How is the home battery rebate calculated?

The federal Cheaper Home Batteries rebate is calculated as small-scale technology certificates (STCs) multiplied by the clearing-house price. STCs are determined by the battery's usable capacity in kWh, the deeming factor for the install date, and — for installs from 1 May 2026 — the capacity tier (the first 0–14 kWh earns at 100%, the next 14–28 kWh at 60%). A 13.5 kWh battery installed today earns about $3,640.

Does the battery rebate change each year?

Yes. The deeming factor steps down each period until the scheme ends in 2030, so batteries installed sooner earn a higher rebate. The 1 May 2026 reform also introduced capacity tiers that reduce the effective rate for larger systems above the first tier.

Do I need solar panels to qualify for the federal battery rebate?

Yes. The battery must be paired with a solar PV system (new or existing) to qualify for the federal rebate under the Cheaper Home Batteries Program.

Find my rebate

Home battery rebate calculator

A typical 13.5 kWh home battery qualifies for about $3,640 under the federal Cheaper Home Batteries rebate as of May 2026. Use the calculator for your exact battery size and install date — it applies the 1 May 2026 capacity tiers (100% for the first 0–14 kWh, 60% for 14–28 kWh) that most tools miss.

Figures verified May 2026 against the Clean Energy Regulator.

How much is the home battery rebate in 2026?

The current federal rebate for a 13.5 kWh home battery is about $3,640 (ex GST) as of May 2026, calculated from small-scale technology certificates at the current deeming factor. Larger batteries earn more up to the capacity cap; the tiers introduced on 1 May 2026 mean the extra capacity above 14 kWh is subsidised at the lower 60% rate. The rate steps down each period to 2030.

Usable battery capacity

13.5kWh

5 kWh50 kWh (eligibility cap)

Installation date

The rebate is set by install date and steps down each year to 2030.

Estimated federal rebate

$3,640

≈ 91 certificates × $40 · $270/kWh

0-14kWh @ 100%: 91.8 certs

Official value at the $40 clearing-house price; the open market often settles slightly lower, so installers may quote a little less. The battery must be installed with a solar PV system and meet program eligibility. This is a guide, not financial advice.

Quote requests are temporarily unavailable

We’re putting the finishing touches on this. In the meantime, use the calculator above to estimate your federal battery rebate — quotes will be back online soon.

Federal rebate by battery size in Australia (2026)

Indicative federal Cheaper Home Batteries rebate by usable battery capacity for Australia (2026), from the rebate engine.
Usable capacity	Certificates	Federal rebate
5 kWh	34	$1,360
10 kWh	68	$2,720
13.5 kWh	91	$3,640
14 kWh	95	$3,800
20 kWh	119	$4,760

Values from the federal rebate engine at the current deeming factor; capacity above 50 kWh is not eligible. The rebate steps down each year to 2030.

Am I eligible for the federal battery rebate?

Installed with solar PV?
The battery must pair with new or existing rooftop solar.
Own the home?
You must be able to authorise the roof and electrical install.
Usable capacity 50 kWh or under?
Capacity above the 50 kWh cap earns no rebate.
Eligible for the federal rebate
Claimed as small-scale technology certificates at install.

Rebate by state

New South Wales Victoria Queensland South Australia Western Australia Tasmania Australian Capital Territory Northern Territory

Rebate by battery size

5 kWh 10 kWh 13.5 kWh 14 kWh 20 kWh

What changed in 2026 Battery rebates hub