A solar and battery package in Australia costs an estimated A$13,200 to A$17,000 installed for the most common combination, 6.6 kW of panels with a 10 kWh battery, after both federal discounts, as at November 2026. Before any discount the same package is roughly A$17,600 to A$21,300. A 10 kW system with a 13.5 kWh battery is an estimated A$18,000 to A$22,800 after discounts. All of these are Solar Cobber estimates, not quoted market prices.
Calculated from SolarQuotes and Solar Choice published price data, not from quotes we obtained; the method is under the price table.
Key facts
- As at November 2026, a 6.6 kW solar system with a 10 kWh battery costs an estimated A$13,200 to A$17,000 installed in Australia after the solar STC discount and the Cheaper Home Batteries Program discount (Solar Cobber estimate).
- A 10 kW solar system with a 13.5 kWh battery costs an estimated A$18,000 to A$22,800 installed in Australia after both federal discounts, as at November 2026 (Solar Cobber estimate).
- Solar Choice’s Battery Price Index for November 2026 puts the average 10 kWh battery at A$7,384 installed after the federal rebate, and the average 20 kWh battery at A$14,172, when added to a battery-ready system.
- For a 10 kW solar system with a 13.5 kWh battery installed in Sydney before 31 December 2026, the two federal discounts create about 160 small-scale technology certificates, worth roughly A$5,900 to A$6,400.
- On 1 January 2027 the federal battery factor falls from 6.8 to 5.7 and the solar deeming period falls from 5 years to 4, which removes about A$1,070 to A$1,160 from the discount on a 10 kW plus 13.5 kWh package.
Solar and battery package price list (November 2026)
A solar and battery package costs an estimated A$13,200 to A$37,000 after federal discounts, depending on size. The table shows Solar Cobber estimates of installed price ranges for six common packages, calculated in November 2026 (not quoted prices). Discounts assume a zone 3 city (Sydney, Brisbane, Adelaide, Perth or Canberra) and an install before 31 December 2026.
| Package | Before any discount | Solar STC discount | Federal battery discount | After both discounts |
|---|---|---|---|---|
| 6.6 kW solar + 10 kWh battery | A$17,600 to A$21,300 | A$1,665 to A$1,800 | A$2,516 to A$2,720 | A$13,200 to A$17,000 |
| 6.6 kW solar + 13.5 kWh battery | A$20,300 to A$25,000 | A$1,665 to A$1,800 | A$3,367 to A$3,640 | A$15,000 to A$19,800 |
| 10 kW solar + 13.5 kWh battery | A$24,200 to A$29,000 | A$2,553 to A$2,760 | A$3,367 to A$3,640 | A$18,000 to A$22,800 |
| 10 kW solar + 20 kWh battery | A$30,200 to A$34,400 | A$2,553 to A$2,760 | A$4,403 to A$4,760 | A$22,800 to A$27,200 |
| 13.2 kW solar + 20 kWh battery | A$33,000 to A$39,200 | A$3,367 to A$3,640 | A$4,403 to A$4,760 | A$24,800 to A$31,200 |
| 13.2 kW solar + 27 kWh battery | A$38,200 to A$46,100 | A$3,367 to A$3,640 | A$5,476 to A$5,920 | A$28,900 to A$37,000 |
Method for every estimate in this guide: the solar part uses SolarQuotes ranges for what buyers reported paying: A$6,000 to A$9,000 for 6.6 kW, about A$9,000 to A$12,000 for 10 kW and A$11,000 to A$16,000 for 13 kW (updated October 2026). The battery part uses the pre-rebate cost per kWh in the Solar Choice Battery Price Index for November 2026: A$990 to A$1,050 per kWh at 10 kWh, A$930 to A$980 at 20 kWh and A$880 to A$920 at 30 kWh. The 13.5 kWh and 27 kWh rows apply the rates on either side.
Treat the table as mid-market: adding the two parts slightly overstates a true package, because one hybrid inverter and one installation visit serve both, and published offers sit well outside it (see below).
Package prices by capital city
Solar is cheapest in Perth, dearest in Darwin. This table is a Solar Cobber estimate that adds the Solar Choice national average 10 kWh battery price after the federal rebate (A$7,384 to A$7,984) to the Solar Choice average solar price for each capital after STCs, both for November 2026. Solar Choice publishes no battery prices by city.
| City | 6 kW solar (Solar Choice average) | 10 kW solar (Solar Choice average) | 6 kW solar + 10 kWh battery (Solar Cobber estimate) |
|---|---|---|---|
| Adelaide | A$5,470 | A$8,610 | A$12,900 to A$13,500 |
| Brisbane | A$6,200 | A$9,350 | A$13,600 to A$14,200 |
| Canberra | A$5,790 | A$8,580 | A$13,200 to A$13,800 |
| Darwin | A$9,890 | A$14,930 | A$17,300 to A$17,900 |
| Hobart | A$6,680 | A$11,080 | A$14,100 to A$14,700 |
| Melbourne | A$5,750 | A$8,870 | A$13,100 to A$13,700 |
| Perth | A$5,230 | A$8,410 | A$12,600 to A$13,200 |
| Sydney | A$5,800 | A$8,810 | A$13,200 to A$13,800 |
The Western Australian state battery rebate is not deducted; see battery rebates by state.
How many panels, how much roof and how much power
A 6.6 kW system needs about 15 panels, a 10 kW system about 23 and a 13.2 kW system about 30, using 440 W panels. The table gives the panel count, roof area and average daily output in kWh for each size, using the Australian Government’s typical generation per kW for each city (checked November 2026).
| Solar size | Panels at 440 W | Roof space | Melbourne | Sydney | Brisbane or Adelaide | Perth |
|---|---|---|---|---|---|---|
| 6.6 kW | 15 | 30 sq m | 23.8 kWh | 26.4 kWh | 27.7 kWh | 29.0 kWh |
| 10 kW | 23 | 46 sq m | 36.0 kWh | 40.0 kWh | 42.0 kWh | 44.0 kWh |
| 13.2 kW | 30 | 60 sq m | 47.5 kWh | 52.8 kWh | 55.4 kWh | 58.1 kWh |
A battery only earns its keep if there is surplus solar to fill it, so 20 kWh or more usually needs 10 kW of panels or larger. See whether a 6.6 kW system is right for you, 10 kW solar system prices and what size solar system you need.
What changes the price
Brand, inverter and location move a package price by thousands of dollars.
- Battery brand. Solar Choice average installed prices for popular batteries ranged from A$497 to A$1,276 per kWh after the federal rebate (August 2026).
- Panel tier. Solar Choice’s November 2026 index puts a 10 kW system in Sydney at A$8,810 on average and A$10,380 with premium panels.
- Hybrid inverter. A hybrid inverter runs both panels and battery; SolarQuotes lists a 10 kW Sungrow hybrid inverter at A$3,600 single phase and A$4,500 three phase (May 2026).
- Backup and site work. Blackout backup, switchboard upgrades and difficult roofs are extra.
How the STC discount and federal battery discount apply
A package earns two federal discounts, and both come off the invoice. A small-scale technology certificate (STC) is a tradeable certificate created for an eligible solar or battery installation, which the installer sells and deducts from the price. This guide values certificates at about A$37 to A$40: Demand Manager’s spot market showed A$39.60 per STC on 12 November 2026, the Clean Energy Regulator’s Clearing House price is A$40, and installers may pass on slightly less (our assumption).
Here is the working for a 10 kW system with a 13.5 kWh battery in Sydney, installed before 31 December 2026:
- Solar: 10 kW x 1.382 (zone 3 rating) x 5 years (the 2026 deeming period) = 69 certificates, worth A$2,553 to A$2,760.
- Battery: 13.5 kWh usable x 6.8 (the factor for May to December 2026) = 91 certificates, worth A$3,367 to A$3,640.
- Total: 160 certificates, worth A$5,920 to A$6,400.
Three rules change the result:
- Zone. Melbourne and Hobart are in zone 4 (rating 1.185), so a 10 kW system earns 59 solar certificates, about A$370 to A$400 less than in Sydney.
- Battery size tiers. Under the Cheaper Home Batteries Program, the first 14 kWh earns the full factor, capacity from 14 to 28 kWh earns 60 per cent and capacity from 28 to 50 kWh earns 15 per cent. A 20 kWh battery earns 119 certificates, not 136.
- Install date. From 1 January 2027 the battery factor is 5.7 and the solar deeming period is 4 years. The same 10 kW plus 13.5 kWh package then earns 131 certificates, about A$1,070 to A$1,160 less.
Published package prices compared
Published solar and battery package prices range from about A$17,500 to almost A$35,000 for similar hardware sizes. The table lists three published prices.
| Source | Package | Published price | Basis |
|---|---|---|---|
| SolarCalculator (page updated May 2026) | 10 kW + 13.5 kWh | A$20,298 | National average |
| Positive Energy, Perth (prices checked 1 October 2026) | 10 kW + 20 kWh Sungrow SBH | From A$17,490 | After WA and federal rebates |
| 1KOMMA5, Sydney (2026 guide, undated) | 10 kW + 13.5 kWh | From A$34,650 | Rebate treatment not stated |
These are each company’s own figures. See our Sungrow SBH battery review.
The Positive Energy price is about A$5,000 below our estimates and the 1KOMMA5 price about A$12,000 above them, which is why three itemised quotes matter more than any average.
Is it worth it? A worked payback example
A 6.6 kW plus 10 kWh package pays for itself in roughly 7 to 8.5 years for a Sydney home with heavy evening use, and may never pay back for a home with little. Our assumptions:
- Sydney household using 20 kWh a day, 6 kWh of it in daylight.
- 6.6 kW of panels producing 26.4 kWh a day on average.
- A 10 kWh battery filled daily and delivering 9 kWh each evening after losses.
- Usage rate of 33.1c per kWh, the Ausgrid figure in our average electricity bill guide, and a feed-in rate of 5c per kWh, inside the 3.4c to 6.5c benchmark in our feed-in tariff tracker.
The package avoids buying 15 kWh a day (A$4.97) and exports 10.4 kWh (A$0.52). That is about A$2,000 a year, so a package costing an estimated A$13,200 to A$17,000 pays back in about 6.6 to 8.5 years.
The battery is the weaker half: it saves about A$905 a year against a roughly A$7,200 to A$8,000 cost after discount (8 to 9 years). If the household only draws 4.5 kWh from it each evening, payback stretches to 16 to 18 years, past a typical 10-year warranty, so that battery does not pay.
What to check on your quote
A package quote should let you rebuild the price line by line.
- Panel kW, brand and model, the hybrid inverter model and phase, and the battery’s usable kWh (certificates are based on usable capacity).
- Solar STCs and battery STCs as separate lines, with the certificate count.
- The expected install date, given the 1 January 2027 step down.
- Whether backup, switchboard work, metering and network approval are included.
- The retailer’s listing on the Clean Energy Council approved retailer list (New Energy Tech Consumer Code) and the installer’s listing on the Solar Accreditation Australia register.
Our guide to how to compare solar quotes explains each line, and you can browse installers in our directory.
FAQ
How much is a 6.6kW solar system with battery in Australia?
A 6.6 kW solar system with a 10 kWh battery costs an estimated A$13,200 to A$17,000 installed after both federal discounts, as at November 2026. With a 13.5 kWh battery the estimate is A$15,000 to A$19,800. These are Solar Cobber estimates, not quotes.
How much is a 10kW solar system with battery?
A 10 kW solar system with a 13.5 kWh battery costs an estimated A$18,000 to A$22,800 installed after both federal discounts, as at November 2026. With a 20 kWh battery the Solar Cobber estimate is A$22,800 to A$27,200.
How much is a 13kW solar system with battery?
A 13.2 kW solar system with a 20 kWh battery costs an estimated A$24,800 to A$31,200 after both federal discounts, and A$28,900 to A$37,000 with a 27 kWh battery, as at November 2026 (Solar Cobber estimates). Confirm your network’s export limits with the installer.
Is it cheaper to buy solar and a battery together?
Usually yes, because one inverter and one installation serve both. Solar Choice’s November 2026 index shows a battery needing its own inverter costs A$600 to A$1,000 more than one added to a battery-ready system.
Will solar and battery packages be cheaper in 2027?
The federal discounts will be smaller in 2027. From 1 January 2027 the battery factor falls from 6.8 to 5.7 and the solar deeming period falls from 5 years to 4, which removes about A$1,070 to A$1,160 from a 10 kW plus 13.5 kWh package.
What size battery should I pair with a 6.6kW solar system?
A 10 kWh battery is the usual match for a 6.6 kW system. A 6.6 kW array averages about 24 to 29 kWh a day in the mainland capitals, enough surplus to fill 10 kWh on most days.
Sources
- Solar Choice Price Index
- Solar Choice Battery Price Index
- Solar Choice: are solar batteries worth it
- SolarQuotes: solar panel cost
- SolarQuotes: solar battery prices
- SolarCalculator: solar panel cost
- Positive Energy: system prices, Perth
- 1KOMMA5: 10 kW system price
- Clean Energy Regulator: STC entitlements
- DCCEEW: Cheaper Home Batteries Program
- Demand Manager: STC spot price, 12 November 2026
- energy.gov.au: solar panels
About this guide
Written by the Solar Cobber editorial team from independent desk research checked in November 2026. Solar Cobber is a free directory that may earn referral or advertising fees from installers, and commercial relationships never affect content. Price ranges are our calculations from the published sources above, not quotes, and this is not financial advice. Send corrections via /contact.
Filed under Solar Systems
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