8 percent—enough to add roughly $16 a month to a typical household bill of $200. For families already watching their budgets carefully, that compounds quickly.
The Electricity Authority Te Mana Hiko has now asked power companies to explain themselves. The regulator wants to know what's driving these increases and whether more are coming before winter sets in. Andrew Millar, the authority's general manager for retail and consumer matters, acknowledged the squeeze households are facing. "We know prices are going up and that some households are struggling to pay their bills," he said. The authority's investigation aims to understand not just the headline numbers, but how different regions and customer groups are being affected.
The story behind the price rises is partly structural. About half to two-thirds of this year's increases stem from investment in transmission and distribution infrastructure—the poles, wires, and systems that move electricity around the country. These are regulated costs that retailers must pass on, and they're arriving in a wave. But that doesn't fully explain the variation. Some retailers moved their increases earlier or later than April 1st, absorbed costs temporarily, or spread them unevenly across different plans. Paul Fuge, general manager of the Powerswitch comparison site, noted that retailers often align their increases with the date regulated line charges update, but the timing and method vary considerably.
The regional picture is starkest. Kerikeri in the Far North pays about 20 percent above the national average for electricity—and roughly 32 percent more than Wellington residents pay for identical consumption. Balclutha, Whanganui, Westport, and Gisborne all face similarly outsized increases. The pattern is perverse: areas with the highest electricity costs tend to have lower than average household incomes, while larger cities with higher incomes generally enjoy lower prices. For a household in Kerikeri, the latest increases mean an additional $140 to $420 per year. In Wellington, the same household would see increases of $102 to $305.
This is the second major shock in as many years. Last year brought roughly 12 percent increases. Over the past two years combined, residential electricity prices have climbed about 20 percent. Zoom out further and the picture is even more striking: in real terms, prices are about 65 percent higher than when the residential electricity market began 25 years ago. In nominal terms, they're more than three times higher. For households whose incomes haven't kept pace with inflation, the impact cuts deeper.
The Electricity Authority is pushing consumers toward comparison shopping as a partial remedy. Since launching its Billy comparison site, users have found they can save around $60 a month by switching plans or retailers—though that saving depends heavily on which company they're currently with and what plan they're on. Millar encouraged people to explore time-of-use plans or adjust their consumption patterns. For those still struggling, he said retailers should be willing to discuss payment options and support programs.
But the authority's longer-term focus is on market structure itself. Millar said the regulator is using the tools available to promote competition, encourage investment in new generation, and create efficiencies across the system. "All of these things aim to strengthen the electricity system and bring prices down in the long run," he said. For now, though, households are absorbing the increases, and the authority is gathering data to understand whether what's happening in the market is working as intended.
Notable Quotes
We know prices are going up and that some households are struggling to pay their bills and that is concerning for us.— Andrew Millar, Electricity Authority general manager for retail and consumer
The increases come on top of around 12 percent rises last year, which will be especially hard for many households.— Paul Fuge, Powerswitch general manager
The Hearth Conversation Another angle on the story
Why are power companies raising prices all at once on the same date?
It's partly practical—April 1st is when the regulated charges for transmission and distribution lines get updated, so retailers align their increases with that date. But some move earlier or later, or spread increases across the year differently. There's more variation in how they do it than most people realize.
So half to two-thirds of the increase is just infrastructure costs they have to pass on?
Yes. That's the regulated part—investment in poles, wires, the grid itself. But that still leaves a third to half that reflects other market factors, and that's where the authority wants to understand what's happening and whether it's fair.
Why does Kerikeri pay so much more than Wellington for the same electricity?
It's about the cost of delivering power to that region—fewer customers spread across more distance means higher per-unit costs. But it creates a cruel pattern: areas with higher electricity costs tend to have lower incomes, so the burden falls hardest on people least able to absorb it.
Can people actually save money by switching?
Yes, but it requires effort. The comparison tools show people can save around $60 a month, depending on their current plan and which retailer they switch to. But a third of consumers think all retailers charge the same, so many don't even try.
Is this just a temporary spike or a longer trend?
It's part of a longer trend. Prices have risen 20 percent in just two years, and 65 percent in real terms over the 25 years since the market was deregulated. For households whose wages haven't kept pace, it's become a serious affordability issue.
What's the authority actually going to do about it?
They're investigating to understand what's driving the increases and whether anything unusual is happening. Longer term, they're trying to promote competition and encourage new generation investment. But there's no quick fix for regional cost differences or the structural pressures households are facing.