Financial
Green Loans: The Cheapest Money in Australia
Banks are offering 0.99% interest loans for energy upgrades. Here is how to use them for solar, batteries, and double glazing.
Interest rates for mortgages are stabilizing around 5-6%, but there is a secret tier of lending available at under 1%. "Green Loans" are the banking sector's push to decarbonize their mortgage books.
Who is Offering What?
- CommBank: Green Home Offer.
- Brighte: 0% interest payment plans for solar.
- Clean Energy Finance Corp (CEFC): Backing low-rate loans via smaller lenders.
What Can You Buy?
It is not just solar panels. These loans cover:
- Double glazed windows
- Insulation upgrades
- Heat Pump hot water systems
- EV Chargers
If you are planning a renovation in 2026, using a Green Loan instead of a redraw facility could save you thousands in interest repayments.
Why Banks Can Actually Afford the Low Rate
This isn't charity from the banks. Lenders raise some of their own funding by issuing "green bonds" — debt that's earmarked for environmentally beneficial lending and, because demand from ethical investment funds is high, tends to be cheaper for the bank to issue than ordinary debt. That cheaper cost of capital is what gets passed through to you as a lower rate on a green home loan or green personal loan. It's a genuine discount, not a marketing gimmick, provided the loan is structured correctly.
Before You Sign: Check These Three Things
- Is it actually "green," or just badged that way? Some lenders slap a green label on a standard personal loan with only a marginal rate discount. Compare the comparison rate (not the headline rate) against a standard unsecured loan for the same purpose.
- Does the installer need accreditation? CEFC-backed loans typically require the solar or heat pump installer to be Clean Energy Council accredited — using an unaccredited installer can void your eligibility.
- What's the loan term versus the asset's life? A 10-year loan on a hot water system that lasts 12 years is sensible; the same term on something with a shorter usable life erodes the savings.
If you're renovating in 2026, get a green loan quote alongside your normal mortgage redraw quote and compare the total interest cost over the life of the loan, not just the advertised rate.
Checklist for Action
- Audit your current bills: Gather your last 12 months of statements for Financial.
- Compare the market: Use SaveNest's comparison tools to identify the top 3 cheapest providers in your area.
- Check for loyalty taxes: Call your current provider and ask them to match the best offer you found online.
- Verify concessions: Ensure you are receiving all state and federal rebates you are entitled to.
- Set a reminder: Mark your calendar for a 6-month review to ensures you stay on the best plan.
- Share the savings: Tell a friend or family member how much you saved to help them avoid the 'lazy tax' too.
Related Guides
Ready to see how much you could save?
Compare Electricity Plans →
