Cabinet backs solar red-tape cuts after Ministry review

Cabinet on 10 August 2026 agreed a package to progress the Ministry for Regulation’s solar installation review, targeting deep cuts to approval cost and delay for residential and small-to-medium systems.

Regulation Minister David Seymour and Energy Minister Simeon Brown said the Government will advance the report’s recommendations so that residential and small-to-medium-scale solar installation becomes simpler for households and businesses.

The Ministry’s July 2026 report, Improving the solar installation process, mapped a fragmented customer journey. In some cases a small-scale install can require up to six sign-offs and five site visits from four entities before energisation.

Once implemented, ministers project residential installation approvals would fall from about $640 and three months to about $200 and six days. For small-to-medium jobs, such as panels on a milking shed, the projection is from up to $11,000 and six months to about $1,300 and one month.

The Ministry’s cost-benefit analysis puts net benefits at about $28 million over 10 years if uptake does not rise, and around $50 million if lower friction lifts installations. Benefits come from shorter delays, lower compliance costs, more efficient processes and enabling plug-in solar.

Seven regulatory blocks

The review’s 15 recommendations span seven areas: building rules, planning, electricity distributor approvals, metering, retailers, electrical inspections, and plug-in solar.

Cabinet decisions include amending Schedule 1 of the Building Act 2004 to clarify building-consent exemption settings for solar. Ministers also backed nationally consistent planning settings and exemptions for systems under 300 kW and fully roof-mounted arrays. Officials say that could save consumers up to 30 days and between $3,000 and $10,000 where resource consents now bite.

On networks, the report recommends distributors approve streamlined under-10 kW applications by the end of the next working day, against the current Code timeframe of 10 working days for eligible Part 1A applications. It also seeks a streamlined process for under-100 kW applications within five working days. Larger distributed-generation applications currently face longer Code clocks of about 45–80 business days from final application in some bands.

Work will begin on a trial of risk-based electrical inspection. Accredited installers could be exempt from independent in-person checks for installations up to 100 kW. Ministers said that could save consumers up to 45 days of waiting and about $600.

Cabinet also agreed to progress regulatory amendments to enable plug-in solar. Plug-in or “balcony” kits with microinverters that plug into a standard socket are currently illegal under inverter and safety settings dating from about 2012. The review said barriers could be removed with product standards, certification and output limits, aligning with European practice around 800 W feed-in.

Seymour said renters and apartment dwellers stand to gain.

Plug-in systems can be used by renters and people living in apartments who can't access traditional rooftop solar. If they're good enough for Germany and the UK, they're good enough for us.

Rewiring Aotearoa figures cited in coverage put a typical plug-in unit at roughly 7–15% of average daily household electricity use. That is a partial offset, not a rooftop substitute.

Electricity Authority and Code independence

Cabinet will provide the report to the Electricity Authority for consideration on network approvals, metering transparency and competition, and retailer process facilitation. About eight recommendations would require amendments to the Electricity Industry Participation Code.

The Authority is an independent Crown entity. The Crown Entities Act and Electricity Industry Act constrain direct ministerial direction. The Ministry’s report states the Authority is expected to give the recommendations due consideration rather than take binding instructions.

In April 2026 the Authority already required a default 10 kW residential export limit for straightforward small-scale distributed generation, locking in moves from earlier ~5 kW norms. Authority general manager Tim Sparks said about 75,000 households then had solar and more than 14,700 of those had batteries. The solar review further recommends lifting the default export limit from 10 kW per connection to 10 kW per phase, plus hosting-capacity transparency and fee reasonableness.

Future Authority Network Connections work was already flagged to cover residential application processes, plug-in rules and connection fees—overlapping the Ministry package.

Uptake still low by Australian standards

Household solar penetration remains low. At end-2025, Electricity Authority data reported by Newsroom showed more than 73,000 registered rooftop systems, roughly one in 27 homes (~3.7%). The Ministry’s May launch materials put household penetration at about 3–4%, versus more than 30% in Australia. Regional uptake is uneven: Central Otago leads at about one in nine homes; some southern cities sit near 1%.

Typical small-to-medium system costs at launch were cited at $8,500–$11,500, with potential bill savings of more than $1,000 a year for many households. Hardware prices have fallen and average residential system size has risen toward about 7–8 kW, but soft costs and process friction remain the Ministry’s target.

Utility-scale solar sits outside the review’s terms of reference. Transpower’s pipeline and large farms such as Tauhei show separate wholesale-scale growth.

Safety, finance and delivery risks

Inspection exemptions for accredited installers up to 100 kW are a material safety-governance change. The report leans on low non-compliance rates for accredited installers and stronger reporting of failed inspections to WorkSafe. Residual risk will turn on WorkSafe and Electrical Workers Registration Board detail.

RNZ reporting noted that while the review focused on regulation, others identify upfront capital and finance access as binding constraints for lower-income and renter households. Major parties have separately floated loans or subsidies; subsidies sat outside the review’s terms of reference. The $28–50 million net-benefit range is a compliance-friction CBA, not a full energy-system transformation claim.

EDB performance is heterogeneous. Some networks already clear applications quickly; mandatory next-day and five-day clocks will bite slower distributors harder and depend on better hosting-capacity and metering data.

Brown framed the package as giving households more control over bills after the Government’s export-limit changes.

New Zealanders want more control over their power bills and want to harness the power of the sun. These proposals will help give power back to the people by making solar uptake cheaper and faster.

The Ministry expected the full recommendation set could be implemented within about 18 months. Plug-in standards and some inspection settings may move via secondary legislation. Building Act and planning changes require government legislation and resource-management reform timing. Code items remain with the Authority.

Cabinet has agreed to progress the package, not to enact every rule overnight. Households and installers will judge delivery by whether the projected six-day residential path and cheaper plug-in option actually appear on the ground.