The federal STC discount in South Australia: who qualifies
Everyone with a new rooftop system up to 100 kW qualifies, because the Clean Energy Regulator calculates the entitlement from the system alone: kilowatts times the zone rating times the deeming period, rounded down. There is no income test, no property value cap and no application by the household; the installer takes the certificates and the discount comes off the quote. Adelaide is in Zone 3 (rating 1.382), so a 6.6 kW system installed in 2026 earns 45 certificates, $1,755 at $39 each, which is already off the $5,812 to $7,126 installer offers on this site. From 1 January 2027 the deeming period drops from 5 to 4 years and the same system earns 36 certificates, $1,404, a cut of $351; the January 2027 guide has every capital.
The South Australian schemes: who qualifies, who does not
South Australia has no open household scheme. The Home Battery Scheme, a subsidy plus low-interest loan, is no longer offered and the Department for Energy and Mining lists no solar or battery rebate for households. Large retailers must deliver energy productivity activities under the Retailer Energy Productivity Scheme, and third parties describe a VPP connection incentive under it, but no government page stating its value or rules could be read, so it is not counted here.
| Scheme | Status | Who | Income test | Property value | Amount |
|---|---|---|---|---|---|
| Home Battery Scheme | closed | owner-occupiers | none stated | none stated | none stated |
| Retailer Energy Productivity Scheme (REPS) battery / VPP connection activity | not stated | owner-occupiers, renters | none stated | none stated | none stated |
The federal battery discount in South Australia: who qualifies
Any household, small business or community facility with one new battery per premises: it must be on the CEC approved list, between 5 and 100 kWh nominal, installed by an SAA-accredited installer with battery endorsement on a VPP-capable inverter, with a new or existing solar system of no more than 100 kW. There is no income test and no property value cap. The discount is 6.8 certificates per usable kWh for the first 14 kWh, 68 certificates and $2,652 on 10 kWh at $39, taken off the quote by the installer; from 1 January 2027 the factor drops to 5.7 and 10 kWh earns $2,223. Whether the battery is worth it in South Australia at that discount is worked through on the battery guide.
What an eligible household gets in Adelaide
$5,812 to $7,126 is the 6.6 kW price range in Adelaide after the $1,755 STC discount, standard and premium installer offers. No state amount comes off, so this is the range to hold a quote against. The Adelaide solar cost page has every size and the quote check scores a quote against it.
If you are not eligible
No household is excluded from anything in South Australia, because nothing state-run is open; the STC discount and the federal battery discount are the rebate, and neither has an income test.
Closed schemes still asked about: Home Battery Scheme (The South Australian Home Battery Scheme (subsidy plus low-interest loan) is no longer offered).
South Australia eligibility questions
Who is eligible for the solar rebate in South Australia?
$1,755 in federal STCs on a 6.6 kW system in Adelaide goes to any household installing a new system up to 100 kW, with no income test. South Australia adds nothing; the federal battery discount is the other open discount.
Is there an income test for the solar rebate in South Australia?
$1,755 in STCs on 6.6 kW in Adelaide and $2,652 on a 10 kWh battery come with no income test, and South Australia has no state scheme that applies one.
Can renters get the solar rebate in South Australia?
No South Australian scheme pays renters or landlords; a landlord who installs solar gets the STC discount on the quote like any owner, and the tenant gets the power. The renters guide covers the state-by-state position.
How much is the solar rebate in South Australia in 2026?
$1,755 on 6.6 kW in Adelaide from the federal STC discount (45 certificates at $39), and nothing from the state; a 10 kWh battery earns another $2,652. On 1 January 2027 the STC part falls by $351.
Do pensioners get a solar rebate in South Australia?
$1,755 in STCs on 6.6 kW in Adelaide and the federal battery discount, the same as any household; South Australia has no pension-based solar scheme open.
Do I apply for the solar rebate in South Australia or does the installer?
45 certificates on a 6.6 kW system are assigned to the installer, who applies the discount on the quote; the household signs the assignment form and does not deal with the Clean Energy Regulator. There is no state application in South Australia.