How Much Do Solar Panels Cost in Australia? 2024 Price Guide
Discover current solar panel system prices across Australian states and cities, including typical costs for 6.6kW systems, battery add-ons, and available government rebates. This guide covers national averages, city variations, energy production estimates, and incentive programs to help you budget for residential solar.
Reviewed 24 July 2026
National Average Solar System Costs by Size
Solar system pricing in Australia is typically quoted per kilowatt (kW) of capacity after the federal Small-scale Technology Certificate (STC) discount has been applied. Prices vary significantly by component quality, installer, location, and roof complexity. A 6.6kW system remains the most popular residential size due to its balance of output, roof-space requirements and inverter compatibility. Smaller 5kW systems suit modest daytime loads, while 10kW installations cater to larger homes or those planning future battery storage or electric-vehicle charging.
The final price you pay depends on panel brand, inverter choice, mounting hardware, roof complexity and installer overheads. Premium panels with higher wattage reduce the number of modules needed, which can lower labour and racking costs even if the per-panel price is higher. Always request itemised quotes so you can compare equipment, labour and warranty terms side by side.
5kW systems: entry-level option for low daytime consumption
6.6kW systems: most common residential size, matches 5kW inverter limit
10kW systems: larger households or future-proofing for batteries/EVs
Prices vary by location, components, and site conditions; obtain itemised quotes for accurate figures
6.6kW System Prices Across Major Australian Cities
Capital-city pricing differs because of local competition, transport costs, licensing requirements and state-based incentives. Sydney and Melbourne typically see strong installer competition, which can drive keener pricing, while Perth, Adelaide and Hobart may have fewer installers but also different rebate structures. Brisbane and regional Queensland benefit from high solar irradiance, improving the financial return even if upfront costs are similar.
When comparing quotes, confirm whether the price includes the STC point-of-sale discount, meter upgrade fees, grid-application charges and any required switchboard work. Some advertisers show a before-rebate figure; always ask for the out-of-pocket amount after all incentives.
Sydney & Melbourne: high installer density, competitive quotes
Brisbane & regional QLD: strong irradiance boosts lifetime value
Perth & Adelaide: fewer installers, check local rebates
Hobart: smaller market, prices may vary
All figures indicative; confirm STC discount, meter fees, and switchboard work are included
Energy Production Estimates by Location for 6.6kW Systems
A 6.6kW system's annual output varies significantly with latitude, panel orientation, shading and local climate. Northern cities such as Brisbane and Darwin generally generate more kilowatt-hours per installed kilowatt than Melbourne or Hobart. These figures assume a north-facing array at optimal tilt with minimal shading; east-west splits or partial shade will reduce production.
Higher production directly improves bill savings and shortens payback, especially where feed-in tariffs are low and self-consumption is maximised. Use the Clean Energy Council's performance guidelines or your installer's modelling software for a site-specific estimate. Specific production estimates require site-specific modelling by a CEC-accredited installer using Clean Energy Council guidelines.
Orientation, tilt and shading materially affect output
Site-specific modelling is essential for accurate estimates
Solar Battery Storage Costs and Typical System Configurations
Adding battery storage increases upfront cost but allows you to use solar energy after sunset, reducing reliance on grid electricity during peak tariff periods. Common residential battery sizes range from 5 kWh to 15 kWh usable capacity. Battery economics depend on your evening consumption, tariff structure, feed-in rate and any state battery rebates. In many cases, a battery extends payback compared to solar alone, so model the cash flow carefully before committing.
A quality lithium-ion battery is generally designed to last around 10 to 15 years, with many premium units backed by warranties of up to 10 years (source: e12). Some households start with a solar-only system and add a battery later when prices fall or rebates become available.
5 kWh to 15 kWh usable capacity typical for residential
Battery lifespan typically 10–15 years with warranties up to 10 years (e12)
Consider retrofitting later if budget is tight
Prices vary by brand, chemistry, and installation complexity; obtain quotes
Federal STC Rebate Scheme and How It Reduces Upfront Costs
The federal Small-scale Renewable Energy Scheme creates Small-scale Technology Certificates (STCs) for eligible systems up to 100 kW. Installers usually apply the STC discount at point of sale, so the quoted price already reflects the certificate value. The number of STCs depends on system size, installation postcode (zone rating) and the deeming period, which reduces each year until the scheme ends in 2030.
STC certificate prices fluctuate with market supply and demand; the exact number of STCs depends on system size, postcode zone, and deeming period. For current STC prices and zone calculations, consult the Clean Energy Regulator website. The scheme does not require a separate application from the homeowner when the installer handles the paperwork.
STCs created for systems ≤100 kW
Discount typically applied at point of sale
Certificate value varies with market conditions
Deeming period reduces annually until 2030
Exact STC count depends on system size, postcode zone, and deeming period; check Clean Energy Regulator for current values
Victoria Solar Homes Program Rebates and Eligibility
Victoria's Solar Homes Program provides a solar panel (PV) rebate plus the option of an interest-free loan for eligible households. Eligibility requires owner-occupation, property value caps and use of approved products and authorised retailers.
The program also offers a Solar for Apartments rebate for eligible apartments, units and townhouses. Rebates of up to $2,800 per household for eligible apartments, units and townhouses (source: e3). The rebate is jointly funded by the Victorian and Commonwealth governments and applied as a point-of-sale discount on the invoice (source: e5). The rebate value is calculated based on the total cost of system purchase and installation (including GST), net of any STCs or other government incentives (source: e6).
Eligibility requires an Owners Corporation with up to 50 occupiable lots (source: e28). Installations must be completed within 120 days after rebate approval. A list of authorised solar retailers who have completed apartment installations is available. A new combined household income threshold of $150,000 per year for solar panel (PV) and hot water rebates will come into effect from 1 July 2026 (source: Solar Victoria news, 2026-05). For the most current income thresholds, rebate amounts and program end dates, visit the Solar Victoria website.
PV rebate + interest-free loan option
Solar for Apartments rebate up to $2,800 (e3)
Owner-occupation and property value caps apply
OC with up to 50 lots (e28)
Installation within 120 days of approval
Authorised retailer list available
ACT Battery Rebates and Zero-Interest Loan Schemes
The ACT's Next Gen Energy Storage Program offers a battery rebate for eligible households. In addition, the ACT provides zero-interest loans for eligible solar and battery installations through the Sustainable Household Scheme. These incentives can significantly reduce the effective cost of adding storage to a new or existing solar system.
Specific rebate amounts and loan limits are subject to change; verify current details on the ACT Government climate choices website before making decisions.
Eligibility criteria include property type, connection to the ACT grid, and use of approved products and installers. The loan is repaid through electricity bills over up to 10 years.
Battery rebate available (verify current details on ACT Government climate choices website)
Zero-interest loans available (verify current details on ACT Government climate choices website)
Repaid via electricity bills over up to 10 years
Approved products and installers required
Tasmania Solar Pricing and Feed-in Tariff Rates
Tasmania's lower irradiance means a 6.6kW system produces less annual energy than mainland counterparts, but the state's feed-in tariff (FiT) provides a guaranteed minimum export rate. Eligibility requires a system size ≤10 kW, connection to the TasNetworks distribution network, and compliance with technical standards.
Because the FiT is relatively modest, maximising self-consumption through load shifting or battery storage improves economics. The Tasmania Energy Saver Loan Scheme offers interest-free loans for energy-efficient upgrades, which can include solar and battery systems for eligible households.
Current regulated feed-in tariff is approximately 10.9 cents/kWh (source: Tasmania Safer Solar, a non-government industry site); confirm the current rate on the TasNetworks or Office of the Tasmanian Economic Regulator website. Rates are reviewed annually.
Eligibility: ≤10 kW, TasNetworks connection
Energy Saver Loan Scheme for interest-free finance
Lower irradiance increases importance of self-consumption
Rates reviewed annually; check TasNetworks or OTTER for current rate
Factors Influencing Savings and Long-Term Value
Annual savings depend on your electricity tariff, feed-in rate, daytime consumption patterns and system performance. Savings vary widely; a site-specific cash-flow model using interval data or a detailed load profile is essential for an accurate estimate. Over a 25-year panel warranty period, cumulative savings can be substantial before accounting for inverter replacement and degradation.
Inverter replacement may be required during the 25-year panel warranty period; budget for this possibility. Lifetime value is highly sensitive to future electricity price trends, which cannot be predicted. Conservative modelling uses current tariffs with a small annual escalation. Always ask your installer for a cash-flow model based on your interval data or a detailed load profile.
Savings depend on tariff, feed-in rate, usage and system performance
Site-specific cash-flow model is essential
Inverter replacement may be required during panel warranty period
Model with current tariffs; avoid speculative price forecasts
System Components: Panel Count and Roof Space Requirements
A 6.6kW system typically requires between 15 to 20 panels, depending on the wattage of each panel. For instance, if you use 440W panels, you'll need about 15 panels, whereas 330W panels would require around 20. The amount of roof space required for a 6.6kW system ranges from approximately 25 to 40 square meters, depending on the number and size of the panels.
Higher-wattage panels reduce the number of panels and roof area needed. A site inspection by a CEC-accredited installer will confirm the exact layout and structural suitability. Roof orientation, pitch, shading from chimneys or trees, and structural capacity all affect the viable panel layout. Common Australian residential practice is to oversize the panel array against the inverter, e.g., 6.6kW panels with a 5kW inverter.
15–20 panels depending on panel wattage
Approximately 25–40 m² of suitable roof space
Higher wattage = fewer panels = less roof area
Site inspection confirms layout and structural suitability
Common practice: 6.6kW panels with 5kW inverter
Factors Affecting Final Installation Price
Beyond equipment choices, several site-specific factors move the final price: switchboard upgrades (common in older homes), roof access difficulty (multi-storey, steep pitch), trenching for ground-mount arrays, meter reconfiguration fees from the network provider, and any required engineering certification. Installers may also charge for travel to regional locations.
Quality of workmanship, after-sales support, warranty administration and monitoring platform access vary between companies. The cheapest quote is not always the best value; verify Clean Energy Council accreditation, product warranty lengths, and whether the installer subcontracts labour or uses direct employees. Costs for these items vary widely; obtain itemised quotes to understand what is included.
Switchboard upgrades for older homes
Roof access complexity (height, pitch, material)
Trenching for ground-mount systems
Network meter fees and engineering certification
Installer accreditation, warranty support, subcontractor use
Getting Accurate Quotes from Local Installers
To compare apples with apples, request written quotes that specify: system size (kW), panel model and quantity, inverter model, mounting system, STC discount applied, total out-of-pocket price, warranty terms (product, performance, workmanship), and estimated annual production for your roof orientation. Ask whether the quote includes all network fees, meter changes and switchboard work.
Use state-based installer directories to find Clean Energy Council accredited companies near you. Comparing at least three quotes helps identify outliers and gives leverage for negotiation. Check online reviews, ask for recent local references, and confirm the installer holds appropriate licences and insurances.
You can browse installers by state to start your search: [solar installers](/solar-installers), [NSW](/solar-installers/nsw), [VIC](/solar-installers/vic), [QLD](/solar-installers/qld), and [SA](/solar-installers/sa). You can also explore solar installers, nsw, vic, qld, and sa. You can also explore solar installers, nsw, vic, qld, and sa.
Request itemised, written quotes from ≥3 CEC-accredited installers
Confirm STC discount, network fees, switchboard work included
Check reviews, references, licences and insurances
Use state directories to find local accredited companies
Frequently asked questions
What is the typical cost of a 6.6kW solar system in Australia in 2024?
After the federal STC discount, a 6.6kW system typically ranges from approximately $5,000 to $9,000 out of pocket depending on component quality, installer, location and any required switchboard upgrades. These figures are indicative only; obtain itemised quotes from CEC-accredited installers for accurate pricing.
How many panels do I need for a 6.6kW system?
A 6.6kW system typically requires between 15 to 20 panels, depending on the wattage of each panel. For instance, if you use 440W panels, you'll need about 15 panels, whereas 330W panels would require around 20.
How much roof space is required for a 6.6kW system?
The amount of roof space required for a 6.6kW system ranges from approximately 25 to 40 square meters, depending on the number and size of the panels.
What is the federal STC rebate and how does it work?
The Small-scale Renewable Energy Scheme creates STCs for eligible systems up to 100 kW. Installers usually apply the discount at point of sale, so the quoted price already reflects the certificate value. The number of STCs depends on system size, postcode zone and the deeming period, which reduces each year until 2030. STC prices fluctuate with market supply and demand; check the Clean Energy Regulator for current values.
What rebates are available in Victoria for solar panels?
Victoria's Solar Homes Program offers a PV rebate plus an interest-free loan option. The program also offers a Solar for Apartments rebate up to $2,800 for eligible apartments, units and townhouses (e3). For the most current income thresholds, rebate amounts and program end dates, visit the Solar Victoria website.
Does the ACT have a battery rebate?
Yes. The ACT Next Gen Energy Storage Program provides a battery rebate for eligible households. Zero-interest loans are also available through the Sustainable Household Scheme. Specific rebate amounts and loan limits are subject to change; verify current details on the ACT Government climate choices website.
What is the feed-in tariff in Tasmania?
Tasmania has a regulated feed-in tariff for eligible customers with systems up to 10 kW connected to the TasNetworks distribution network. Current regulated feed-in tariff is approximately 10.9 cents/kWh (source: Tasmania Safer Solar, a non-government industry site); confirm the current rate on the TasNetworks or Office of the Tasmanian Economic Regulator website.
How long does a solar system take to pay for itself?
Payback varies widely based on your electricity tariff, feed-in rate, daytime usage, system cost and production. A site-specific cash-flow model is essential for an accurate estimate. Avoid installers who quote a guaranteed payback period without assessing your property.
Do I need a battery with my solar system?
Batteries are optional. They increase self-consumption and provide backup during outages (if configured), but they add significant upfront cost. Evaluate your evening usage, tariff structure and available rebates before deciding.
How do I choose a reliable solar installer?
Look for Clean Energy Council accreditation, at least three itemised quotes, strong local reviews, recent references, proper licences and insurances, and clear warranty terms for product, performance and workmanship. Avoid installers who pressure you to sign on the day or cannot provide written documentation.
Sources
Solar for Apartments | solar.vic.gov.auSolar for Apartments program in Victoria offers rebates of up to $2,800 per household for eligible apartments, units and townhouses
Solar for Apartments | solar.vic.gov.auSolar for Apartments rebate value is calculated based on total cost of system purchase and installation (including GST), net of any STCs or other government incentives
Replace and recycle your solar system | energy.gov.auSolar panel average lifespan: 20-30 years; String inverter: 10-15 years; Micro inverter: 20-25 years; Lead acid battery: 5-10 years; Lithium-ion battery: 10-15 years
Solar for Apartments | solar.vic.gov.auSolar for Apartments program: building median capital improved residential lot value assessed using Victorian Valuer General data
Solar for Apartments | solar.vic.gov.auSolar for Apartments program: successful applicants may receive funding for up to 100% of system purchase and installation costs, maximum $2,800 per participating household