Jan 26, 2026
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The hidden $100,000 cost you have to pay on top of your mortgage. And what to do about it

Rewiring Aotearoa's policy director Dave Karl talks to Damien Venuto about the expensive energy subscriptions most of us have to pay now and the role of solar, batteries and finance in reducing those massive costs. "Factoring in the cost of the system, Karl estimates that a family would be as much as $37,000 better off at the end of that 30-year period. And the savings would keep coming in the years that followed."

Electricity costs were up a staggering 12.2% in the December quarter, according to the latest figures from Statistics New Zealand.

The striking thing about this is that an energy bill is something we simply have to pay. It isn’t our morning coffee treat, a discretionary item we can easily opt out of buying for a few weeks.

Tinkering around the edges by reducing usage will help to moderate the bill, but it won’t make you immune to the impact of inflation. According to Karl, a better approach is to reduce your dependency on traditional energy providers.

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