Solar on a Pakenham rental property.
The honest version. Your tenant gets the bill saving, not you - so the case for solar on a Cardinia Shire investment property has to be built out of the Solar for Rentals rebate, depreciation, and a listing that leases faster than the identical house three doors up.
Say the awkward part out loud first.
Roughly a third of the housing in the Pakenham and Officer growth corridor is rented, and almost every landlord who calls us opens with the same question: does solar pay for itself on an investment property? The answer is that it does not pay for itself the way it does on your own roof, and any installer who tells you otherwise is selling you a story.
Here is why. The tenant holds the retail electricity account. The tenant consumes the free daytime generation and the tenant receives whatever feed-in credit the retailer pays. Every cent of the operating benefit lands on the other side of the lease. Economists call it the split incentive; landlords call it paying for someone else's power bill. It is the single reason rental properties across Cardinia Shire have solar uptake well below the owner-occupier rate on the very same streets.
So the landlord case has to be built from three other things, and they are all real: the rebate stack that cuts your capital outlay, the depreciation treatment of the asset, and vacancy. Get those three right and the numbers work. Pretend the tenant's saving is yours and they never will.
Vacancy is the number that actually moves.
Pakenham, Officer and the newer Cardinia Lakes stages have a genuine oversupply of near-identical four-bedroom houses. A prospective tenant scrolling listings sees the same floorplan, the same render, the same alfresco, over and over. A line in the ad that says "6.6kW solar, low power bills" is one of the very few differentiators available to you that does not involve dropping the rent.
Do the arithmetic on your own property. If your place sits vacant for two weeks a year at $520 a week, that is over $1,000 of lost rent, plus re-letting fees. Cut that to one week and you have recovered a meaningful slice of a system that cost you four or five thousand dollars out of pocket. That is the honest landlord return: not a bill saving, but a shorter vacancy and a tenant who renews.
What a Pakenham rental install actually costs in 2026.
Two rebates apply to a landlord install and they stack. The federal STC discount applies to every eligible system regardless of who lives there - Pakenham sits in solar zone 4 with a 1.382 multiplier, and at an eight-year deeming period and roughly $36 per certificate a 6.6kW system carries about $2,600 of STC discount straight off the gross price. The mechanics of that are set out in full on our STC certificate page.
On top of that, Solar Victoria runs a Solar for Rentals stream under the Solar Homes program aimed specifically at landlords, currently worth up to $1,400 off panels. The conditions are real and they move: there is a cap on the property value, a cap on the weekly rent, the property must not already have solar, and your tenant has to sign an agreement form acknowledging the install. Solar Victoria revises those caps periodically, so we check current eligibility against your actual address and lease before we put a number on a quote rather than promising a rebate you may not get.
Worked example - a Pakenham rental, 2026.
Take a standard two-storey rental on a 400sqm block off Henty Way, Colorbond roof, north-west aspect, single-phase United Energy supply, rented at $520 a week. A 6.6kW Tier-1 array with a Sungrow or Fronius string inverter:
- Gross system price, supplied and installed: about $8,200
- Less federal STC discount (roughly 73 certificates at about $36): about $2,600
- Sub-total after STCs: about $5,600
- Less Solar Victoria Solar for Rentals rebate, if eligible: up to $1,400
- Landlord out-of-pocket: roughly $4,200
Across the corridor a 6.6kW rental install typically lands somewhere between $5,500 and $7,500 after STCs, and near $4,100 to $6,100 once the rental rebate is applied. Roof pitch, tile versus Colorbond, a two-storey lift, switchboard condition and whether the property needs a meter reconfiguration all move the gross figure. See our pricing guide for the full bands.
Do not over-size a rental. On your own roof there is an argument for 10kW or 13.2kW because you will add a battery and an EV later. On a rental you are buying a letting feature and a depreciable asset, and the marginal certificate value of the extra kilowatts goes to a tenant you may never meet. Six-point-six is usually the right answer here. If you want the full system logic, our solar panel installation page covers sizing properly.
Tenants, notice, and getting on the roof.
You need your tenant's cooperation regardless, and under the Solar for Rentals rebate you need their signature on a tenant agreement form, so treat it as a yes you have to earn. Practically, our installers need roof access, switchboard access and a power shutdown of two to four hours on install day. That means proper written notice to enter under the Residential Tenancies Act and a date that suits the household, not a date that suits the crew.
Most tenants say yes immediately - they get a lower bill for free and it costs them a morning. The ones who push back are almost always reacting to poor notice rather than to solar itself, so we work through your agent and give the household a firm arrival window instead of a vague day. If the property has a home-based worker or a shift worker sleeping days, tell us up front and we schedule around it.
The compliance side is identical to an owner-occupier job.
Being a rental changes nothing about the standards. The array goes on to AS/NZS 5033 for PV array installation, the inverter is commissioned to AS/NZS 4777.2:2020 for grid connection, and the wiring is to AS/NZS 3000. The mounting system is engineered for AS/NZS 1170.2 wind region A, which is what Cardinia Shire sits in, and on the older concrete-tile estates around Heritage Springs we use tile-replacement feet rather than hooking over a batten and hoping. Every grid-connected system in this network needs United Energy pre-approval before it is energised, which we lodge - the detail is on our grid connection page.
One thing landlords miss: you inherit the maintenance obligation on a fixture you installed. When that inverter reaches year ten and dies, it is your bill, not the tenant's, and it will be your agent phoning us. That is not an argument against solar - it is an argument for buying a Tier-1 inverter with a real Australian service presence instead of the cheapest unit on the quote. Our inverter failure page explains what happens when the budget brands from a decade ago give up.
Batteries on rentals are a different conversation and usually a no. The federal Cheaper Home Batteries rebate is generous, but the entire benefit of a battery is evening self-consumption, which is squarely the tenant's. If you are living in the property yourself, or planning to move in, then battery storage changes the maths completely and is worth a proper look.
Depreciation, invoices and what your accountant needs.
You cannot claim a rental solar install as a lump-sum deduction in the year you install it. The ATO treats a solar system on an income-producing property as a depreciating asset, written off across its effective life rather than claimed in one hit, and the rebate portion generally reduces the cost base you depreciate. Any repair to an existing system later, such as an inverter replacement, is usually treated differently again.
We are CEC-accredited installers and A-grade electricians, not tax agents. What we do is give you a properly itemised tax invoice showing hardware, labour, STC assignment and rebate as separate lines - which is exactly what your accountant or quantity surveyor needs to build the depreciation schedule - and we leave the treatment to them. Ask your accountant before you sign, not after.
Keep the electrical Certificate of Electrical Safety, the United Energy connection approval and the CEC installer accreditation number with the property file. When you sell, that folder is what proves the system is compliant and warrantable to the buyer's conveyancer, and it is worth real money at that point. We cover that side on our does solar add value before selling page.
Landlord questions we get every week.
Is solar worth it on a Pakenham rental property?
It stacks up differently to an owner-occupied home, and you need to be honest about why. The tenant gets the bill saving, not you, so the return to a landlord comes from three other places: the Solar for Rentals rebate cutting your capital outlay, depreciation on the asset, and a property that leases faster and holds tenants longer in a corridor where every second listing in Officer and Cardinia Lakes looks identical. A 6.6kW system on a Pakenham rental lands around $5,500 to $7,500 after STCs, and after the Solar Victoria rental rebate the out-of-pocket often sits near $4,100 to $6,100. If your property sits vacant for two weeks a year at $520 a week, that is over $1,000 of lost rent - solar is one of the cheaper ways to be the listing that goes first.
Can I get the Solar Victoria Solar for Rentals rebate as a landlord?
Solar Victoria runs a Solar for Rentals stream under the Solar Homes program specifically for landlords, currently worth up to $1,400 off panels, and it stacks with the federal STC discount. The conditions are real and they move: there is a cap on the property value, a cap on the weekly rent, the property must not already have solar, and your tenant has to sign an agreement form acknowledging the install. Solar Victoria revises the value and rent caps periodically, so we check current eligibility against your actual address and lease before we put a number on a quote rather than promising a rebate you may not get.
Who gets the power savings on a rental - me or the tenant?
The tenant, in almost every case. The tenant holds the retail electricity account, so the tenant consumes the free daytime generation and the tenant receives whatever feed-in credit the retailer pays. That is the split-incentive problem and there is no clever way around it that we would put our name to. What you can do legitimately is treat it as a letting feature and price the property accordingly at the next lease renewal, subject to the Residential Tenancies Act rules on rent increases and to any no-increase condition attached to the rebate you claimed. What you should not do is install solar and immediately bump the rent by the value of the saving - that reads badly to a tenant who has to sign your rebate form.
Do I need the tenant's permission to install solar on my rental?
You need their cooperation regardless, and under the Solar for Rentals rebate you need their signature on a tenant agreement form, so treat it as a yes. Practically, our installers need roof access, switchboard access and a power shutdown of two to four hours on install day, which means proper written notice to enter under the Residential Tenancies Act and a date that suits the household. Most tenants say yes immediately because they get a lower bill for free. The ones who push back are usually reacting to poor notice rather than to solar, so we work through your agent and give the household a firm arrival window instead of a vague day.
Can I claim solar as a tax deduction on a Pakenham investment property?
Not as a lump-sum deduction in the year you install it. The ATO treats a solar system on an income-producing property as a depreciating asset, written off across its effective life rather than claimed in one hit, and the rebate portion generally reduces the cost base you depreciate. Any repair to an existing system later, such as an inverter replacement, is usually treated differently again. We are CEC-accredited installers and A-grade electricians, not tax agents, so we give you a properly itemised invoice showing hardware, labour, STC assignment and rebate as separate lines - which is exactly what your accountant needs - and we leave the tax treatment to them.
Rental portfolios we cover.
Free quote for your Pakenham rental.
We check Solar for Rentals eligibility against your actual address and lease, model the STC discount at a fixed dollar figure, coordinate tenant access through your agent, and hand you an itemised invoice your accountant can use. CEC-accredited, A-grade electrical, United Energy approved.