Battery rebate calculator: South Australia
By Sithum Imarsha Last reviewed
A 13.5 kWh battery in South Australia gets about $3,367 off if it is installed between 1 May and 31 December 2026, and pays back in about 6.2 years at our default SA rates.
Your result
Federal rebate
$3,367
13.5 weighted kWh × 6.8 = 91 STCs × $37
Batteries must be 5–100 kWh nominal.
- Price before rebate
- $12,150
- Cost after rebate
- $8,783
- Saving in year one
- $1,417
- Simple payback
- 6.2 years
- With battery wear
- 7 years
- Rates used
- 41.5c/kWh import
5c/kWh feed-in
Next change 1 January 2027. The same battery gets $2,812 (−$555).
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How we calculated this
- The rebate is the certificates (STCs) the battery earns, times the certificate price.
- The certificates come from the usable capacity that counts and the factor for the install date.
- Payback divides the cost after the rebate by the first-year saving at the electricity rates on this page.
Check the battery qualifies
13.5 kWh qualifiesdoes not qualify
Find the STC factor
May – Dec 2026: 6.8
Weight the capacity
13.5 kWh
Count the certificates
91 STCs(not eligible)
Value the certificates
91 × $37 = $3,367
Work out payback
$8,783 ÷ $1,417 = 6.2 years
This version starts with our default South Australian rates. Of the 7 states and territories in our calculator, SA has the highest default rate to buy power, which shortens payback.
Battery schemes in South Australia
Home Battery Scheme
Subsidy · Closed · South Australian Government
South Australia’s Home Battery Scheme has closed and new applications are not being accepted.
South Australia’s Virtual Power Plant is owned and run by AGL, which works with the South Australian Government. Its offers go to tenants of eligible SA Housing Trust homes. Source: SA Department for Energy and Mining, South Australia’s Virtual Power Plant page. Archive copy of 19 February 2026
Official source. Checked 1 October 2026.
We found no battery scheme in South Australia that was open to new applications when we looked on 1 October 2026. The federal discount is the only one we found.
What else matters for a battery in South Australia
South Australia Solar Feed-in Scheme (44c)
It pays 44c/kWh on top of your retailer’s feed-in rate until 30 June 2028. It is paid on the first 45 kWh you export a day. It is for solar systems connected before 30 September 2011. You stop receiving the 44c distributor feed-in tariff if you install an energy storage device.
Source: sa.gov.au solar feed-in payments (archived copy 19 Feb 2026, page updated 18 Jul 2024) (Official source). Checked 24 September 2026.
For a home still on this scheme, the Add a battery to solar calculator works out a battery’s payback with the 44c payments counted.
Default market offer on SA Power Networks
The flat default market offer on SA Power Networks charges 41.91c/kWh at any hour of the day, from 1 July 2026 to 30 June 2027.
Source: AER DMO 2026–27 determination (made 26 May 2026), read on the Federal Register of Legislation, F2026L00643: s.9 table (1), flat DMO (Official source). Checked 1 October 2026.
That is the highest usage rate of the 15 regulated flat offers in our data. The calculator on this page starts with 41.5c/kWh to buy power in South Australia, which is lower than that offer.
| Usable size | Saving in year one | Simple payback | Payback with battery wear |
|---|---|---|---|
| 5 kWh | $525 | 6.2 years | 7 years |
| 8 kWh | $840 | 6.2 years | 7 years |
| 10 kWh | $1,050 | 6.2 years | 7 years |
| 13.5 kWh | $1,417 | 6.2 years | 7 years |
| 16 kWh | $1,679 | 6.3 years | 7 years |
| 20 kWh | $2,099 | 6.5 years | 7 years |
| 30 kWh | $3,149 | 6.8 years | 8 years |
| 40 kWh | $4,198 | 7.1 years | 8 years |
Each row is for a battery installed between 1 May and 31 December 2026, at our default price of $900 per usable kWh before the rebate. Each row assumes 0.8 cycles a day, 90% round-trip efficiency and 2% battery wear a year: the defaults of the calculator on this page. Our default SA rates are 41.5c/kWh to buy power (Dated third-party source: Canstar market average, 4 Sep 2026) and 5c/kWh for the solar you export (Estimate: WattMaths rounded pick. EnergyPlans (July 2026) lists retailer feed-in rates, not one state figure). South Australia has the highest first-year saving of the 7 states and territories in our calculator, each at its default rates.
New to the rebate? Read the full guide on the main battery rebate calculator.
Questions
Is there an SA government battery rebate?
Not that we found when we looked on 1 October 2026. South Australia’s Home Battery Scheme has closed and new applications are not being accepted. We read that on an archive copy of the official page. The federal discount is the only one we found.