Looking to finance your solar panel system through Kiwibank? The Kiwibank Sustainable Energy Loan lets existing home loan customers borrow up to $80,000 for solar panels, batteries, heat pumps, and other clean energy upgrades — added straight to your mortgage.
John walks you through the payback cashflow calculations so you can see exactly how the numbers stack up:
As a SEANZ-approved installer with over 22 years of experience and 8,000+ installations across New Zealand, Sunshine Solar can provide the quote you need to apply.
Key Takeaway
Kiwibank’s Sustainable Energy Loan lets you add up to $80,000 to your existing home loan for solar and battery systems. You’ll pay their standard floating home loan rate — and your solar savings can offset the repayments from day one.
What Is the Kiwibank Sustainable Energy Loan?
The Kiwibank Sustainable Energy Loan is a top-up to your existing Kiwibank home loan, specifically designed for sustainable energy improvements. Rather than taking out a separate personal loan at a higher interest rate, you borrow against your mortgage at the standard floating home loan rate.
Eligible upgrades include:
- Solar panel systems — residential and commercial
- Solar batteries — home battery storage
- Heat pumps — for hot water and space heating
- Electric vehicle chargers
- Insulation and double glazing
This makes it one of the most accessible financing options for Kiwi homeowners already banking with Kiwibank. For a full comparison of what each bank offers, see our guide to NZ’s top 4 banks and their solar loans.
How Much Can You Borrow?
$80,000
Maximum Loan
Floating
Home Loan Rate
30 years
Max Term
Because the loan sits within your mortgage, repayments are spread over a longer period than a typical personal loan. This keeps your fortnightly or monthly payments low — and in many cases, the electricity savings from your solar system will cover most or all of the repayment.
Who Is Eligible for the Kiwibank Sustainable Energy Loan?
To qualify, you need to:
- Be an existing Kiwibank home loan customer — this is a top-up facility, not a standalone loan
- Have sufficient equity in your property to cover the additional borrowing
- Provide a quote from an approved installer for the work — Sunshine Solar can supply this
- Meet Kiwibank’s standard lending criteria — including affordability and credit checks
If you are not currently with Kiwibank, it may be worth exploring other options. Our comprehensive guide to sustainable energy loans in New Zealand covers offerings from all the major banks.
How Do the Repayments Compare to Solar Savings?
This is where it gets interesting. A typical Christchurch household installing a 6.6kW solar system can save between $1,800 and $2,500 per year on electricity. When you finance that system through your mortgage at the floating rate, your repayments are often less than your power bill savings — meaning solar is cashflow-positive from the start.
The Cashflow Advantage
Spreading the cost over your mortgage term means lower periodic repayments. Combined with electricity savings and the buyback credits you earn from exporting surplus power, many homeowners find their solar system pays for itself while they are still repaying the loan.
How Do You Apply?
The process is straightforward:
- Get a solar quote — request your free quote from Sunshine Solar
- Contact Kiwibank — speak to your home loan manager about a sustainable energy top-up
- Submit your quote — Kiwibank will review and approve the additional borrowing
- Installation begins — once approved, we handle everything from design to commissioning
The entire process typically takes two to three weeks from quote to approval, and our team will help you with any documentation Kiwibank requires.
Why Choose Sunshine Solar for Your Installation?
Since 2004, we have completed over 8,000 installations across Canterbury and New Zealand. As a SEANZ member, our quotes are accepted by all major banks for their sustainable energy lending programmes. We handle the paperwork, the design, and the installation — so you can focus on enjoying lower power bills.
Whether you are financing through Kiwibank, another bank, or paying outright, the first step is always the same:
No obligation. We will design a system tailored to your home and provide the quote you need for your Kiwibank application.