Solar battery rebate 2026: Cheaper Home Batteries Program

The Cheaper Home Batteries Program is delivered through the existing Small-scale Renewable Energy Scheme. It does not pay every household a fixed cash amount. The value depends on the battery's eligible usable capacity, the factor on its installation date, the taper and the price received for the STCs. In the usual quote structure, the household assigns the right to create the certificates to the installer or agent in exchange for an upfront discount.

For scheme purposes, the installation date is generally the date on the electrical compliance certificate or state equivalent. A quote prepared under an earlier factor is not enough if installation and certification happen after a step-down.

A battery with 13.5 kWh of usable capacity sits entirely inside the first capacity band, so the 2026 taper does not reduce it. For an installation from May to December:

13.5 kWh × 6.8 = 91.8, rounded down to 91 STCs.

At the Clean Energy Regulator's STC Clearing House price of $40 per certificate excluding GST, 91 × $40 = $3,640 excluding GST.

That is an arithmetic illustration, not a guaranteed quote. The open-market STC price varies, the Clearing House can have a transfer queue, and installers or retailers may charge administration fees. The program guidance requires the discount to be shown clearly, so compare quotes using the STC count, certificate price, GST treatment and fees rather than a headline percentage.

Larger batteries are tapered by capacity band, as the Clean Energy Regulator sets out:

Only the capacity within each band receives that band's share. A battery with 30 kWh usable capacity therefore gets the full factor on the first 14 kWh, 60% on the next 14 kWh and 15% on the final 2 kWh. The battery size calculator shows which bands a given size falls into.

The current federal schedule runs through December 2030 and steps down every six months from 2027. Program settings are reviewed at least annually, so confirm the table again before installation.

The important date is completion, not the day you accept a sales proposal. Ask the installer which factor the quote uses and what happens if the work crosses the next step-down date.

The federal eligibility rules cover a battery with 5–100 kWh nominal capacity, but issue STCs only for the first 50 kWh of usable capacity. The system must be connected to new or existing solar. A battery that stores grid electricity without solar is not eligible.

The battery system and inverter must meet the relevant Clean Energy Council approval-list requirements at installation, and the work must be completed by or under the on-site supervision of an installer accredited through Solar Accreditation Australia. Portable batteries and electric vehicles are outside the program.

Support is limited to one battery system at a premises and is available only the first time that system is installed, added to or replaced. Added capacity can qualify only when the existing system has not already received the federal discount, at least 5 kWh is added and the combined system remains within 100 kWh nominal capacity. Ask the installer to check the premises history before including the discount.

Separate nominal and usable capacity on the quote. Nominal capacity establishes the 5–100 kWh system range; usable capacity drives the certificate calculation and its 50 kWh limit.

For an on-grid system, the battery inverter must be capable of connecting to the grid and external entities, communicating through remote signals and using a protocol that can receive and respond to those signals. Off-grid batteries have an exception from this VPP-capability rule.

The same federal guidance is explicit that participation in a VPP is not required. Capability keeps the technical option open; it does not give a provider permission to control the battery and it does not enrol the household.

It also does not guarantee compatibility. Each provider supports selected battery, inverter, firmware and communications combinations. Before buying around a particular VPP, get written confirmation for the exact model and configuration and ask whether an internet connection, retailer change or particular electricity plan is required.

An eligible NSW battery can combine the federal discount with the separate NSW VPP incentive. The two schemes reward different things: the federal program supports installation, while the NSW incentive requires a qualifying VPP contract and capacity made available under that contract.

The NSW rules let the two incentives combine for an eligible battery up to 50 kWh, with the NSW calculation counting no more than 28 kWh. The NSW amount is set through participating providers rather than as one government dollar figure. Compare the VPP contract, retailer requirement, payment timing and control terms before treating the second incentive as part of the battery price.

The separate NSW battery incentive guide covers that contract and its eligibility checks.

Other states set their own rules on top of the federal discount: see the WA, Victorian, South Australian and Queensland guides.