Heat Pump Hot Water Rebates in South Australia (2026)

By PumpSwap. Checked against the official sources on 21 September 2026. How we check

In South Australia, a heat pump installed in 2026 gets the federal STC discount (typically $500 to $800), and you may get a further discount under the Retailer Energy Productivity Scheme (REPS). REPS has no government-set amount: each energy retailer decides what it offers, and you do not have to be that retailer's customer.

Total rebates and discounts: up to $800. PumpSwap's modelled installed price after rebates in South Australia: $2,400 - $5,000.

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South Australia heat pump rebates at a glance

Scheme	What you get	How it reaches you	Source
Small-scale Technology Certificates (STCs)	$500 to $800	Taken off the installer's quote	Official page
Retailer Energy Productivity Scheme (REPS)	Set by each retailer	Through a participating energy retailer	Official page

Who qualifies for each scheme is set out on its official page and in the steps below. Loans are listed but not counted as savings.

How to claim in South Australia

Ask installers and energy retailers whether they offer the REPS water heater activity. The discount, and any co-payment, is set by the retailer delivering it.
Since 1 January 2026, a heat pump must earn at least 13 STCs in climate zones 3 and 4 to qualify for the REPS water heater activity.
Priority group households receive a large share of REPS activity each year: concession card holders, people receiving the SA energy bill concession, tenants paying $500 a week or less in rent, customers on hardship or payment plans, and people referred by a financial counsellor.
Choose a heat pump on the Clean Energy Regulator's register, because only registered models earn STCs. The installer or their agent takes the STC discount off the quote when you assign the certificates to them.

What has changed in South Australia, and what is coming

Rebates move several times a year. Each entry below links to the official source, and every scheme on this page was last checked against its source on 21 September 2026.

1 January 2027FederalComing
Small-scale Technology Certificates (STCs). The deeming period drops from 5 years to 4, so the same heat pump earns about one fifth fewer certificates than a 2026 install and the upfront discount falls with it. It drops again every 1 January until the scheme ends in 2030. Clean Energy Regulator, calculating STC entitlements
1 January 2026FederalIn effect
Small-scale Technology Certificates (STCs). The deeming period dropped from 6 years to 5, reducing the certificates each system earns compared with a 2025 install. Clean Energy Regulator, calculating STC entitlements

Official sources for every scheme

Federal: Small-scale Technology Certificates, Clean Energy Regulator (checked 21 September 2026)

What a heat pump costs in South Australia after rebates

PumpSwap's modelled installed price after rebates, for South Australia's largest centres. It is a guide, not a quote: the real price depends on the system, your home and the installer.

Area	Modelled price after rebates
Adelaide	$2,400 - $4,800
Salisbury	$2,300 - $4,500
Tea Tree Gully	$2,400 - $4,700
Burnside	$2,600 - $5,000
Elizabeth	$2,200 - $4,400
Mount Barker	$2,500 - $4,900
Mount Gambier	$2,600 - $5,000
Gawler	$2,400 - $4,600

South Australia heat pump rebate questions

How much is the South Australian heat pump rebate?

There is no fixed amount. Under REPS, energy retailers set their own offers, so compare what installers and retailers are offering. The federal STC discount comes on top.

Do I need to switch energy retailer to get a REPS discount?

No. You do not need to be a customer of the retailer offering the activity.

Who is in the REPS priority group?

Concession card holders, people receiving the SA energy bill concession, tenants paying $500 a week or less in rent, customers on hardship or payment plans, and people referred by a financial counsellor.

How much is the federal STC discount in South Australia?

It is typically $500 to $800 for a 2026 install. The exact figure depends on the model, your climate zone and the certificate price on the day, so ask for it as a separate line on your quote.

What changes on 1 January 2027?

The federal STC discount steps down every 1 January until the scheme ends in 2030. A heat pump installed in 2027 earns about one fifth fewer certificates than the same model installed in 2026, so the upfront discount falls with it.