Is your solar quote fair? Check it in two minutes
Aussie Solar Info · Ranges from this site's own calculator, 2026-10-27
A fair quote sits inside a range, not on a single number. In Victoria, on this site's calculator, a 6.6kW solar system comes to about $4,850 to $6,850 after rebates, a 10kWh battery added to existing solar $5,130 to $10,980, and the two together $6,430 to $14,330. The low end is what a competitive installer charges; the high end is what a poor quote looks like. Enter yours below to see where it sits.
Check your quote
The five things to find on your quote
Before you compare prices, check that each quote names the same things. If one leaves any of these out, the prices are not comparable yet.
- Panels: the brand, the model, how many, and the total size in kW.
- Inverter: the brand, the model and its size in kW, and whether it is a hybrid that can take a battery.
- Battery: the model and its usable capacity in kWh, not just the nominal figure.
- What is included: switchboard work, monitoring, backup circuits, and any roof or access costs.
- The price before and after each rebate, itemised, so you can see which discounts have actually been applied.
What legitimately changes the price
- Brand tier. On this site's pricing, mid-tier batteries cost about 10% more than value tier for the same capacity, and premium about 15% more. The checker's battery ranges are value tier, so a premium brand can sit a little above them and still be fair.
- Three-phase power, switchboard upgrades and backup circuits. Each is real work, and each should be its own line on the quote.
- Difficult roofs: height, tiles, or a split array across several faces.
- Who does the work. An installer with its own crews and a long track record can reasonably charge more than one that subcontracts everything.
Why two quotes for the same system can differ by thousands
Much of the gap is not hardware. It is overheads, how full the installer's diary is that month, and what the person quoting thinks you will accept. The homepage shows one house that was quoted for the same brand of battery from $17,300 to $33,000. When the equipment, the capacity and the work included are the same, the difference is negotiable.
Red flags
- A loan presented as a rebate. A rebate comes off the price; a loan is repaid.
- A battery quoted without its usable capacity, or a "bonus module" presented as free. Compare the total price per usable kWh instead.
- Savings worked out on the assumption that you use most of your solar during the day, when you are out at work.
- A deadline: "the rebate ends Friday". Check the official program page before you sign.
- No model numbers, only brands.
Compare two quotes side by side
| Check | Quote A | Quote B |
|---|---|---|
| Panel model, count and total kW | ||
| Inverter model and kW (hybrid?) | ||
| Battery model and usable kWh | ||
| Switchboard, monitoring, backup included? | ||
| Price before rebates | ||
| Rebates applied, itemised | ||
| Price after rebates | ||
| Price per usable kWh of battery | ||
| Warranty: panels, inverter, battery, workmanship |
Want a second opinion?
Send me the quote and I will read it line by line, the way I read the one in How I read a solar quote, and tell you which items carry the difference and what the number should be.
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Common questions
Is the cheapest solar quote the best one?
Not necessarily. A price below the low end of the fair range usually means something is missing from the quote, such as a switchboard upgrade, monitoring, or a smaller battery than you think. Check that both quotes cover the same equipment and work before comparing prices.
Why do two quotes for the same system differ by thousands?
Some of the difference is legitimate: brand tier, three-phase work, switchboard upgrades, roof access and backup circuits. Some is not: overheads, how busy the installer is, and what the salesperson thinks you will accept. The checker shows where a price sits against the range for your state.
Does the fair range include rebates?
The checker shows both. Pick whether the price on your quote is before or after rebates. The after-rebate range assumes you qualify for every rebate it lists for your state; if you do not, compare against the before-rebate range.
Sources and method
Fair ranges are the calculator's own installed prices and rebates, the same figures the free assessment uses; see how the calculator works. The federal battery discount follows the Clean Energy Regulator's Cheaper Home Batteries Program (6.8 certificates per usable kWh to December 2026, 5.7 from January 2027). Solar Victoria publishes its own checklist of what to look for in a solar quote.