The Cheaper Home Batteries Program, plainly.

The 30-second take

• CHBP = roughly a quarter off the installed battery cost, applied upfront by the installer.
• STC factor stepped down 8.4 → 6.8 on 1 May 2026 (~$300–$400 less rebate on a 10 kWh battery).
• Tiered: 0–14 kWh = 100% factor, 14–28 kWh = 60%, 28–50 kWh = 15%, >50 kWh = 0.
• One battery rebate per address, permanently — even if a previous owner claimed it.
• Battery must be on a new or existing solar PV system. Commissioned on/after 1 July 2025.

What CHBP is

The Cheaper Home Batteries Program (CHBP) launched 1 July 2025 as the federal rebate on home battery storage. It’s administered by the Clean Energy Regulator and delivered as STCs — the same certificate mechanism as the solar panel rebate, just a separate stream.

In practice, you don’t see the STCs. Your installer applies the rebate as an upfront discount at the quote. For a typical 10 kWh battery in 2026, that’s roughly $2,500 off the installed cost.

The calculation

CHBP rebate = usable kWh × STC factor × STC spot price.

• Usable kWh — the *usable* capacity of the battery, not the nameplate. A Tesla Powerwall 3 has 13.5 kWh usable. A 16 kWh nameplate battery might have 14 kWh usable. Quote should be explicit about which.
• STC factor — 6.8 per usable kWh from 1 May to 31 December 2026 (down from 8.4 in Jan–Apr 2026). It steps down every six months, to 5.7 on 1 January 2027.
• STC spot price — ~$36–$39, same market as solar STCs. Floats with supply and demand.

The six-monthly step-down

The STC factor steps down every six months, in January and July. It fell from 8.4 to 6.8 on 1 May 2026 and drops again to 5.7 on 1 January 2027, then continues down each January and July until the program closes at the end of 2030.

Practical implication: a 10 kWh battery installed 30 April 2026 was worth ~$300–$400 more in rebate than the same battery installed 1 May 2026. Homeowners who delayed past April lost real money, and the same dynamic repeats at every step — the next one on 1 January 2027. The rebate is worked out on your installation date, not the date you sign.

“A 10 kWh battery installed 30 April 2026 was worth ~$300–$400 more in rebate than the same battery installed 1 May. The step-down isn’t a marketing line — it’s a real money event, and the next one lands 1 January 2027.”

The size tiers — why oversizing is punished

CHBP doesn’t apply the same factor across the whole battery. It tiers down as size increases.

• 0–14 kWh: 100% of the STC factor. Full rebate.
• 14–28 kWh: 60% of the STC factor. The portion above 14 kWh earns only 60% of the full rate.
• 28–50 kWh: 15% of the STC factor. Barely any rebate.
• >50 kWh: 0%. No rebate on the portion above 50.

So a 13 kWh battery hits the full 100% factor across the whole capacity — best value. A 20 kWh battery gets full factor on the first 14 kWh and only 60% on the next 6 — effective $/kWh worse than a 14 kWh system. If your quote shows a 20 kWh+ battery with a single flat rebate figure, ask for the tier split.

Eligibility constraints

• Solar PV required. The battery must connect to a new or existing solar PV system. Standalone batteries don’t qualify.
• Nominal capacity 5–100 kWh. Eligibility is measured on nominal capacity; the rebate is then paid on *usable* capacity, and only the first 50 kWh usable earns anything.
• The exact model must be on the Clean Energy Council approved battery list. Listing is per model, not per brand — check the model on your quote.
• The battery must be capable of joining a virtual power plant. The hardware has to be VPP-capable; you do not have to join one.
• Installed by an accredited installer. Solar Accreditation Australia accreditation with battery endorsement.
• One per address, permanently. If a previous owner of the property already claimed CHBP, the new owner cannot. Check before you commit.
• Commissioned on or after 1 July 2025. Older battery installs don’t qualify retroactively.

What stacks with CHBP

CHBP stacks with state battery programs where they exist, and that list is shorter than it was. WA runs the Residential Battery Scheme — up to $1,300 in the Synergy area, up to $3,800 with Horizon Power, and you must commit to joining a virtual power plant. NSW runs a VPP incentive, but the amount is set by your VPP provider on up to 28 kWh and the government publishes no fixed figure, so treat any dollar amount you are quoted as that provider’s offer rather than an official rate. ACT lends through the Sustainable Household Scheme, now at 3% rather than interest-free. The NT scheme has closed — its funding allocation was reached. VIC, QLD, SA, TAS run federal-only on batteries — but the federal stack alone is still substantial.

Read next

• Federal rebate page (full STC + CHBP)
• See home batteries (brands + pricing)
• Understanding STCs (solar rebate companion)

Sources

• cer.gov.au — solar batteries
• dcceew.gov.au — Cheaper Home Batteries
• solarchoice.net.au — 1 May 2026 changes