Finance your upgrade
Go solar with $0 upfront
A green loan is a low or zero-interest loan for energy-efficient upgrades, typically accessed as a top-up on your existing mortgage. Most major NZ banks offer up to $80,000 at 0% interest for solar, batteries and EV chargers.
Bank comparison
What each bank offers
Current green loan terms from the major banks. Check with your bank for eligibility, as terms change and usually require an existing home loan.
| Bank | Maximum | Interest rate | Term |
|---|---|---|---|
| ASB | $80,000 | 0% | 3 years |
| BNZ | $80,000 | 0% | 3 years |
| Westpac | $50,000 | 0% | 5 years |
| ANZ | $80,000 | 1% | 3 years |
| Kiwibank | Varies | Sustainable Energy Loan with up to $2,000 contribution over 4 years | |
How it works
Four steps to funded solar
Ask your bank
Contact your home loan provider and ask about their green or sustainable energy loan.
Get your quote
We provide a solar quote and system design from a SEANZ member installer, which banks require.
Apply
Submit the application with your quote documentation. Approval usually runs through your existing lender.
Install & save
On approval we install, and the bill savings start offsetting your repayments from day one.
Why it stacks up
Savings that can outrun the repayments
With a typical Auckland home saving $2,500 to $4,000 a year on power, a 0% loan means the system can effectively pay for itself while you pay it off.
- No big upfront outlay: the loan covers panels, batteries, chargers and installation.
- 0% or near-0% interest against upgrades that immediately cut your outgoings.
- Simple application through the bank that already holds your mortgage.
- Covers the full energy stack: solar, Tesla Powerwall, Evnex chargers, heat pumps and insulation.
Want a quote your bank will accept?
As a SEANZ member installer, our system designs and quotes meet green loan application requirements. We will prepare everything you need.