What rebate does a 20 kWh battery get?
Installed by 31 December 2026, a 20 kWh battery (close to what many homes buy now) earns 119 certificates. Each one is worth up to $40, so your installer takes $4,760 off the quote. The full rate covers the first 14 kWh only; the remaining 6 kWh count at 60%.
Put in from 1 January 2027, it gets 100 certificates instead, about $4,000, since each kWh earns a little less after every half-yearly step down.
The 20 kWh rebate, state by state
The federal part is identical in every state. Two states give more. Western Australia pays $1,300 to Synergy customers or $3,800 to Horizon Power customers once they join a virtual power plant. In New South Wales, the VPP incentive comes to about $720 on top. The ACT gives no rebate but offers a 3% loan instead.
| State | Federal | State extra | Price after rebates |
|---|---|---|---|
| New South Wales | $4,760 | about $720 from the provider, once you join a VPP | $14,000 to $19,000, before the VPP payment |
| Victoria | $4,760 | none | $14,000 to $19,000 |
| Queensland | $4,760 | none | $14,000 to $19,000 |
| Western Australia | $4,760 | $1,300 (Synergy) or $3,800 (Horizon Power) | $12,700 to $17,700 (Synergy), $10,200 to $15,200 (Horizon Power) |
| South Australia | $4,760 | none | $14,000 to $19,000 |
| Tasmania | $4,760 | none | $14,000 to $19,000 |
| Australian Capital Territory | $4,760 | 3% loan | $14,000 to $19,000 |
| Northern Territory | $4,760 | none | $14,000 to $19,000 |
The after-rebate prices come from the usual installed ranges in CHOICE, worked out between its two closest sizes.