CommBank Green Loan

CommBank's Green Loan products help CommBank customers fund their next sustainable purchase for their homes. The CommBank Green Loan and CommBank Green Home Loan Offer help homeowners install energy-efficient appliances including solar panels, batteries, heat pump hot water systems, efficient heating and cooling systems, induction cooktops, and more. Installing energy-efficient technologies enables Commbank customers to save money, add value to their property, and protect themselves against rising energy costs.

Why We Love the CommBank Green Loan
At 28Watt, we’re passionate about helping homeowners take control of their energy use and lower their bills. The CommBank Green Loan is a great way for any eligible Commbank customers ready to start saving money on their energy bills. With a super-low interest rate, no hidden fees, and flexible repayment terms, it’s the ideal way to fund impactful upgrades without breaking the bank.
But here’s the key: To make the most of this loan, it’s important to know which upgrades will deliver you the biggest savings—and in what order. That’s where the 28Watt Free Home Assessment comes in.
Unlock the savings potential of your home with 28Watt’s Free Home Assessment
We understand that navigating energy-efficient upgrades can feel overwhelming. Which product should you prioritise? How much will it cost? What will it save you? Our Free Home Assessment answers these questions, providing a clear roadmap tailored to your home. Here’s what you’ll get:
-
A personalised plan: Learn which improvements—like solar panels, solar battery systems, or heat pumps—will save you the most money.
-
Clear cost estimates: Understand the upfront and long-term savings potential for each upgrade.
-
Trusted installers: We’ll connect you with accredited and experienced installers who meet the Commbank Green Loan eligibility requirements.
By completing our Free Home Assessment, you’ll be equipped to maximise the value of your CommBank Green Loan and start your journey towards an electrified and efficient home.
Start your free home assessment

What can I buy with a Commbank Green Loan?
- Solar Panels (6kW or more)
- Solar Battery (5kWh or more)
- Solar/Heat Pump Hot Water Systems (250L or more)
- Electric Vehicle Charging Stations
- Gas-to-Electric Cooking Equipment
- Smart Home Products
- LED Lighting Upgrades

What Makes the Commbank Green Loan and 28Watt the Perfect Pair?
- No surprise costs: The CommBank Green Loan features zero establishment fees, no ongoing service fees, and no penalties for early repayment.
- Expert advice: Our Free Home Assessment ensures that every dollar of your loan works as hard as possible for your home and your wallet.
- Big savings, low repayments: With 10 years to repay, you can save big on your future energy bills, with a simple, small monthly repayment.
Handy tip!
All installations must be carried out by accredited installers, ensuring the highest standards of quality and safety. Through 28Watt, we’ll connect you with trusted professionals so you can stress less and enjoy your savings.

What you need to qualify for the CommBank Green Loan
- A CommBank home loan balance of $150,000 or more.
- The Green Loan must be secured against the same home.
- A Loan to Value ratio not exceeding 80% (incl. the new loan).
How to Get Started
-
Complete Your Free Home Assessment: This is the essential first step. We’ll help you determine the best upgrades for your home, give you a preliminary quote, and connect you with approved installers.
-
Confirm Your Quote: If you’re happy with your savings estimate, your installer will visit your home to finalise your quote.
-
Send Your Quote to Commbank: Share the quote with CommBank and they’ll let you know when your new CommBank Green Loan is approved. Let us know once you’ve received confirmation.
-
Installation: Your installer will visit your home on the agreed upon date to complete the installation.
- Payment: Provide the final invoice to Commbank who will make payment on your behalf. You’ll be able to see your CommBank Green Loan in NetBank and the CommBank app.
28Watt's Takeaway
CommBank has pioneered Green Loans in Australia, offering a Green Loan since 2021. As Green Loans become increasingly popular, CommBank's Green Loan offer remains one of the most competitive in the market at an appealing low interest rate of 3.99% (comparison rate 3.99%) with an extensive 'eligible technology' list. Although this CommBank Green Loan is only available to CommBank mortgage holders, as of 2025 they hold 26% of all mortgages in Australia. Therefore, their Green Loan is available to many Australian homeowners.
You may have noticed their comparison rate is the same as their headline interest rate, which means no fees! Until May 30th, 2025, there are no establishment fees, no monthly service fees, and the early repayment adjustment fee is also waived. If you've been thinking of upgrading your home with energy-efficient technologies to enjoy all of the benefits that come along with it, the CommBank Green Loan offer is currently an excellent choice.
At 28Watt, we’re here to make home electrification simple, affordable, and effective. The CommBank Green Loan is a fantastic tool for CommBank mortgage holders, but if that's not you - check out some alternatives below.
- ING Green Upgrade Loan
- Westpac Green Loan
- Community First Green Loan
- Bank Australia Clean Energy Home Loan 'Renovate'
- Plenti Green Loan
Not sure which technologies will save you the most or what fits within your budget? Complete your Free Home Assessment today and see how 28Watt can help you unlock the full potential of your biggest asset.
Start your free home assessment