Is solar actually worth it in Victoria in 2026?
For most Victorian households, yes, but for a narrower reason than it was five years ago. A 6.6kW system typically costs $4,000 to $7,000 after rebates and pays for itself in roughly five to eight years. What decides it is no longer the size of your bill. It is how much of your own generation you use as you make it, because exporting to the grid now pays a small fraction of what buying power back costs.
What changed, and why the old advice is wrong
The case for solar in Victoria used to be simple: put panels on, export what you do not use, and get paid a decent rate for it. That is no longer how the numbers work. Feed-in tariffs have fallen steeply while retail electricity prices have not, and the gap between the two is now the single most important number in your assessment.
When you use a kilowatt-hour as your panels make it, you avoid buying it. That is worth the full retail rate. When you export it instead, you get the feed-in rate. In Victoria today those two numbers are not close to each other, and the difference is most of the reason two households with identical roofs and identical bills get very different answers.
What a system actually costs in Victoria
These are installed prices, before and after the rebates a Victorian owner-occupier can generally claim. They assume a straightforward single-storey install on a tin or tile roof with reasonable access.
| System | Before rebates | After rebates |
|---|---|---|
| 5–6.6kW solar | $7,000 – $9,000 | $4,100 – $6,100 |
| 6.6kW solar | $8,000 – $10,000 | $4,850 – $6,850 |
| 10–13kW solar | $10,000 – $15,000 | $7,800 – $12,800 |
| 6.6kW solar + 10kWh battery | $13,000 – $20,000 | $5,500 – $14,300 |
The spread inside each row is real and worth understanding. The bottom of the range is what a genuinely competitive installer charges for good mid-tier equipment. The top is closer to what you will be quoted by a company with a sales team, a call centre and a marketing budget. Both can be legitimate businesses fitting decent gear. It is the same system.
Payback, honestly
A 6.6kW system on a typical Victorian bill lands somewhere around five to eight years. That range is wide because it moves with three things:
- Occupancy. Home during the day is the strongest position. Out all day and more of your generation exports at the low rate.
- Shading. Heavy shading is the one answer that changes the arithmetic rather than the wording. It can cut output substantially.
- Your actual tariff. A household on a legacy or default retail offer is paying more per unit than one on a competitive plan, which changes both the bill and the value of every unit the panels make.
Anyone quoting you a single payback figure without asking about all three is guessing.
When solar is not worth it in Victoria
It is worth being straight about the cases where the answer is no, or not yet:
- A small bill. Under roughly $300 a quarter, there is not enough spend for the system to claw back inside ten years.
- Heavy, permanent shading from a neighbour's tree or building that will not be removed.
- Moving within a couple of years. Solar adds something to a sale price, but rarely the full install cost, and never predictably.
- A roof due for replacement. Do the roof first. Taking an array off and putting it back costs real money.
Do the free thing first
Before spending anything on hardware, check what you are paying per kilowatt-hour. Households that have never switched retailer are often on a legacy offer well above the best generally available rate in their market. Moving costs nothing, takes an afternoon, and shortens the payback on any system you go on to buy, because every unit the panels offset is worth more.
It is the least exciting advice on this page and the only one that costs you nothing.
See your own Victorian numbers
System size, cost after Victorian rebates, payback and a ten-year projection, built from your bill and your roof. No sales calls.
Check my home, freeCommon questions
Is solar still worth it in Victoria with low feed-in tariffs?
Yes for most households, but the value now comes from self-consumption rather than export. Using a kilowatt-hour as you generate it avoids the full retail rate; exporting it earns the much lower feed-in rate. Households that are home during the day, or that shift heavy loads to the middle of the day, do best.
How long does solar take to pay for itself in Victoria?
Typically five to eight years for a 6.6kW system on an average Victorian bill. The range depends on daytime occupancy, roof shading and the retail rate you are actually paying.
How much does a 6.6kW solar system cost in Victoria?
Roughly $8,000 to $10,000 before rebates, and about $4,850 to $6,850 after the federal STC and Victorian rebates a typical owner-occupier can claim.
Is a battery worth adding in Victoria?
Sometimes, but it almost always pays back more slowly than panels alone. A battery raises how much of your bill disappears and adds blackout cover, at a higher upfront cost. Compare both against each other rather than assuming the bigger system is better.
Do I need to be home during the day for solar to be worth it?
No, but it helps a lot. If you are out all day, more of your generation exports at the low feed-in rate. Timers on the dishwasher, washing machine or hot water, or adding a battery, are the two ways to close that gap.
Last reviewed 27 August 2026. Rebate amounts, feed-in tariffs and retail prices change; figures here are checked against the calculator's own state data, which is published in the methodology.