By Jeremy, Founder of Australian Battery Quotes
Quick answer: Most Australian homeowners combine several battery finance options: the federal Cheaper Home Batteries Program discount applied at the point of sale, a state interest free loan where one is available (NSW and WA currently offer these), and, for the remaining balance, either an interest free instalment plan through an installer or a green personal loan from a bank. Comparing quotes side by side is the easiest way to see which combination actually reduces your total cost.
A solar battery is a significant purchase, and working out how to pay for one is often the part homeowners get stuck on. The good news is that battery finance options in Australia have expanded a lot over the past year. Between the federal rebate, a handful of state government loans, buy now pay later style instalment plans and dedicated green loans from banks, there is more than one path to spreading the cost of a battery without paying the full amount upfront. This guide walks through each option honestly, including where they genuinely stack and where they do not, so you can work out a realistic plan before you request quotes.
None of this is financial advice. Interest rates, loan caps and eligibility rules change, and the right combination depends on your income, your state and your existing debts, so treat the figures below as a starting point for your own research rather than a final answer.
The Federal Rebate Comes First, Not Last
Before looking at any loan or payment plan, it helps to understand that the federal Cheaper Home Batteries Program is not something you apply for separately. It is a point of sale discount, meaning your installer applies it to the quoted price before you pay anything. As at August 2026 the discount is worth $251.60 per usable kilowatt hour for the first 14kWh of a battery, tapering to a smaller amount for the next 14kWh and a smaller amount again beyond that. In practice this works out to roughly a 30 per cent discount off the pre-rebate cost for a typical household sized battery. The program is funded through to 2030, so it is not a limited time offer you need to rush into, though the exact per kWh figure can change over time as it has since the program began.
This matters for financing because the rebate reduces the amount you actually need to borrow or pay off. Any loan or payment plan you take out should be sized against the post-rebate price, not the sticker price your installer might show you first.
State Interest Free Loans: Where They Exist
A small number of states currently offer their own interest free loans that can be used alongside the federal rebate. These are genuinely free of interest, but not available everywhere, and eligibility rules (income caps, owner occupier requirements, sometimes a requirement to join a virtual power plant) apply.
New South Wales runs the Home Energy Saver Program, offering eligible households up to $15,000 in interest free loans repayable over as long as 10 years, usable for solar, batteries, EV chargers and other eligible upgrades, alongside the federal rebate rather than instead of it.
Western Australia runs its own Residential Battery Scheme, combining a state rebate (up to $1,300 for Synergy customers or up to $3,800 for Horizon Power customers, based on usable capacity) with a separate no-interest loan of up to $10,000, again on top of the federal rebate. Participation in a virtual power plant is generally required.
If you are not in NSW or WA, do not assume there is nothing available. State and territory programs change reasonably often, so check your own state’s energy department page before you request quotes.
Buy Now Pay Later and Instalment Plans
Most established solar and battery installers can offer a payment plan through a third party finance provider at the quote stage, rather than requiring the full balance upfront. Providers such as Brighte, Plenti and Humm are commonly used across the industry. Terms vary, but as a general shape, many offer a genuinely interest free period on shorter plans (commonly in the order of 12 to 24 months), with longer plans running out to several years and typically carrying interest once that window ends. Ask your installer exactly which provider and plan they offer rather than assuming all “interest free” plans work the same way.
The appeal is convenience: it is arranged through the same quote process as the battery itself, with no separate bank application. The trade off is that missing a repayment on some plans can trigger back dated interest, so read the terms before signing.
Green Personal Loans from Banks
If you would rather borrow from your own bank or a mutual, a growing number of lenders offer a discounted “green loan” for solar, batteries and other eligible energy upgrades. As at 2026, green loan rates from major banks and mutuals commonly run in the order of 5.5 per cent to 9 per cent, versus roughly 8 per cent to 12 per cent for a standard unsecured personal loan, a gap that can add up on a purchase this size.
Green loans are usually unsecured and most allow flexible terms of one to 10 years. Approval and rate depend on your credit history and income, so it is worth getting a quote from your own bank as a comparison point even if you are also considering an installer’s payment plan.
Comparing the Main Options
| Finance option | Typical interest rate | Typical term | Best suited to |
|---|---|---|---|
| Federal rebate (Cheaper Home Batteries Program) | Not a loan, a point of sale discount | Applied once, at purchase | Every eligible household, applied automatically by the installer |
| State interest free loan (where available, e.g. NSW, WA) | 0% | Up to 10 years | Homeowners in an eligible state who meet income and other criteria |
| Installer BNPL or instalment plan | Often 0% for an introductory period, interest after | Commonly 12 months to several years | Households wanting a fast, no separate application process |
| Green personal loan (bank or mutual) | Roughly 5.5% to 9% indicatively | 1 to 10 years | Households with good credit wanting a fixed, predictable repayment outside the installer relationship |
Figures above are general indications only, verified as at 13 August 2026, and will vary by lender, state and individual circumstances. Always confirm current rates and terms directly with the provider before committing.
Working Out What You Actually Need to Finance
The most common mistake is financing the pre-rebate price rather than the post-rebate one. Before comparing loan or payment plan options, get a clear, written quote that already shows the federal rebate applied, and any state rebate if you are eligible. The battery calculator is a useful starting point for estimating the battery size your household actually needs, since financing a bigger battery than you need is one of the more expensive mistakes homeowners make. Our battery buying guide covers sizing and system choices in more depth if you are still working out what to buy before you work out how to pay for it.
Get Free, Independent Quotes Before You Finance Anything
Financing decisions are much easier once you have real numbers in front of you. Australian Battery Quotes is a free, no obligation service that matches you with up to three CEC and SAA accredited installers, so you can compare pricing, inclusions and finance options side by side rather than relying on a single installer’s numbers. Request your free quotes and ask each installer directly which finance providers they work with and what the current rates and terms are, since these details change more often than most guides can keep up with.
Frequently Asked Questions
Can I use a state loan and the federal rebate at the same time?
Generally yes, where a state loan program exists (such as NSW’s Home Energy Saver Program or WA’s Residential Battery Scheme), it is designed to work alongside the federal rebate rather than instead of it. The federal rebate reduces the purchase price first, and the state loan can then help finance the remaining balance. Always confirm current stacking rules directly with the relevant state program, since eligibility criteria can change.
Is a battery still worth financing if I am not eligible for a state loan?
Many households outside NSW and WA still finance a battery using either an installer payment plan or a green personal loan, both of which are available regardless of your state. The federal rebate applies nationally, so every eligible household still benefits from that discount before any financing is arranged.
Will financing a battery affect my ability to get a home loan or other credit later?
Any loan or BNPL arrangement can appear on your credit file and may be considered by future lenders, similar to any other form of credit. This is a genuine consideration worth discussing with your own bank or a financial adviser rather than assuming it will not matter, since Australian Battery Quotes is not a financial adviser and cannot give personal financial advice.
Do installers charge more if I use their payment plan instead of paying upfront?
This varies by installer and provider, and it is a fair question to ask directly when comparing quotes. Some finance providers charge the installer a merchant fee, which can occasionally be reflected in the price. Comparing multiple quotes, with and without finance, is the most reliable way to see whether this applies in your case.
How do I know which finance option will actually cost me the least?
It depends on the interest rate, the term and whether you would pay the balance off early. As a general principle, a genuinely interest free option (a state loan or an interest free BNPL period) will almost always cost less than an interest bearing loan of the same term, provided you keep up with repayments, since missing repayments on some BNPL plans can trigger back dated interest.
Final Thoughts
There is no single “best” way to finance a solar battery in Australia. The federal rebate should always be the starting point, since it reduces the amount you need to finance before any loan or payment plan comes into play. From there, a state interest free loan is usually the cheapest option if you are eligible, followed by an installer’s interest free instalment period, with a green personal loan as a solid fallback if neither of those fits your situation. The best way to see how these options compare for your own household is to get quotes from more than one installer and ask each one directly about their finance offering. Compare up to three free, no obligation battery quotes through Australian Battery Quotes and ask each installer what finance options they currently offer.