South Australia · last reviewed 4 July 2026
Heat pump hot water rebate in SA, explained straight
South Australia's Retailer Energy Productivity Scheme (REPS) is explicitly designed to reward going all-electric: roughly $850 (ex GST) when your home has no gas connection — or disconnects it at installation — versus around $245 if gas stays on. Federal STCs apply on top.
How the SA incentive works
- REPS is delivered through obliged energy retailers and their partners — your installer arranges it and the amount comes off your price.
- The big swing: no gas connection (or disconnecting on install day) takes the incentive from roughly $245 to roughly $850 ex GST.
- Federal STCs stack on top at point of sale.
What Adelaide households actually pay
- Typical installs run $2,500–$5,500 before incentives. If you're already considering dropping gas — hot water is often the last gas appliance — the combined REPS + STC support plus the removed daily gas supply charge makes the all-electric route the standout economics in SA.
- As always: three quotes, itemised incentives, licensed plumber.
Quick answers
Why does disconnecting gas change the SA rebate so much?
REPS is an energy-productivity scheme — removing a gas connection alongside the efficient upgrade counts for substantially more certificates, so the incentive jumps from roughly $245 to roughly $850 ex GST.
Do I need a specific installer for REPS?
The incentive flows through obliged retailers and their approved partners, so use an installer who works within the scheme — they'll apply it as a discount on your quote.
Is it worth keeping gas just for hot water in SA?
Usually not once the system needs replacing: the smaller rebate, the daily gas supply charge, and gas usage costs generally compare poorly against an all-electric heat pump — but run your own numbers for your tariffs.
Based on published scheme information as at 4 July 2026. Amounts vary by system, zone and eligibility, change over time, and are decided by scheme administrators — not us. Confirm final figures with an accredited installer before committing. General information, not advice.