What a 10kW solar system costs in South Australia
A 10kW system in South Australia runs $8,000 to $13,000 after rebates for value-tier equipment, saving about $1,360–$2,030 a year for a household using 30 kWh a day.
What is different about South Australia
South Australia has the most expensive electricity of the 8 at 42c a unit, which raises what every unit you avoid buying is worth, and one of the lowest feed-in tariffs at 1c, so exporting is close to giving power away and self-consumption carries the entire case. It averages 5 peak sun hours a day.
The price, and the spread
$8,000 to $13,000 after rebates. The gap between those two numbers is $5,000 for the same equipment doing the same job on the same roof.
| Household uses | Their bill a quarter | System | After rebates | Saves a year | Pays for itself |
|---|---|---|---|---|---|
| 10 kWh | $482 | 6.6kW solar | $6,250 to $8,250 | $480–$730 | 10+ years |
| 15 kWh | $673 | 10–13kW solar | $8,000 to $13,000 | $740–$1,120 | 9–10+ years |
| 22 kWh | $941 | 10–13kW solar | $8,000 to $13,000 | $1,030–$1,540 | 6–10 years |
| 30 kWh | $1,247 | 10–13kW solar | $8,000 to $13,000 | $1,360–$2,030 | 5–8 years |
Where a 10kW system sits against the other sizes, in South Australia.
Is this the right size for you?
A 10kW array suits a household using about 30 kWh a day, which in South Australia means a bill around $1,247 a quarter at 42c a unit. Using much less than that and you are paying for generation you will export at 1c, which is close to giving it away.
Using more, or planning an EV, and you should be looking at the row below. An EV alone adds about 4.8 to 9 kWh a day.
What moves the price
Legitimately: a switchboard upgrade, a meter change, a two-storey or tile roof, scaffolding, and travel outside a normal service area. Each should be a line item you can see. Not legitimately: a separate charge for system design, a monitoring subscription the inverter makes redundant, and an extended warranty duplicating the manufacturer's.
$5,000 difference.
That is the gap between two quotes for the same 6.6kW system in South Australia, in the same week. Not build quality, not a better job. Overheads, how full the diary is that month, and what the person at your kitchen table thinks you will agree to. On solar with a battery the same gap is $10,600.
Closing that gap is what I do. I already know what installers in your area are quoting this month for this equipment, so I get you the bottom of that range for the same system other companies charge thousands more for. It costs you nothing. The installer pays me, and only if you go ahead, which is why there is no reason for me to push you at a bigger system than you need or at a dearer installer.
Get your own numbers, then get them priced properly
The table above is four example households. Two minutes of questions gets you your system size, what it should cost after rebates in South Australia, and a ten-year projection built on your roof and your usage. Then I find the bottom of that price range for you.
Run my numbers, freeNo installer buys placement or ranking here, and nothing reaches an installer unless you ask.
Common questions
How much does a 10kW solar system cost in South Australia?
$8,000 to $13,000 after rebates for value-tier equipment, saving about $1,360–$2,030 a year.
Is a 10kW system big enough?
It suits a household using around 30 kWh a day, about $1,247 a quarter in South Australia. An EV or a pool pushes you larger.
How long does a 10kW system take to pay for itself in South Australia?
About 5–8 years on these figures, though occupancy moves that more than anything else.