The battery rebate drops on 1 January 2027
The federal battery rebate steps down every six months until the program ends on 31 December 2030. The amount you get is set by the date your battery is installed and commissioned, not the date you get a quote or sign a contract.
What it means for common battery sizes
| Usable size | Installed by 31 Dec 2026 | Installed from 1 Jan 2027 | Less |
|---|---|---|---|
| 5 kWh | $1,292 | $1,064 | −$228 |
| 10 kWh | $2,584 | $2,166 | −$418 |
| 13.5 kWh | $3,458 | $2,888 | −$570 |
| 16 kWh | $3,914 | $3,268 | −$646 |
| 20 kWh | $4,522 | $3,800 | −$722 |
| 30 kWh | $5,852 | $4,902 | −$950 |
Assumes $38 per STC, which is what most installers credit. Capacity above 14 kWh earns a reduced share of the rebate, which is why bigger batteries lose proportionally less. Work out your exact battery →
Installing before 1 January 2027
- The date that counts is when the battery is installed and commissioned. A signed quote doesn't lock in the current rate.
- Installers get busy in the weeks before a step-down, so leave time for quotes, a site visit and scheduling.
- Ask each installer what happens to the price if the installation slips past the step-down date.
- The rebate comes off the quote at point of sale. Check the quote shows the number of STCs and the price per STC.
- The drop on a 10 kWh battery is about $418. Getting the size right is worth more than beating the date. Plan your system →
The full step-down schedule
| Installed | STC factor | 10 kWh rebate |
|---|---|---|
| May–Dec 2026 (now) | 6.8 | $2,584 |
| Jan–Jun 2027 | 5.7 | $2,166 |
| Jul–Dec 2027 | 5.2 | $1,976 |
| Jan–Jun 2028 | 4.6 | $1,748 |
| Jul–Dec 2028 | 4.1 | $1,558 |
| Jan–Jun 2029 | 3.6 | $1,368 |
| Jul–Dec 2029 | 3.1 | $1,178 |
| Jan–Jun 2030 | 2.6 | $988 |
| Jul–Dec 2030 | 2.1 | $798 |
Published by the Clean Energy Regulator. The STC factor is the number of certificates earned per kWh of usable capacity, up to 14 kWh.