The Solar Installation Cost in Melbourne generally ranges from about $4,000 to $13,000 after applicable rebates. The final price depends on system size, equipment, roof design and installation requirements. Current 2026 market data places a typical 6.6kW system around $4,000 to $6,500 after rebates. A 10kW system can cost roughly $8,000 to $12,000.
For Melbourne homeowners, solar installation can reduce grid electricity use. However, the cheapest quote is not always the best value. Equipment quality, installation standards and after-sales support also matter.
Solar Installation Cost in Melbourne in 2026
System size is one of the biggest factors affecting Solar Installation Cost. Larger systems require more panels and usually larger inverters.
| System size | Typical Melbourne price after rebates* |
| 5kW | Around $3,000 to $5,000 |
| 6.6kW | Around $4,000 to $6,500 |
| 10kW | Around $8,000 to $12,000 |
*Indicative 2026 market ranges. Actual prices vary by installer, equipment and property.
A 6.6kW system remains a common residential choice. A 10kW system can suit larger homes or households with higher electricity use.
5kW Solar System Cost
A 5kW system can suit households with moderate electricity consumption. It can provide a practical starting point for smaller homes.
6.6kW Solar System Cost
A 6.6kW system offers more generation for medium-use households. It can also provide additional capacity for future battery storage.
10kW Solar System Cost
A 10kW system suits larger homes and higher-energy households. It can also work well for homes planning an EV charger or battery.
What Is Included in a Solar Installation Quote?
A professional solar installation quote should cover more than the panels.
It will normally include solar panels, an inverter, mounting equipment and installation labour. It should also cover electrical work and relevant connection requirements.
Your quote should clearly state the system capacity and equipment models. It should also explain applicable rebates and incentives.
Some properties need additional electrical work. Therefore, ask whether switchboard upgrades, special mounting or extra cabling are included.
A written quote makes it easier to compare different solar installation companies.
What Affects Solar Installation Cost?
Several factors can change the final Solar Installation Cost.
Your roof is one important factor. A simple roof can require less labour than a steep or complex roof. Shading can also affect system design.
Panel and inverter selection also matters. Higher-efficiency panels and premium inverter options can increase the initial price.
Electrical requirements can add costs too. Switchboard upgrades, export limits and three-phase electrical work may affect the quote.
Location also matters. Melbourne homes can have different installation requirements from properties in Regional Victoria.
Therefore, an online price should be treated as a guide. A proper site assessment provides a more accurate estimate.
Solar Rebates and Incentives in Victoria in 2026
Eligible Victorian households can access the Solar Victoria solar panel rebate. The current rebate is up to $1,400, subject to eligibility requirements. From 1 July 2026, the combined household taxable income cap is $150,000.
Eligible households can also choose an interest-free loan of up to $1,400. The loan is separate from the rebate but can further reduce the immediate payment required.
Solar systems can also receive Small-scale Technology Certificates. The installer normally applies this incentive as an upfront discount.
Eligibility rules apply. Therefore, check the current requirements before accepting a quote.
Residential Solar Installation vs Commercial Solar Installation
Residential solar installation usually focuses on household electricity consumption, roof space and future battery needs.
A typical home might use solar during the day and export excess generation. A battery can later store some of that excess energy.
Commercial solar installation usually involves larger systems. Businesses may have substantial daytime electricity demand from lighting, refrigeration, machinery or office equipment.
This can change the value of solar. Businesses may use more of their solar generation directly during working hours.
Commercial systems can also involve more complex electrical design. Therefore, commercial quotes should consider the building, energy profile and available roof space.
How to Compare Solar Installation Companies in Melbourne
When comparing a solar installation company, look beyond the headline price.
Check the exact panel and inverter models. Review product warranties and installation warranties. Also, confirm who will handle approvals and rebate paperwork.
Ask whether the installer provides monitoring and ongoing support. This can make it easier to identify performance issues later.
For Victorian rebate eligibility, products and installers must meet the relevant program requirements. Solar Victoria requires eligible PV products to appear on its approved lists.
A slightly higher quote can reflect better equipment or more complex installation work. Therefore, compare the complete system rather than just the upfront figure.
Is Solar Installation Worth the Cost in Melbourne?
Solar can reduce electricity purchases by allowing you to use energy generated on your roof.
The potential savings depend on system size, electricity consumption, solar generation and how much energy you use during daylight hours.
For example, a household that runs appliances during the day can directly consume more solar power. Another household may export more energy because everyone is away during working hours.
Solar Victoria says eligible solar households can save up to $500 annually, with potential savings of up to $1,000 when maximising use of solar energy.Therefore, system sizing should reflect your actual electricity usage rather than simply choosing the largest available system.
Also Read: Is Solar Worth It in Melbourne With the Feed-In Tariff So Low?
Conclusion
The Solar Installation Cost in Melbourne in 2026 is generally around $4,000 to $6,500 for a 6.6kW residential system after applicable rebates. Larger 10kW systems can cost roughly $8,000 to $12,000.
However, your actual price depends on your roof, electricity use, equipment and installation requirements. Government incentives can also reduce your upfront cost if you qualify.
Grow Savings provides residential and commercial Solar Installation in Melbourne and Regional Victoria, including panels, inverters, battery storage and mounting systems. A free solar audit can help determine the right system for your property before you invest.
Frequently Asked Questions
How much does solar installation cost in Melbourne?
A typical 6.6kW residential system can cost around $4,000 to $6,500 after rebates. A 10kW system can cost around $8,000 to $12,000. Actual prices vary by property and equipment.
What is the Solar Installation Cost for a 6.6kW system?
Current Melbourne market estimates place many 6.6kW systems around $4,000 to $6,500 after applicable rebates.
What rebates are available for solar installation in Victoria?
Eligible Victorian households can receive up to $1,400 through the Solar Homes solar panel rebate. Small-scale Technology Certificates can also reduce the upfront system price.
How long does solar installation take?
The physical installation can often be completed within one or two days. However, approvals and rebate processes can affect the overall timeline.
Should I install a battery with solar?
A battery is not essential for solar installation. It may suit households with high evening electricity use or plans to increase self-consumption.