Rebates, explained straight
The battery discount changed in May 2026. Size now matters more.
The federal Cheaper Home Batteries program still supports eligible systems, but the STC factor now steps down every six months and support tapers across larger capacity bands.
How it works
Three rules shape the current discount.
Usable capacity drives STCs
The calculation uses usable capacity and the STC factor applying on the installation date. Eligible systems can be 5–100kWh nominal capacity, with certificates calculated on the first 50kWh usable.
It steps down every six months
Changes effective 1 May 2026 moved the factor to more frequent reductions. The next scheduled factor change after this review is 1 January 2027, and the program continues stepping down through 2030.
Larger bands receive tapered support
The factor applies at 100% up to 14kWh usable, 60% for capacity above 14 up to 28kWh, and 15% for capacity above 28 up to 50kWh. A larger battery can receive more total support without receiving the same support per added kWh.
What’s my number?
Tell us your suburb and roughly what you use in the evenings. We’ll come back with the battery size that fits, the rebate you qualify for, and a fixed installed price — all in writing.
Rebate questions
Straight answers on the fine print.
How much is the federal battery rebate worth?
The Cheaper Home Batteries program aims to provide a discount of around 30% across a range of eligible battery sizes. The exact value is based on usable capacity, the applicable STC factor, capacity tapering and the certificate value used in the quote.
Who is eligible for the battery rebate?
The federal program supports eligible residential and non-residential systems with 5–100kWh nominal capacity, connected to new or existing solar. The battery must be approved and installed through the required accredited pathway; STCs apply to the first 50kWh of usable capacity.
Does Queensland have its own battery rebate?
Queensland has run state battery schemes in the past and programs change over time. The federal Cheaper Home Batteries discount is the one that applies broadly right now — we track current programs and apply everything you’re eligible for in your quote.
Do I have to do the paperwork myself?
No. Under the agreed project scope, we handle the applicable rebate paperwork, certificate workflow and Energex application. The written quote shows the discount being offered and how it is applied.