What a fair solar deal looks like in Brisbane this month (October 2026)
"Deals" and "specials" in Brisbane are usually the ordinary price with a countdown timer on it. Here is the ordinary price, installed and GST inclusive, after the federal STC discount, so you can tell a real discount from theatre.
| System | Cheapest credible | Fair range (Tier 1 + quality inverter) | Premium | STC already deducted |
|---|---|---|---|---|
| 5kW | $3,639 | $4,410–$6,470 | $8,480 | −$1,377 |
| 6.6kW | $4,448 | $5,390–$7,840 | $10,276 | −$1,817 |
| 8kW | $5,174 | $6,270–$9,110 | $11,940 | −$2,203 |
| 10kW | $6,470 | $7,840–$11,370 | $14,902 | −$2,754 |
| 13kW | $8,087 | $9,800–$14,210 | $18,625 | −$3,580 |
A 6.6kW quote in Brisbane under about $4,420 is below the cost of Tier 1 hardware plus a CEC-accredited install. It is not a deal; it is a warranty you will not be able to claim. Prices refreshed monthly from the Solar Choice index and quotes received through SolarScorecard.
Price movement — tracking from October 2026
This is the first monthly reading of the Solar Scorecard price index (October 2026). From next month this section shows how installed prices, the STC discount and the federal battery discount moved — month on month and against this baseline — so you can see whether to buy now or wait. The raw monthly snapshots are public at /data/pricing-history.json.
The Brisbane "special" red flags
- "Rebate ends this week": the federal STC discount steps down every 1 January, not weekly. The next step is in 74 days and is worth about $363 on 6.6kW — real, but not a reason to sign tonight.
- No brand named: "Tier 1 panels" is a bankability list, not a quality rating. Ask for the panel and inverter model numbers and look them up.
- Price "after rebates" with no breakdown: the STC discount must be itemised. If it is not, you cannot check it.
- Sales company ≠ installer: ask who is on the roof and for their CEC accreditation number. The warranty sits with whoever is still in business in ten years.
- Finance "from $X a week": fine, but compare the total: 0% interest usually means the price went up to cover it. Interest-free state loans exist in several states — Queensland's STC zone rating — Zone 3 in the south-east and Zone 1–2 in the north, among the highest in the country.
- Roof access: two-storey, tile and steep roofs add $300–$800 — a "special" that ignores your roof is not a quote.
Where the real savings are in Brisbane
- Buy before the STC step-down: $363 saved on 6.6kW by installing before 1 January 2027.
- Size up: cost per kW falls with size — 10kW in Brisbane is $7,840–$11,370, only $2,450–$3,530 more than 6.6kW for 50% more panels.
- Battery discount: $252 per kWh federally, about $2,516 off a 10kWh battery, steps down 1 January.
- Three quotes: the spread between the cheapest and dearest credible Brisbane quote for the same system is typically 20–30%. That is the discount.
Yearly saving on 6.6kW in Brisbane: $1,320–$1,830, payback 3.6–5.0 yrs. Full price breakdown on the Brisbane solar cost page.
Brisbane solar deals: questions
Are there solar deals in Brisbane right now?
The fair installed price for 6.6kW in Brisbane is $5,390–$7,840 after STCs this month. Anything inside that range with named Tier 1 hardware and a CEC-accredited installer is a good deal; a genuine special sits 5–10% under it, not 40%.
Is the solar rebate ending?
No. The STC discount reduces by one deeming year every 1 January until 2030 — about $363 less on 6.6kW each year. It does not end this week.
What is the cheapest solar in Brisbane?
About $4,420 for a credible budget 6.6kW system with Tier 2 panels. Below that, something is being cut — usually the installer's accreditation or the warranty.
Should I wait for Black Friday / end-of-financial-year solar sales?
Seasonal sales on solar are small (2–5%) and are outweighed by the January STC step-down and a quarter of lost bill savings. Buy when you have three like-for-like quotes.
Solar deals in other cities
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