Solar Panels in Napier, Hastings and Hawke's Bay: Installers
Unison's 10kW export limit, 28.6c/kWh power rates, and 7.0 to 7.6 year typical payback. Among NZ's strongest solar economics, from central Napier to the Hastings plains.
Hawke's Bay solar: key takeaways
- Hawke's Bay pays about 28.6c per kWh for grid power, among the highest in New Zealand, which pushes typical payback down to about 7.0 to 7.6 years.
- A typical 6.6kW Hawke's Bay system generates around 9,430 kWh a year from 2,100 sunshine hours and saves roughly $1,830 to $1,970.
- Unison allows a default residential export of up to 10kW, up from the old 5kW cap, and may briefly curtail exports to manage the network.
- A 6.6kW system in Napier or Hastings typically costs $13,500 to $15,000 installed, with coastal homes paying a small premium for marine-grade mounting.
- Using a unit yourself avoids the full 28.6c retail rate, well above what exported power earns, so midday appliance timing matters more than maximising export.
Is solar worth it in Hawke's Bay?
Hawke's Bay is one of the warmest and sunniest North Island regions, with 2,100+ annual sunshine hours and an average daytime rate of 28.6c/kWh. Strong solar yield means typical 6.6kW system payback in Hawke's Bay sits around 7.0 to 7.6 years, around the middle of the regions we cover. Unison (Napier, Hastings, Hawke's Bay) is the dominant network, and it has allowed up to 10kW of export from a single-phase home on its fast-track application since November 2025, up from its old 5kW cap. The region's mix of urban, rural, and vineyard properties provides exceptional roof space for residential solar, and at 28.6c/kWh every kWh you use yourself is worth well over what exporting it would earn. Whether you're in central Napier, the Hastings plains, Havelock North, or further into the wine country, this guide covers Hawke's Bay solar production data, Unison's pre-approval process, and Solar Scout-vetted installers operating across the region.
New to solar altogether? Our guide to solar panels for NZ homes covers how a system works, what it costs and whether it pays, before the Hawke's Bay detail below.
The local detail in Hawke's Bay is roof space. Vineyard, orchard and lifestyle properties around Hastings, Havelock North and the plains tend to have both bigger roofs and bigger daytime loads, which is exactly the combination that suits a larger array under Unison's 10kW default export. On a standard suburban Napier home, a 6.6kW system making 9,430 kWh a year is usually the right starting point, and the 28.6c retail rate means self-consumption does most of the work. For a clear look at how payback is actually calculated, our full NZ payback breakdown walks through every assumption behind the numbers.
Want a personalised estimate for your Hawke's Bay home? Answer a few quick questions and compare quotes from up to 3 Solar Scout-vetted installers.
Every region has a page like this one. The NZ solar by region hub lines them all up, with sun hours, export limits and retailer buy-back rates side by side.
How much solar will you generate in Hawke's Bay?
With 4.3 peak sun hours per day and a production factor of 1.08 relative to the national baseline, here's what a typical roof-mounted system generates in Hawke's Bay per year.
Assumes you use 40 to 50% of what you generate and export the rest at 13c/kWh. The daily fixed charge on your bill does not go away with solar, so it is not counted as a saving. The daytime rate used here is 28.6c/kWh. Your actual savings depend on roof orientation, shading, and your daily usage pattern.
For the national picture, see how Hawke's Bay stacks up against the rest of the country on annual generation per kW installed.
Electricity and buy-back rates
The daytime variable rate in Hawke's Bay averages 28.6c per kWh across the retail plans available on the local network. Every kilowatt-hour you self-consume from your panels saves you that variable rate. It does not remove the daily fixed charge, which you keep paying whatever your panels produce, so we never count it as a saving. Excess generation flows back to the grid, and your retailer pays you a buy-back rate. Retailers set those rates nationally rather than by region, so the figures below apply in Hawke's Bay the same as anywhere else. Each card shows the headline rate and the rate you earn outside the peak windows, because for a household without a battery the second number is the one that does most of the work. The conditions behind each rate are in the guide linked below.
Self-consumption is the bigger saving: every kWh you use yourself is worth 2 to 3 times more than every kWh you export. For the full national retailer comparison, see our buy-back rates guide.
Unison export rules
Unison (Hawke's Bay including Napier and Hastings) has allowed up to 10kW of export from a single-phase home on its fast-track application since November 2025, up from the old 5kW cap. Most Hawke's Bay homes are still sized to maximise self-consumption rather than export, because the rate you avoid paying on power you use yourself is higher than the rate you earn selling it back. Vineyards and rural properties tend to size larger because of higher daytime loads.
For the full step-by-step from accepting a quote to switch-on, see our NZ solar installation process guide.
Typical system economics
Below is what a typical 6.6kW system looks like in Hawke's Bay from a financial perspective. Real numbers will vary with installer, brand, and roof complexity. For the full national pricing context, our NZ solar installed-cost guide shows what 6.6kW jobs typically include and how to spot a fair quote.
What you can expect in Hawke's Bay
System size
6.6kW
Installed cost
$13,800
Annual generation
9,430 kWh
Annual savings
$1,830-$1,970
Payback period
7.0-7.6 yrs
After this point, the power is yours.
Assumes you use 40 to 50% of what you generate and export the rest at 13c/kWh. The daily fixed charge on your bill does not go away with solar, so it is not counted as a saving. Estimates also use the regional production factor and the local daytime variable rate. Your actual savings will vary with your roof, usage pattern, and retailer.
Sunshine by month in Hawke's Bay
Solar generation tracks closely with sunshine hours. Here's how Hawke's Bay's monthly sunshine hours look across the year (NIWA data).
How Hawke's Bay compares month-to-month
How Hawke's Bay compares with nearby regions
Here's how Hawke's Bay's solar numbers stack up against its neighbouring regions, on annual sunshine, typical output from a 6.6kW system, local power price, and payback period.
Choosing a solar installer in Napier, Hastings and Hawke's Bay
Napier, Hastings and Havelock North have a healthy mix of local installers and national companies, enough to collect three comparable quotes without stretching. Filter on SEANZ membership, EWRB-registered electricians, a written workmanship warranty of five years or more, and references from recent Hawke's Bay jobs.
The local check is Unison paperwork: your installer files the distributed generation application that unlocks the 10kW export limit, and one who works Unison's process weekly will give you a realistic switch-on date. On coastal Napier properties, ask what corrosion protection the mounting specification includes.
Our guide to choosing a solar power installer covers SEANZ membership, the questions to ask, and the red flags to avoid, wherever in the country you are.
Solar Scout-vetted solar installers serving Hawke's Bay
Every installer in the Solar Scout network is independently vetted. We connect you with up to 3 operating in your area so you can compare quotes on price and fit, never an open auction.
- EWRB registration: Licensed to do electrical work in New Zealand
- Positive customer experiences and real references: Read and checked before they can quote you
- SEANZ or Master Electricians: Backed by an industry body
- 12 months in solar: Solar-specific experience, not just general sparky work
Hawke's Bay solar FAQs
How much does solar cost in Napier or Hastings?
A 6.6kW system in Hawke's Bay typically costs $13,500 to $15,000 fully installed. Coastal Napier homes may need marine-grade mounting hardware, adding a small premium.
What is Unison's export limit?
Unison has allowed up to 10kW of export from a single-phase home on its fast-track application since November 2025, up from its old 5kW cap. Systems above the default are still assessed individually. Most Hawke's Bay family homes find 6.6 to 9kW systems work well, because the rate you avoid paying on power you use yourself is higher than the rate you earn selling it back, so sizing for self-consumption usually beats sizing for maximum export.
Best Hawke's Bay suburbs for solar?
Napier Hill, Havelock North, Taradale, and Hastings central all have strong roof stock with clear orientations. Vineyard properties typically have the most generous roofs and best north-facing aspects.
Best buy-back rate for Hawke's Bay homes?
There is no single best rate, and in Hawke's Bay it is the wrong question to lead with. Retailers set buy-back rates nationally rather than by region, so the published figures are the same here as anywhere else, and most now pay well for a few peak hours and much less across the rest of the day. What is genuinely local is the retail price: Hawke's Bay households pay around 28.6c per kWh, so every unit you use yourself is worth the full 28.6c while every exported unit earns a fraction of that. Shifting the dishwasher, laundry and hot water into the middle of the day is worth more than chasing a slightly better export rate. Our buy-back rates guide has the full comparison.
How long does install take in Napier?
Typical 4 to 6 weeks from quote to switch-on. Unison's DG approval is generally 2 to 3 weeks. Local installers operate primarily out of Napier and Hastings.
How much will a 6.6kW solar system generate in Hawke's Bay?
Around 9,430 kWh a year for a well-oriented, unshaded roof. Hawke's Bay averages 4.3 peak sun hours a day and over 2,100 hours of bright sunshine a year, among the sunniest in the North Island. Output is seasonal: the region averages roughly 245 hours of sunshine in January against about 110 in June, so summer carries most of the annual total. A north-facing plane with clear sky in front of it gets you closest to the 9,430 kWh figure. Shading from mature trees, common on Havelock North and Taradale sections, is the most likely reason a real roof lands below it.
How long until solar pays for itself in Hawke's Bay?
About 7.0 to 7.6 years for a typical 6.6kW system costing around $13,800 installed and saving roughly $1,830 to $1,970 a year. That is among the faster paybacks in the country, and the reason is the power price rather than the weather. At 28.6c per kWh, Hawke's Bay households pay well above the national middle, so every unit of solar you use yourself is worth more here than it would be further south. The sunshine helps too, at over 2,100 hours a year, but the rate is doing most of the work. Shifting hot water, pool pumps and laundry into the middle of the day shortens the payback further.
Is solar worth it in Hawke's Bay compared with other regions?
Yes, and it beats Auckland. A 6.6kW system here generates around 9,430 kWh a year against about 9,180 kWh for the same system in Auckland, and Hawke's Bay households pay 28.6c per kWh for grid power against Auckland's 26.4c. More generation plus a higher rate gives a typical payback of about 7.0 to 7.6 years, quicker than Auckland's 7.7 to 8.3. The honest caveat is that those are figures for a well-oriented, unshaded roof. A south-facing or heavily shaded roof lands well below them, which is why a site assessment on your actual roof matters more than any regional average.
Should I go bigger than 6.6kW in Hawke's Bay, say 10 or 12kW?
Often yes, if you have both the roof and the daytime load. Unison allows a default residential export of up to 10kW, up from the old 5kW cap, so a larger array no longer needs special approval to send surplus to the grid. Systems above the default are assessed individually. The real sizing question is self-consumption: a 6.6kW system makes around 9,430 kWh a year, and at 28.6c per kWh the power you use yourself is worth more than the power you sell back. Vineyards, orchards and lifestyle blocks with pumps and sheds running through the day are the clearest case for going larger.
Do I need building consent for solar in Napier or Hastings?
In most cases no. Since October 2025, most residential rooftop solar installs in New Zealand no longer need building consent, and a standard 6.6kW array on a Napier or Hastings home, around $13,800 installed, generally falls inside that exemption. Your installer still lodges the distributed generation application with Unison, which is generally 2 to 3 weeks, and arranges any meter change. The exemption covers the consent, not the engineering: an unusual roof structure, a very exposed site or a much larger array can still need sign-off. Ask your installer to confirm what applies to your specific roof before you sign anything.
Is solar different in Napier compared with Hastings?
Not in any way that changes the numbers. Napier and Hastings sit on the same Unison network with the same default residential export of up to 10kW, and both average 4.3 peak sun hours a day, so a well-oriented 6.6kW system makes around 9,430 kWh a year in either. The differences are physical. Coastal Napier homes, particularly on and around Napier Hill, should budget a small premium for marine-grade mounting hardware. Hastings, Havelock North and the plains tend to have larger sections and mature trees, so shading is the more common reason a real roof lands below the regional figure. Vineyard and orchard properties across the plains usually have both the roof space and the daytime load to justify going larger than 6.6kW.
How do I apply for solar approval with Unison?
Your installer lodges the distributed generation application with Unison, so you do not deal with the network directly. It needs your address and ICP number (printed on your power bill), the proposed system size and the inverter model, all of which your installer already holds. Approval is generally 2 to 3 weeks, and a typical Napier or Hastings install runs 4 to 6 weeks from quote to switch-on with 1 to 2 days of that on the roof. Because Unison allows a default residential export of up to 10kW, for most homes the application confirms the connection rather than deciding the system size; anything above the default is assessed individually. Your installer also arranges any meter change your retailer needs to make.
Who installs solar panels in Napier and Hastings?
Hawke's Bay is well served: local firms in Napier and Hastings compete with the national installers, so three comparable quotes are easy to collect. Shortlist on SEANZ membership, EWRB-registered electricians, and a written workmanship warranty of at least five years, then compare price per watt rather than the total. Your installer files the distributed generation application with Unison as part of the job, which is the approval behind the 10kW export limit, and coastal Napier homes should ask what corrosion-rated hardware the quote specifies.
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