The short answer for 2026: a standard 6.6kW rooftop system in Queensland costs roughly $5,000 to $9,000 installed once the federal STC discount is taken off, and the main rebates you can count on are federal, not state. Queensland has no broad cash rebate on panels right now, so your savings come from the national STC scheme on the panels and the Cheaper Home Batteries Program on storage.
That is the headline. The detail is where Queensland gets interesting, because this is the most solar-saturated grid in the country, and that changes what your panels are worth once they are on the roof.
What solar costs in Queensland in 2026
Hardware prices in Queensland track the national market, so the ranges below are the ones quoted across the eastern states. They were last checked June 2026 and, like everything here, they move.
The federal STC rebate is the reason any of this is affordable. It is a point-of-sale discount: your accredited installer creates the certificates your system earns and knocks the value off the invoice, so the quoted price should already include it. No form, no waiting for a cheque. Queensland sits in a sunny certificate zone, so the same panels earn a slightly larger STC discount in Townsville than in Hobart.
| System or item | Indicative cost after rebate (QLD, 2026) | Notes |
|---|---|---|
| 6.6kW panel system | $5,000 to $9,000 | After the federal STC discount, applied at point of sale |
| 10kWh home battery | $6,500 to $9,500 | After the federal Cheaper Home Batteries discount |
| STC discount on 6.6kW | around $2,200 to $2,800 | Built into the panel price above, not paid separately |
The wide bands are not hedging for its own sake. The gap between $5,000 and $9,000 on the same nominal system size is real: panel and inverter brand, roof complexity, whether you need switchboard or meter work, and how hungry your installer is that month. Treat any single advertised figure with suspicion and get three quotes. We cover the national numbers in our guide to solar panel costs in Australia.
The rebates that actually apply
There are two federal programs doing the heavy lifting in Queensland, and one state question mark.
The STC rebate on panels has run since 2011 and is the discount described above. The wrinkle is that it shrinks a little every year and is legislated to phase out by 2030, so the discount you get in 2026 is larger than the one you will get in 2028. Waiting does not make this cheaper.
The Cheaper Home Batteries Program is the newer one, live nationally since 1 July 2025. It takes roughly 30 per cent off the installed price of an eligible home battery, worth on the order of $330 per kilowatt-hour of capacity in 2025, through the same certificate plumbing as the panel rebate. Like the STC scheme, it is designed to wind down toward 2030. That is what turns a 10kWh battery into something closer to the $6,500 to $9,500 band above.
The reliable rebates in Queensland are federal. Treat any state battery offer as a bonus you confirm is open, not a discount you bank in advance.
Is there a Queensland state rebate?
This is where you need to be careful, because the answer changes. As things stand, Queensland does not run a broad state cash rebate on solar panels, so households rely on the federal STC and battery programs above.
On batteries, Queensland ran a Battery Booster rebate as a limited pilot in 2024. It was popular, heavily subscribed, and the funded rounds did not stay open indefinitely. So the honest position for 2026 is this: do not assume a state battery rebate is open, and do not let a salesperson claim one without proof. Check with the Queensland Government and your installer before you sign, and if support is open, treat it as a bonus on top of the federal rebate rather than the thing that makes the deal work. For the national picture, see our rundown of solar rebates across Australia.
Ergon versus south-east Queensland feed-in
Here is the part unique to Queensland, and the part most likely to disappoint anyone expecting solar to pay handsomely for exports.
A feed-in tariff is what your retailer credits you for the power your panels send back to the grid rather than use at home. Across Australia these have collapsed to a few cents per kilowatt-hour, a long way from the generous rates of a decade ago. Queensland then splits in two:
- Regional Queensland (Ergon territory) has a regulated feed-in tariff. On Ergon’s standard offer outside the south-east, the rate is set each year by the state’s pricing regulator rather than left to the market.
- South-east Queensland is a competitive retail market, so retailers set their own feed-in tariffs. These have fallen to low single digits per kilowatt-hour, often with caps or conditions, so read the energy plan rather than the billboard.
Either way the lesson is the same: in 2026 you make money from solar by using the power you generate, not exporting it. A few cents back for exports does not move the needle. Self-consumption, plus a battery to shift cheap daytime generation into expensive evenings, is where the return now lives. We dig into the mechanics in our explainer on solar feed-in tariffs in Australia.
High penetration, and what it does to your exports
Queensland has some of the highest rooftop solar penetration in the world and plenty of sun to drive it. That is a great thing for the state, and a slightly awkward thing for your individual export credits.
When a large share of the street exports at the same midday moment, the grid can be flooded with cheap solar. Two consequences follow for new systems. First, networks increasingly apply export limits, capping how much you can send back, so an oversized system may not export everything it makes. Second, the value of midday power falls, sometimes called solar sponge pricing, where the grid wants to soak up cheap daytime energy rather than pay much for more of it.
None of this makes solar a poor decision in Queensland. It strengthens the case for sizing the system to your own consumption, and for storage that banks the cheap midday surplus instead of giving it away. It just means the old plan of “build it big and live off the export cheque” no longer holds.
Why the installer matters more than the brand
One last point that is easy to skip and expensive to ignore. More than 700 solar retailers have gone under in Australia since 2011, and roughly one system in six is now orphaned, meaning the company that installed it no longer exists to honour the warranty.
A panel warranty is only as good as the business behind it. The cheapest quote from a name you have never heard of, with no local presence, is a bet on that business still existing in five years. Favour an installer with a track record in your region, check the accreditation, and read the workmanship warranty, not just the panel one. To compare like for like, you can get matched with an accredited Queensland installer and put the same brief in front of several.
The bottom line
In 2026 a 6.6kW system in Queensland runs about $5,000 to $9,000 installed after the federal STC discount, and a 10kWh battery roughly $6,500 to $9,500 after the Cheaper Home Batteries rebate, with both federal schemes shrinking each year to 2030. There is no broad state panel rebate, so do not count on one, and confirm whether any state battery support is open before you sign. Feed-in is now worth only a few cents, regulated under Ergon in the regions and set by the market in the south-east, so the money is in using your own power, not exporting it. Get three quotes, weigh installer longevity over the cheapest sticker, and confirm every figure here is current when you buy, because Queensland’s schemes move. These ranges were last checked June 2026.