The regulator said the quiet part out loud
The Electricity Authority’s peak-injection rebate scheme takes effect on 1 April 2026. Distributors will be required to pay rebates to households and small businesses that export electricity to the grid during peak demand windows. The policy logic is sound: reward people who relieve network pressure when it matters most.
But in the same announcement, the Authority conceded the scheme’s fatal weakness. As RNZ reported, the regulator acknowledged that rebates “will be repackaged by the retailer” and “may not be itemised on consumers’ power bills as a clear amount of money back.” That is a regulator telling you, up front, that the benefit it just created might not reach you.
$8.60 a year against a $15,000 battery
The headline rebate rates look reasonable on paper. Vector offers 5.24c per kWh, WEL Networks 6.35c, Powerco 7c on weekdays, and Scanpower reaches 13c per kWh. But those rates only apply during narrow peak windows, and only when a household battery is actually exporting.
Network Tasman’s submission to the Authority did the maths the regulator preferred to leave vague: the scheme would deliver “no more than an average of $8.60 per year” to consumers. Battery systems cost between $10,000 and $20,000. The rebate would take roughly 1,700 years to pay back the investment. That is not an incentive. It is a rounding error dressed up as policy.
Network Tasman also flagged a precedent worth remembering. The ACOT regime, designed to reward distributed generation, resulted in over half a billion dollars of payments for “little to no consumer benefit.” New Zealand has played this game before.
The market punishes you for exporting
The rebate scheme sits on top of a pricing structure that actively discourages the behaviour it claims to reward. As Newsroom’s analysis documented, most lines companies charge premium rates during peak periods. A household with a battery can avoid those charges by drawing from storage. That saves real money.
But the moment that household flips from consuming to exporting, sending power into the grid at the exact time the network needs it most, “the network tariff vanishes and they get only a (relatively paltry) retail reward.” If you pay 30c/kWh to consume at peak, the logical incentive structure would pay something approaching 30c/kWh for exporting at peak. Instead, you get a fraction of that, filtered through a retailer with no obligation to show you what they kept.
A further constraint compounds the problem. Many distributors apply a blanket 5kW export limit on residential solar connections, regardless of actual network capacity. Even if every cent of the rebate flowed through, the export cap limits how much value a household can ever extract.
Gentailers banking profits while bills climb
The opacity around rebate pass-through matters more when you consider who stands to absorb the money. Meridian posted $226 million in half-year profit, Genesis $95 million, and Mercury $20 million, all while sending customers price increase notices. Consumer NZ chief executive Jon Duffy said the gentailers’ social licence was “starting to fade” and described retail prices that don’t fall despite lower wholesale costs as “just printing money.”
Power prices rose 12 percent in 2025 and are forecast to climb another 5 percent in 2026. Nearly half of Consumer NZ survey respondents said their latest bill was not fair. Against that backdrop, a rebate with no itemisation requirement is not a consumer win. It is a transfer from distributor to retailer with uncertain onward flow.
As B2B News has previously reported, Octopus Energy has publicly committed to passing the full rebate through. Mercury “uses a range of inputs, including expected wholesale costs and rebates, to set buyback rates,” a formulation that commits to nothing. Most other retailers have stayed quiet.
The government chose tweaks over transformation
RNZ’s investigation found ministers were shown evidence that rooftop solar is among the cheapest electricity sources available, with upfront cost as the primary barrier. Australia spent over $11 billion in state subsidies to reach one-in-three homes with solar. New Zealand, which has higher average sunshine hours than Germany, has one in 35.
The coalition rejected financial support and opted for regulatory tweaks expected to have only a “minor” effect on uptake. Consumer NZ’s Paul Fuge put it plainly: “It’s actually cheaper to make your own power via rooftop solar than it is to buy electricity from the grid. That’s a real game changer…but only if you’ve got access to capital.”
Economist Richard Meade, writing for The Conversation, has warned that well-intentioned electricity market rules routinely produce perverse outcomes. When retailers face a regulatory requirement but lack transparency obligations, “the rational collective response may be to absorb the payment rather than compete on it.”
What business owners should actually do
For anyone weighing a solar-plus-battery investment, the rebate scheme changes almost nothing in the financial equation. The real value remains in self-consumption: avoiding peak grid charges by drawing from your own storage. The export rebate is a bonus so small it should not feature in any serious business case.
The July 2026 requirement for retailers to offer time-varying plans is a genuine step. But the businesses that benefit will be those who demand explicit written confirmation of rebate pass-through before signing contracts, and who favour retailers like Octopus that have committed publicly. Until the Authority mandates itemisation, the gap between what distributors pay and what consumers receive will remain invisible by design.
Sources
- Will you get a solar rebate from your power company? – RNZ (2025-06-04)
- Network Tasman submission on peak injection rebate consultation – Electricity Authority (2025)
- Power market is ugly and asymmetrical for home solar – Newsroom (2024-09-10)
- Is it fair that prices rise as power companies bank profits? – RNZ (2025)
- Solar rebates mandated, will Kiwis actually benefit? – B2B News (2025)
- Government kicked the tyres on solar subsidies but went with minor tweaks instead – RNZ (2025)
- An attempt to lower NZ electricity prices could end up doing the opposite – The Conversation (2025)
- Requiring distributors to pay a rebate when consumers supply electricity at peak times – EA Decision Paper (2025)
- Maximising benefits from local electricity generation – EA Consultation Paper (2025)
- Gentailers push back over Electricity Authority’s level playing field – BusinessDesk (2025)