01
JA Solar panels for reliability
Tier 1, 510W JA Solar modules, specified for long-term reliability and warranty depth, not margin.
Your power. Your choice. Your future.
Quality solar packages for New Zealand homes. JA Solar panels and Sigenergy inverters, fully installed by our Auckland-based team.
PanelsJA Solar 510W
InvertersSigenergy
Warranty10 years
FinanceFrom 0%
(01) — Why choose WatthausSmarter, sustainable homes
Not just solar. Smarter homes.
We bring a commercial-grade mindset to every residential project: bankable hardware, honest modelling and a team that puts quality first.
02
Sigenergy inverters for efficiency
Sigenergy controllers and SigenStor batteries for efficiency, backup resilience and time-of-use optimisation.
03
Fully customisable for your lifestyle
Modelled for your roof, orientation and usage, including future EV charging. No templates, and no upselling hardware you don't need.
(02) — Savings calculatorIndicative · Auckland yield
What could the sun save you?
Slide to your average monthly power bill. We'll match a package and show an indicative yearly saving, based on real Auckland production.
Average monthly power bill
$100$450$800+
Add a battery?
Every package includes
- CEC-certified install
- Commissioning
- Performance monitoring
- 10-year workmanship warranty
Indicative only. Assumes $0.33/kWh import, $0.12/kWh export and 1,360 kWh per kWp per year (our Auckland Residence result). Your fixed quote follows a free site assessment.
Recommended package
Get this plan
Bright Start
Est. yearly saving
$0
About per month
$0
Generation
0kWh/yr
CO₂ avoided
0t/yr
Share of your bill covered
0%
(03) — Solar packagesFully installed · CEC-certified
Four packages. One standard.
All packages include commissioning, performance monitoring and a 10-year workmanship warranty. Pricing is GST-inclusive and confirmed after your site assessment.
Grid-tie8.16 kWp
Bright Start
Package 0116JA Solar panels
510WPer panel, Tier 1
5kWSigenergy controller
- 5kW Sigenergy Controller & Gateway
- Ideal for smaller households and daytime use
- Battery-ready, so you can add storage later
Get this plan Enquire for pricing
Most generation15.3 kWp
Bright Boost
Package 0230JA Solar panels
510WPer panel, Tier 1
10kWSigenergy controller
- 10kW Sigenergy Controller & Gateway
- Built for larger homes, heat pumps and EVs
- Battery-ready, so you can add storage later
Get this plan Enquire for pricing
Hybrid + battery8.16 kWp · 6 kWh
Sunny Reserve
Package 0316JA Solar panels
5kWSigenergy controller
6kWhSigenStor battery
- Store daytime sun for the evening peak
- Time-of-use optimisation through the Sigen app
- Backup-ready for grid outages
Get this plan Enquire for pricing
Most independence15.3 kWp · 10 kWh
Sunny Reserve Plus
Package 0430JA Solar panels
10kWSigenergy controller
10kWhSigenStor battery
- Maximum self-consumption, day and night
- Whole-home resilience during outages
- Expandable SigenStor stack
Get this plan Enquire for pricing
(04) — Hardware we trustJA Solar · Sigenergy
SigenStor 5-in-1Battery-first thinking.
The JA Solar JAM54D40 series and the Sigenergy SigenStor platform are specified for long-term reliability and warranty depth. SigenStor combines inverter, battery and energy management in one stack, so you can store your midday sun, run the house through the evening peak and ride through outages.
Panels
JA Solar 510W, Tier 1
Inverters
Sigenergy controllers
Battery
SigenStor, expandable
Monitoring
Sigen app, real time
Manufacturer warranties of 10–25 years, plus our own 10-year workmanship guarantee.
(05) — How it worksGet a custom quote
From enquiry to energised.
Tell us about your home and we'll model your savings and send you a fixed quote. You'll know exactly what you're getting before anything goes on your roof.
01
Site assessment
Your roof, switchboard and power usage, in person or from aerial imagery first.
02
Tailored design
A system modelled for your roof planes and usage, with a fixed quote and realistic ROI.
03
Professional install
CEC-certified installers, a site-specific safety plan and a clean, respectful site.
04
Long-term monitoring
Live data in the Sigen app, plus annual performance reviews from commissioning day.
(06) — Make it affordablePartner banks & programmes
Flexible finance, simple ownership.
We've partnered with trusted finance providers and New Zealand's leading banks so you can go solar with zero upfront stress.
01
Pay as you save
No upfront payment required. Your solar savings cover the repayments, so you benefit from day one.
02
Low-interest plans
Spread payments over 3–5 years at preferential rates through partner banks and green finance programmes.
03
Full ownership
Pay upfront and own your system outright from day one, for maximum lifetime savings and no ongoing obligations.
Partner banks & programmesSix options
Greater Choices Home Loan
Interest free for 5 yearsUp to $50k
Good Energy Home Loan
1% p.a. for 3 yearsUp to $80k
Better Homes Top Up
3-year fixed rateUp to $80k
Green Home Loan Top-Ups
1% p.a. for 3 yearsUp to $80k
Q Card
Interest Free Finance
36 months interest-free · 0800 786 797Over $1k
Sustainable Energy Loan
4-year termUp to $20k
Finance is provided by the lenders above, subject to their lending criteria, terms and fees. Check current rates with each provider.
(07) — Important informationTransparent pricing
Things to know before you book.
“Our goal is to make sure there are no surprises, only clean, affordable energy.” Read through exactly what's included.
01Offer details
- Offers apply exclusively to our Bright Start, Bright Boost, Bright Max, Sunny Reserve and Sunny Reserve Plus packages, for residential properties only.
- All prices are GST-inclusive. Offers cannot be combined with any other promotions or discounts.
- All installations are subject to Watthaus Strategy's standard Terms of Service.
- If additional work or costs are identified after the site assessment, a customised quote is provided for your approval before any work begins.
- Timeframes may vary with product availability, site conditions and local council approvals (where applicable).
02Roof requirements
Roof pitch
Standard pricing covers roofs with a pitch of up to 25°. Steeper roofs may need tailored mounting and additional safety and labour charges.
Roof type
Prices are based on corrugated iron roofs. Tile, decramastic or membrane roofs may need special mounting systems or extra labour.
Scaffolding
If scaffolding is required, it's charged as an additional cost after the initial site inspection, with a clear breakdown before installation.
03Switchboard & cabling
- Standard pricing includes a maximum 5-metre cable run from the switchboard to the inverter or battery.
- If your switchboard doesn't meet current safety standards, upgrades may be required, especially for whole-home backup in hybrid systems.
- Extra cabling, trenching or protective conduit runs (if required) are quoted separately.
- All wiring and components are installed in accordance with New Zealand regulations, for long-term reliability.