13kW solar system price, output and battery options in Australia
A 13kW solar system is designed for larger Australian homes with high electricity use, pools, ducted air conditioning, EV charging or plans for battery storage. ADS Solar offers selected 13kW solar systems from $6,999 installed*, subject to site conditions and eligibility.
How much does a 13kW solar system cost in Australia?
ADS Solar currently offers selected 13kW solar systems from $6,999 installed*. The final price depends on panel and inverter choice, roof type, switchboard condition, access, meter work, network requirements and location.
Compare complete installed quotes. Equipment quality, system design, electrical scope, installation standards and warranty support all affect long-term value. If battery storage is part of your project, compare solar battery prices in Australia or explore complete solar and battery packages.
Get your 13kW solar system quote
Tell ADS Solar about your property, electricity use and future plans. We can compare suitable 13kW solar, battery and inverter options.
What is a 13kW solar system?
A 13kW solar system is a large rooftop photovoltaic system designed to generate substantial daytime electricity. It can suit larger households and properties with higher-than-average energy demand.
Modern 13kW systems commonly use around 28–30 panels, depending on panel wattage. The inverter arrangement depends on phase supply, network requirements and the final system design. Households with lower energy requirements can also compare a 10kW solar system or 6.6kW solar system.
- About 13kW of rated solar-panel capacity
- Compatible solar or hybrid inverter
- Roof mounting and electrical protection
- Online monitoring where supported
- Network and meter requirements where applicable
- Professional design and installation
Who should consider a 13kW solar system?
A 13kW solar system can suit homes with high electricity consumption and enough usable roof area. It is also attractive for households planning future electrification.
Large family homes
Suitable for properties with substantial daytime and evening electricity demand.
Swimming pools
Pool pumps, heating and outdoor equipment can add significant daytime consumption.
Electric vehicles
Higher solar generation can support suitable daytime EV charging.
Explore EV charging →Battery storage
Larger solar generation can create more opportunities to charge suitable home battery capacity.
Compare battery prices →How much power does a 13kW solar system produce per day?
Daily generation varies by city and system design. The current ADS Solar guide gives broad ranges of around 45–70kWh per day across major Australian cities, with higher estimates in sunnier locations.
| Location | Indicative daily generation | What can affect output |
|---|---|---|
| Sydney | 50–60kWh/day | Season, orientation, shading and weather |
| Melbourne | 45–55kWh/day | Seasonal conditions, roof layout and losses |
| Brisbane | 55–65kWh/day | Orientation, weather and shading |
| Adelaide | 55–65kWh/day | Roof design, temperature and shading |
| Perth | 60–70kWh/day | Orientation, system efficiency and weather |
These are indicative planning ranges, not production guarantees. Request a site-specific generation estimate for the proposed panel layout.
How many solar panels are needed for a 13kW system?
The exact number depends on panel wattage. Higher-wattage modern panels can achieve the target array size with fewer modules.
| Panel wattage | Approximate panel count | Approximate array size |
|---|---|---|
| 440W | 30 panels | 13.20kW |
| 450W | 29 panels | 13.05kW |
| 455W | 29 panels | 13.20kW |
| 460W | 29 panels | 13.34kW |
Examples only. Final array capacity and panel count depend on the selected products and compliant design.
How much roof space does 13kW solar need?
A modern 13kW array may need roughly 60–75m² of usable roof area, depending on module dimensions, roof layout, setbacks and access requirements.
Complex roofs may require the panels to be split across several orientations.
Roof space and orientation matter more as systems get larger
A larger system needs careful panel placement. Roof material, pitch, shading, structural condition and safe access all influence the design.
East-west layouts can spread solar generation across the day, while north-facing arrays can maximise total annual output where conditions are suitable.
What inverter is used with a 13kW solar system?
The inverter should be selected for the solar array, phase supply, network requirements and future battery plans. Some 13kW arrays may be designed around a 10kW inverter where permitted and appropriate.
Solar inverter
Suitable where the immediate goal is grid-connected solar without battery integration.
Hybrid inverter
May support compatible battery storage when solar and storage are planned together.
Explore solar + battery →Three-phase solution
Three-phase inverter configurations are commonly considered for larger residential systems where the property supply supports them.
How much can a 13kW solar system save?
Savings vary with electricity consumption, solar self-use, tariffs, feed-in rates and actual system generation. A personalised model is more useful than promising a fixed annual saving.
High daytime consumption
Using more solar directly can reduce the amount of electricity purchased from the grid.
Flexible household loads
Pool pumps, hot water, EV charging and appliances may be shifted into solar-producing periods where practical.
Battery storage
A compatible battery can store suitable surplus generation for use later.
Explore home batteries →What battery size works with a 13kW solar system?
A 13kW solar array can support a wide range of battery sizes, but the right storage capacity depends on household load and available surplus generation.
- 10kWh battery: may suit moderate evening consumption.
- 20kWh battery: may suit larger households with high evening demand.
- 30kWh+ battery: may suit high-consumption homes, EV owners and households wanting greater stored energy.
For more detail, compare ADS Solar’s home battery options, our solar battery prices or complete solar and battery packages.
Compare battery brands for a 13kW solar system
Battery selection depends on usable capacity, inverter compatibility, backup needs, expandability, monitoring, warranty and installed price. You can also compare multiple products on our solar battery prices page.
Tesla Powerwall 3
Explore integrated home battery storage, monitoring and supported backup options.
Explore Tesla Powerwall 3 →Sigenergy SigenStor
Compare modular storage and intelligent energy-management options.
Explore Sigenergy →Anker SOLIX X1
Explore modular battery storage for larger residential energy systems.
Explore Anker SOLIX X1 →Alpha ESS battery
Explore residential storage configurations for different household needs.
Explore Alpha ESS →SAJ solar battery
Compare SAJ battery storage and pricing options for suitable applications.
Explore SAJ →
13kW solar with battery storage and EV charging
A larger solar array can support homes that expect electricity demand to increase over time. Planning home battery storage, EV charging and other large electrical loads together can reduce the risk of undersizing the solar system.
- Home battery storage
- EV charging
- Ducted air conditioning
- Swimming pools
- Heat-pump hot water
- All-electric cooking
Is a 13kW solar system suitable for EV charging?
It can be a strong option for households with one or more EVs, especially when vehicles can charge while the solar system is producing.
More daytime generation
A larger array can provide more available solar energy for suitable daytime EV charging.
Smart EV charging
Compatible chargers can schedule charging around solar generation or selected tariff periods.
Explore EV charging →Battery planning
Battery, household and EV energy demands should be modelled together before final system sizing.
Compare battery prices →Can a 13kW solar system be used for a business?
Yes. A 13kW system may suit smaller commercial sites with strong daytime electricity use. Larger businesses should compare commercial systems based on interval load data and site demand.
Commercial solar
Explore larger business solar and commercial energy solutions.
Explore commercial solar →Industrial solar
Explore high-capacity solar for factories and industrial facilities.
Explore industrial solar →How a 13kW solar system is designed and installed
A large residential solar system should begin with energy use, roof layout and network requirements.
Review energy use
Assess bills, daytime loads, pool equipment, EVs and battery plans.
Assess the property
Review roof space, shading, phase supply, switchboard and network requirements.
Design the system
Select panel layout, inverter and battery-ready configuration where required.
Install and commission
Complete installation, testing, commissioning and monitoring setup.
Why choose ADS Solar for a 13kW solar system?
ADS Solar designs larger solar systems around actual property and energy requirements rather than treating every 13kW system the same.
Established experience
Solar industry experience since 2009 across residential and business projects.
System design
Panel, inverter, battery and electrical requirements are considered together.
Battery options
Compare multiple battery brands when storage is part of your energy plan.
Compare battery prices →Quote and support
Get a site-specific quote rather than relying only on generic online pricing.
Request a quote →Compare solar systems, solar batteries and energy solutions
Use these ADS Solar pages to compare system sizes, battery storage, EV charging and commercial energy solutions.
Solar battery prices
Compare home battery capacities, brands and indicative prices.
Solar battery prices →Commercial batteries
Explore larger battery-storage solutions for business applications.
Commercial batteries →Industrial solar
High-capacity solar solutions for factories and industrial properties.
Industrial solar →Get a 13kW solar system designed for your property
ADS Solar can assess your electricity use, roof, battery plans and installation requirements before preparing a personalised quote. If battery storage is part of your project, compare our solar battery prices .
Frequently asked questions about 13kW solar systems
How much does a 13kW solar system cost in Australia?
ADS Solar currently advertises selected 13kW systems from $6,999 installed*. Final pricing depends on equipment, roof, switchboard, network requirements, location and eligible incentives.
How much power does a 13kW solar system produce per day?
Indicative output can range from roughly 45–70kWh per day across major Australian locations. Actual production depends on season, orientation, shading, weather and system losses.
How many panels are needed for a 13kW solar system?
A modern 13kW system often uses about 28–30 panels, depending on panel wattage and final array design.
How much roof space does a 13kW solar system require?
Roughly 60–75m² of usable roof area may be required, depending on panel dimensions, layout, setbacks and access requirements.
What battery size is suitable for a 13kW solar system?
Households may compare 10kWh, 20kWh and 30kWh or larger batteries. The correct size depends on evening consumption, solar surplus, EV charging and future energy demand. Compare options on our solar battery prices page .
Can a 13kW solar system charge an EV?
Yes. Suitable daytime EV charging can use available solar generation. Actual results depend on solar output, household loads, charger power and vehicle requirements.
Can a 13kW solar system be installed on single-phase power?
Possibly, but inverter capacity and export settings depend on the local network and property supply. Larger residential systems often require careful network assessment.
Can I add a battery to a 13kW solar system later?
Often yes. Future battery compatibility should ideally be considered when selecting the inverter and overall system architecture.
Should I choose 6.6kW, 10kW or 13kW solar?
The right system depends on electricity use, roof space, battery requirements, EV charging and future demand. Compare 6.6kW solar, 10kW solar and 13kW solar before choosing your final system.
