Solar Panel and Battery Agreements Affecting a Sale

Rooftop solar and home battery systems are now common enough that most conveyancers routinely check for them, but the way a system is financed can vary significantly from one property to the next. Some systems are owned outright by the vendor, some are still being paid off under a finance agreement, and others are supplied under a solar lease or power purchase agreement where a third party retains ownership of the equipment altogether. Each of these arrangements affects a sale differently, and buyers should understand which one applies before assuming the panels or battery on the roof automatically come with the property.

Owned Systems Versus Financed Systems

Where a vendor owns the solar and battery system outright, having paid for it in full, it typically transfers with the property in the same way as any other fixed improvement, with no separate agreement for the buyer to take on. Where the system was purchased using finance, however, there may be a registered security interest over the goods, and the vendor's obligation is to have that finance discharged before or at settlement, in the same way an outstanding mortgage over the land itself must be discharged. Your conveyancer should check the Personal Property Securities Register as part of standard due diligence when a property has solar or battery equipment installed, to confirm no third party holds a registered interest that could survive settlement.

Solar Leases and Power Purchase Agreements

A more complex scenario arises where the solar system is not owned by the vendor at all, but is supplied under a solar lease or a power purchase agreement, sometimes called a PPA, under which a third-party provider owns the panels and the property owner simply pays for the electricity generated or a periodic lease fee. According to the Australian Competition and Consumer Commission's guidance on solar panel systems and home batteries, these agreements typically run for a fixed term of years and are not automatically transferable just because the property changes hands. If a buyer wants to keep the system under an existing agreement, the contract usually needs to be formally assigned to them, with the third-party provider's consent, and reviewed to confirm what fees and conditions apply going forward.

What This Means at Contract Stage

Because these arrangements are not always obvious from a property listing or even a walk-through inspection, it is worth asking directly at the time of making an offer whether any solar or battery system is fully owned, still being financed, or supplied under a lease or power purchase agreement. This is a useful question to raise before signing a contract for a residential purchase or an off-the-plan purchase where solar is included as a standard feature, since terms can differ significantly between individual developments and builders.

Vendor Disclosure Expectations

Vendors selling a property with a financed or leased solar system generally need to disclose the arrangement as part of the sale process and, where relevant, arrange for the finance to be discharged or the agreement to be assigned before settlement. A vendor undertaking a residential sale should raise any existing solar or battery agreement with their conveyancer early, since resolving a third-party consent or discharge can take longer than other routine settlement steps if it is left until the last minute.

Battery Systems and Virtual Power Plants

Home batteries increasingly come with their own separate considerations, particularly where a battery participates in a virtual power plant scheme that shares stored energy back to the grid in exchange for ongoing payments or bill credits. These arrangements are typically governed by a separate agreement with the scheme operator, distinct from any solar lease, and a buyer inheriting the property will usually need to either take over that agreement or exit it, depending on its terms. Ask specifically about any battery-related scheme membership, since it will not necessarily appear in a standard building inspection or contract disclosure.

Warranties, Consumer Guarantees and Ongoing Rights

Even where a system is owned outright, it is worth understanding what warranty coverage transfers with the property. Manufacturer warranties on panels, inverters and batteries are generally tied to the equipment rather than the original purchaser, but the process for making a claim can differ depending on the installer and manufacturer involved, and some warranties require the original proof of purchase or installation certificate to be produced. Separately, Australian consumer guarantee rights apply to solar and battery systems in addition to any manufacturer's warranty, and these guarantee rights cannot be excluded from a contract. Buyers taking on an existing system should ask the vendor to hand over any installation certificates, warranty documents and compliance paperwork at settlement, since replacing lost documentation later can be time consuming.

Property Transfers and Family Arrangements

Even outside a standard sale, a property transfer between family members or as part of an estate can trigger the same questions about who owns the solar and battery equipment attached to the home. Because these agreements are contractual rather than attached to the land itself in the way a registered easement is, they need to be actively identified and addressed rather than assumed to simply travel with the property automatically. This applies equally to a refinancing transaction where a lender may ask questions about fixtures and equipment attached to a property used as security.

What Buyers Should Verify Before Settlement

Before settlement, ask your conveyancer to confirm in writing whether any solar panel or battery system attached to the property is owned outright, subject to finance requiring discharge, or supplied under a lease or power purchase agreement that will need to be assigned or terminated. Getting clarity on this before you exchange contracts avoids an unexpected bill or an unwanted long-term agreement turning up after you have already moved in.