0% and 1% Green Loans for Solar in NZ: November 2026 Guide

Last checked: 3 November 2026. Rates and conditions change, so always confirm with your bank.

There is no government cash grant for home solar in New Zealand right now. But all of the big banks will lend you money for solar panels and batteries at 0% to 1% interest, usually as a top-up on your home loan. Here is how the offers compare.

Green home loans from the major banks

• Westpac Greater Choices Home Loan: 0% interest for 5 years. Borrow up to $50,000, fully repaid over 5 years. Requires an existing Westpac home loan.

• ANZ Good Energy Home Loan: 1% fixed for 3 years. Borrow $3,000 to $80,000. Reverts to the standard floating rate after 3 years. Requires an existing ANZ home loan.

• ASB Better Homes Top Up: 1% fixed for 3 years. Borrow up to $80,000. Reverts to the standard variable rate after 3 years. Requires an existing ASB home loan.

• BNZ Better Future Home Loan Top Up: 1% fixed for up to 3 years. Borrow up to $80,000 (lifetime limit). Reverts to standard home loan rates afterwards. Requires an existing BNZ home loan.

• Kiwibank Sustainable Energy Loan: no 0 to 1% rate. Instead it is a variable-rate loan over 7 to 10 years, and Kiwibank pays a cash contribution of up to $2,000 spread over four years.

For farms: ASB SMART Solar Loan

ASB offers 0% interest fixed for 5 years on up to $150,000 for eligible on-farm solar. If you are a farming customer, this is one of the best deals available for a milking shed, pumps or workshop system.

What you usually need

• Your home loan with that bank (most offers are mortgage top-ups).

• About 20% equity in your property.

• A written quote from a qualified installer. We can provide this for free.

• To meet the bank's normal lending criteria. After the fixed period ends, the rate goes back to the bank's standard rate.

No home loan? Other options

• Avanti Finance (our finance partner): personal loans from 14.95% p.a. (range 14.95% to 27.95%, October 2026), terms up to 5 years. No home loan needed. Fees and lending criteria apply.

• Add it to your mortgage at your normal home loan rate over a longer term, for the lowest repayments.

• Some solar companies advertise their own 0% or interest-free finance. Read the fine print: the cost is often built into the system price, so compare the total amount you will pay.

How much would it cost per week?

Try our Finance Calculator to see weekly, fortnightly or monthly repayments for each Wild Ox package with a green loan, Avanti Finance or your mortgage, and compare them with your current power bill.

How Wild Ox Energy can help

We will give you a free, detailed written quote that you can take to your bank, and we can talk you through which option makes sense for your situation. Get a free quote or call us on 022 103 5002.

This is general information, not financial advice. Interest rates, terms and approval are set by each lender and depend on your circumstances. Sources: EECA (Understand home energy loans, June 2026), bank websites, ASB, Kiwibank.