Cheaper Home Batteries Program – Federal Solar Battery Rebate 2026 Changes

Last updated 27 May 2026

Key Points (Current as of May 2026)

• The Federal battery rebate budget has been expanded from $2.3 billion to $7.2 billion to support over 2 million installations by 2030.
• From 1 May 2026, the changes are now in effect: the rebate declines every six months, and a new tiered system reduces the subsidy for systems larger than 14 kWh.
• The current STC factor is 6.8, giving approximately $272 per usable kWh (for the first 14 kWh of capacity).
• WA Synergy customers can stack the federal rebate with the $1,300 state rebate, but must enrol in a VPP to qualify for the state rebate. VPP participation is voluntary under the federal scheme only.
• From 1 May 2026, new systems in the SWIS must also meet updated Western Power technical standards.
• For a 28 kWh system installed now, eligible WA Synergy customers could receive up to $7,449 in combined support (federal $6,149 + Synergy $1,300).
• Interest-free loans of $2,001–$10,000 are available for WA households earning under $210,000. Note: the rebate itself has no income test.

What is the Cheaper Home Batteries Program?

The Cheaper Home Batteries Program is a $7.2 billion federal initiative designed to make battery storage more affordable and accessible for Australian households. Delivered through the Small-scale Renewable Energy Scheme (SRES), the program provides an upfront discount based on the battery’s usable capacity. The expanded program is intended to help more than 2 million Australians install a battery by 2030, delivering around 40 gigawatt hours of additional storage capacity.

The rebate value is determined by the number of Small-scale Technology Certificates (STCs) assigned to the battery system, which are then traded to reduce the installation cost. The government intends to maintain a discount of approximately 30% across a range of battery sizes.

The program launched on 1 July 2025, and significant structural changes came into effect on 1 May 2026.

How Much Is the Federal Battery Rebate Worth?

Due to rapid uptake of large battery systems, the government introduced changes to the rebate structure that are now in effect from 1 May 2026. Two key changes apply:

• The STC factor (and therefore rebate value) now declines every six months, rather than annually.
• A tiered system has been introduced that reduces the subsidy for systems larger than 14 kWh.

New Tiered System for Battery Capacity

The full rebate applies only to the first 14 kWh of usable capacity. Above that, the STC factor is reduced:

Note: While a system up to 100 kWh can be installed, the rebate (STCs) only applies to the first 50 kWh of usable capacity.

Rebate Schedule (Based on 100% STC Factor)

The table below shows the estimated rebate per kWh (applicable to the first 14 kWh). Values above this tier are reduced as per the tiered structure.

Who is Eligible for the Rebate?

The program is open to:

• Homeowners and renters (with landlord consent)
• Small businesses
• Community organisations and facilities

Eligibility criteria:

• Battery must have a usable capacity between 5 kWh and 100 kWh (rebate only applies to the first 50 kWh)
• Battery must be installed with a new or existing rooftop solar system
• Battery must be listed on the Clean Energy Council’s approved battery list
• Installer must be accredited with Solar Accreditation Australia (SAA)
• Battery must be VPP-capable – actual VPP participation is voluntary under the federal scheme
• Only one rebate per electricity meter is available
• No income test applies – all eligible households qualify regardless of income

Can the Federal Rebate Be Combined with State Incentives?

Yes. The federal rebate can be stacked with eligible state-based rebates or loans. In Western Australia:

• Synergy customers may also receive a $1,300 WA rebate ($130 per kWh, capped at 10 kWh of capacity)
• Horizon Power customers may also receive a $3,800 WA rebate ($380 per kWh, capped at 10 kWh of capacity)

Combined support estimates (from May 2026):

• 10 kWh system — Synergy: ~$5,020 (Federal ~$3,720 + State $1,300)
• 10 kWh system — Horizon Power: ~$7,520 (Federal ~$3,720 + State $3,800)
• 28 kWh system — Synergy: up to $7,449 (Federal $6,149 + State $1,300)
• 28 kWh system — Horizon Power: up to $9,949 (Federal $6,149 + State $3,800)

The WA state rebate is capped at 10 kWh of usable capacity, while the federal rebate continues to apply to the first 50 kWh (with tiered reductions above 14 kWh).

Important: WA Residents – VPP & New Technical Standards

VPP Requirement

To qualify for the WA state rebate, batteries must be enrolled in an approved Virtual Power Plant (VPP). This is a firm requirement for the state scheme – not joining a VPP means you cannot claim the state rebate.

Approved VPP options for WA customers include:

• Synergy Battery Rewards (most common for Perth metro customers)
• Horizon Power’s Community Wave
• Alternative VPP products approved by the WA Government (must meet value-sharing criteria)

In practice, VPP dispatch events are infrequent – typically around 30 events per year during late-afternoon or evening peak demand periods. Most programs allow you to retain a minimum battery reserve, so household energy security is generally unaffected.

Note: VPP participation is mandatory for the WA state rebate, but only optional (capability required) for the federal rebate. You need a VPP-capable battery under both schemes, but only the state scheme requires you to enrol in a VPP product.

Related: WA Residential Battery Scheme 2025: rebates & loans at a glance

New Technical Standards (From 1 May 2026)

From 1 May 2026, all new and upgraded rooftop solar and household battery systems installed in the South West Interconnected System (SWIS) must comply with updated minimum technical standards set out in Western Power’s WEM Procedure for Standard Small User Facilities.

These requirements are designed to:

• Enable installation of larger, compliant solar and battery systems
• Support smarter grid integration
• Create broader opportunities for VPP and DER (Distributed Energy Resources) program participation

Existing systems that are not upgraded are not required to meet the new standards. Ask your installer to confirm your system meets current requirements.

Interest-Free Loans for WA Residents

WA households with a combined income under $210,000 may also be eligible for an interest-free loan of $2,001–$10,000, repayable over 3-10 years. This is available on top of the rebate.

Important: unlike the loan, the rebate has no income test – every eligible homeowner qualifies for the rebate regardless of household income.

How to Apply for the Rebate

There’s no separate application required. The rebate is applied upfront by your installer as part of the installation quote.

1. Your installer calculates and applies the rebate through the STC process
2. Choose a battery from the Clean Energy Council’s approved list
3. Use a battery installer accredited with Solar Accreditation Australia (SAA)
4. Ensure your system is VPP-capable
5. WA customers: confirm you’re enrolled in an approved VPP product to access the state rebate

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