Solar and Battery Cost Australia 2026 — Combined System Prices
A combined solar and battery system costs $15,000 to $22,000 before incentives for a typical 6.6kW system with a 10kWh battery. After federal rebates (STCs and the Cheaper Home Batteries program) and any state incentives, the out-of-pocket price lands around $10,000 to $15,000.
Buying solar and a battery together usually costs less than separate installs. Package pricing saves $1,000 to $2,000 because the inverter, cabling, and labour are shared across one installation rather than two.
Common Solar + Battery Packages
Below are example pricing scenarios for common combined systems, based on analysis of over 500 itemised quotes from across all Australian states (excluding NT) collected in Q1 2026. System inclusions: panels, hybrid inverter, battery, mounting hardware, installation labour, and electrical work. Figures shown are the observed minimum and maximum quote ranges before any discounts, and after federal STCs and the Cheaper Home Batteries rebate only. State rebates are not included in the after-discount figures. An additional note for Victoria is provided.
- 6.6kW solar + 10kWh battery: $15,000 - $22,000 (after federal rebates: $10,000 - $15,000)
- 8kW solar + 13.5kWh battery: $20,000 - $28,000 (after federal rebates: $14,000 - $20,000)
- 10kW solar + 20kWh battery: $25,000 - $35,000 (after federal rebates: $18,000 - $25,000)
For Victorian households eligible for the Solar Homes rebate, the out-of-pocket after both federal and state incentives can be further reduced by up to $1,400. For example, the 6.6kW + 10kWh system could cost $8,600 - $13,600 after all applicable rebates.
These prices include panels, hybrid inverter, battery, mounting hardware, installation labour, and all electrical work. The exact price depends on your location, roof complexity, and the specific brands chosen.
How Rebates Stack for Combined Systems
The rooftop solar STC discount applies to the solar panels. The battery discount is also delivered through STCs under the Cheaper Home Batteries program. In 2026, a 6.6kW system earns roughly 40-50 STCs worth $1,500 to $2,000[1].
The Cheaper Home Batteries program applies to the battery. A 10kWh battery earns roughly 68 STCs (at the mid-2026 factor of 6.8 per kWh) worth around $2,500[3].
Some states add their own incentives. In Victoria, the Solar Homes rebate can provide up to $1,400 off panels, and this stacks with the federal battery discount[2]. Combined, a Victorian household might get $4,000 to $5,000 off the total package price.
Inverter Choice Matters More With a Battery
A combined system needs a hybrid inverter that handles both solar input and battery charging. If you already have a solar-only inverter and add a battery later, you may need an AC-coupled battery inverter instead, which can add $1,000 to $2,000 to the cost.
Going with a hybrid inverter from the start is usually cheaper and cleaner. Brands like Sungrow, Fronius GEN24, Goodwe, and Tesla offer popular hybrid options.
Which Package Size Is Right for You?
The right package depends on your daily energy usage and your goals:
- 6.6kW + 10kWh — often a practical starting point for average-usage households with suitable roof space and evening consumption.
- 8kW + 13.5kWh — for larger homes or families. Provides more generation and storage. Suits households with high air conditioning or pool pump usage.
- 10kW + 20kWh — for high-usage homes wanting more backup capacity and higher self-consumption, with a longer payback period.
Our solar battery cost guide covers standalone battery pricing in more detail, and the bill upload toolcan estimate what size works for your household.
Find your ideal solar + battery package
Upload your bill and see exactly what combined system size suits your home, plus estimated costs after all applicable rebates.
Frequently Asked Questions
Common questions about combined solar and battery costs
How much does solar plus battery cost in 2026?
A 6.6kW solar system with a 10kWh battery costs $15,000 to $22,000 before incentives. After federal STC and Cheaper Home Batteries discounts, plus any state rebates, the out-of-pocket is typically $10,000 to $15,000.
Is it cheaper to buy solar and battery together?
Yes. Package pricing typically saves $1,000 to $2,000 compared to separate installations. The inverter and labour costs are shared, and installers offer a bundled discount for doing everything at once.
What is the most popular solar and battery combo?
A 6.6kW solar system with about 10kWh of usable battery storage is a common starting point for many households, but the right size depends on your usage and site.
Does the Victorian Solar Homes rebate stack with Cheaper Home Batteries?
Yes. Victorian households can potentially access both the Solar Homes rebate for panels and the federal Cheaper Home Batteries discount for storage. Stacking them can reduce the combined cost by $3,000 to $5,000.
What inverter should I choose for solar plus battery?
A hybrid inverter is usually the best choice for a combined system. It handles both solar input and battery charging in one unit. Brands like Sungrow, Fronius, and Goodwe offer popular hybrid models.
How long does a solar plus battery system take to pay back?
Payback for a combined system is typically 7 to 12 years, depending on your usage patterns, feed-in tariff, and electricity rates. Here is a worked example: a 6.6kW system with a 10kWh battery costs $12,500 after discounts. It generates 8,500 kWh per year. You self-consume 40% directly (3,400 kWh), store 30% (2,550 kWh) in the battery (90% round-trip, so 2,295 kWh discharged), and export 30% (2,550 kWh). With an electricity rate of 30c/kWh and feed-in tariff of 8c/kWh, annual savings = (3,400 × $0.30) + (2,295 × $0.30) + (2,550 × $0.08) = $1,020 + $688.50 + $204 = $1,912.50. Payback = $12,500 / $1,912.50 ≈ 6.5 years. However, real-world payback is usually longer after accounting for battery degradation, usage variation, and tariff differences, landing in the 7 to 12 year range for most households.
Related guides
References
^Clean Energy Regulator — Small-Scale Renewable Energy Scheme
This guide is for informational purposes only. Pricing varies by location, installer, equipment brand, and roof complexity. Always obtain multiple itemised quotes before purchasing. Rebate availability and amounts change over time.