10 Things You Need to Know About the Battery Rebate Changes in January 2027

Australia's federal battery rebate is changing again, and homeowners planning to install battery storage should be aware of the next reduction coming on 1 January 2027.

The Australian Government's Cheaper Home Batteries Program has helped make battery storage more accessible for Australian households, offering upfront discounts on eligible systems. However, the amount of support available is scheduled to decrease over time.

For homeowners across Brisbane, the Sunshine Coast, Gold Coast and surrounding areas, understanding these changes could make a difference to the upfront cost of installing a battery.

Whether you're adding storage to an existing solar system or considering a complete solar and battery installation, here are 10 important things to know before the January 2027 changes take effect.

1. The Battery Rebate Is Reducing on 1 January 2027

From 1 January 2027, the federal battery rebate calculation will change, reducing the discount available for eligible installations.

The rebate operates through Small-scale Technology Certificates (STCs), with the number of certificates determined partly by a government-set STC factor.

The factor is scheduled to change as follows:

Installation PeriodSTC Factor

1 May – 31 December 2026

6.8

1 January – 30 June 2027

5.7

1 July – 31 December 2027

5.2

This represents a reduction of approximately 16.2% in the STC factor from January 2027.

The actual dollar difference will depend on the battery's usable capacity, the value of the certificates and the system's eligibility.

2. Your Installation Date Determines Which Rebate Applies

One of the most important details is that accepting a quote or paying a deposit before the end of 2026 does not automatically secure the current rebate.

The applicable STC factor is determined by when your battery is installed and certified.

For example, if you accept a quote in November but your installation isn't completed until January, the January 2027 rebate calculation will generally apply.

This is why installation scheduling matters, particularly as the next reduction approaches.

3. The Battery Rebate Isn't Ending in January

There's an important distinction between the rebate reducing and the rebate ending.

The Cheaper Home Batteries Program is scheduled to continue through to 2030, with further reductions planned along the way.

This means eligible homeowners can still access support after January 2027, although the discount available may be lower.

For anyone already considering battery storage, it's worth understanding how the scheduled reductions could affect the overall cost of their installation.

4. Larger Batteries Are Calculated Differently

Changes introduced in May 2026 established a tiered rebate calculation based on usable battery capacity.

Under the current rules:

• The first 14 kWh of usable capacity receives 100% of the applicable STC factor.
• Capacity above 14 kWh and up to 28 kWh receives 60% of the factor.
• Capacity above 28 kWh and up to 50 kWh receives 15% of the factor.

This means additional capacity in larger batteries attracts a lower level of rebate support.

For households considering larger battery systems, it's particularly important to understand how these tiers affect the upfront discount.

At Open Electrical, we regularly design battery systems for homes with higher electricity consumption, electric vehicles and greater backup power requirements.

Rather than choosing a battery based solely on the rebate, we recommend selecting a system that suits your household's current and future energy needs.

5. You Can Still Access the Rebate If You Already Have Solar

Already have solar panels installed? You may still qualify for the federal battery rebate.

The program supports eligible battery installations connected to both new and existing solar PV systems.

For homeowners who installed solar several years ago, adding battery storage can be a practical way to make better use of the electricity their panels generate.

Instead of exporting excess solar energy during the day, a battery can store some of that electricity for use later in the evening or overnight.

However, not every existing solar system will be compatible with every battery.

Before recommending an upgrade, our team assesses your current system, inverter configuration and electrical infrastructure to determine the most suitable options.

6. Not Every Battery System Qualifies

The federal battery rebate has specific eligibility requirements.

Under the current program, eligible installations must meet criteria relating to battery capacity, approved equipment, accreditation and electrical safety.

These include:

• A nominal battery capacity between 5 kWh and 100 kWh.
• Installation alongside a new or existing eligible solar PV system.
• Equipment listed on the Clean Energy Council's approved battery list.
• Installation by an appropriately accredited installer with battery endorsement.
• Compliance with relevant Australian electrical standards.
• Technical capability to participate in a virtual power plant (VPP), where required.

Although systems with up to 100 kWh of nominal capacity may qualify, STC support is limited to the first 50 kWh of usable capacity.

Working with an experienced installer is important to ensure your proposed system meets the relevant requirements.

7. You Generally Can't Claim the Federal Battery Rebate Twice

Under the current program, only one eligible battery system per premises can receive battery STCs.

If you've already claimed the federal incentive, adding more battery capacity later generally won't qualify for another rebate.

This is worth considering if you're thinking about starting with a smaller battery and expanding it in the future.

Modular battery systems can offer excellent flexibility, but it's important to think about your longer-term requirements before deciding on your initial storage capacity.

Factors such as future electric vehicle charging, increased household electricity consumption and backup power needs should all be considered.

8. Battery Backup Isn't Automatically Included

With Queensland storm season underway, backup power is an important consideration for many homeowners.

However, installing a battery doesn't automatically mean your home will remain powered during a blackout.

Backup functionality depends on the equipment selected and how the system is designed and configured.

Some battery installations are designed to support essential circuits, while others may provide broader backup options depending on the home's electrical requirements.

At Open Electrical, we discuss backup requirements during the design process so customers understand what their system can and cannot power during an outage.

If blackout protection is a priority, it's important to raise this before choosing your battery system.

9. Installation Lead Times Are Important

With the next rebate reduction approaching, homeowners should allow sufficient time for system design, quoting, equipment availability and installation.

At Open Electrical, our typical installation turnaround is approximately 4–6 weeks, depending on the system and site requirements.

Leaving your enquiry until late December could mean your installation isn't completed before the January rebate changes take effect.

Starting the process earlier gives you more time to explore your options, finalise your system design and understand the installation schedule.

While installation dates depend on availability and individual project requirements, planning ahead can help avoid unnecessary delays.

10. The Right Battery Matters More Than the Rebate Alone

Government incentives can make battery storage more affordable, but the rebate shouldn't be the only consideration when choosing a system.

A properly designed battery should suit your home's electricity consumption, existing solar generation, energy usage patterns and future requirements.

It's also important to consider the quality of the equipment, warranty support, backup capabilities and the experience of the installation team.

At Open Electrical, we work with established manufacturers, including Sigenergy and GoodWe, and prioritise products backed by reliable Australian technical support.

As a family-owned electrical company operating since 2013, we complete our installations using our own qualified electricians, with no subcontractors.

From system design through to installation and after-sales support, our focus is on delivering a long-term energy solution that suits your home.

Planning a Battery Installation Before January 2027?

The upcoming federal battery rebate reduction is an important consideration for anyone planning to install battery storage.

While the rebate will continue beyond January 2027, the level of support available is scheduled to decrease.

If you're considering adding a battery to your existing solar system or installing a complete solar and battery package, now is a good time to understand your options.

At Open Electrical, we help homeowners across South East Queensland choose quality solar and battery systems designed around their individual energy requirements.

Don't leave your battery plans until the last minute.

Get in touch with Open Electrical for a tailored solar and battery quote and speak with our team about the upcoming rebate changes.

Frequently Asked Questions

Is the federal battery rebate ending in January 2027?

No. The Cheaper Home Batteries Program is scheduled to continue through to 2030. However, the STC factor used to calculate the discount will reduce from 6.8 to 5.7 on 1 January 2027.

How much will the battery rebate drop in January 2027?

The STC factor will decrease by approximately 16.2%. The actual reduction in dollar value depends on the battery's usable capacity, the tiered calculation and the value of the STCs.

Can I secure the current rebate by paying a deposit before January?

No. Paying a deposit does not automatically secure the current rebate. The applicable factor is based on when the battery is installed and certified.

Can I get the battery rebate if I already have solar?

Yes. Eligible batteries can be installed alongside an existing solar PV system, provided the installation meets the program requirements.

Should I install a larger battery before the rebate changes?

The most suitable battery size depends on your electricity consumption, solar generation, backup requirements and future energy needs. A tailored system assessment can help determine the right capacity for your home.