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6kW solar panel systems, or 6000-watt combined output solar panels, are becoming an increasingly popular choice among homeowners and businesses in Australia. These high-powered systems can produce large amounts of electricity, making them ideal for use in both residential and commercial settings.
Understanding 6.6kW and 6kW solar panel systems
These systems are measured in kilowatts (kW), indicating their peak direct current (DC) power output.
- Power output: Both systems generate substantial electricity. A 6kW system produces 6000 watts of peak DC power, while a 6.6kW system delivers 6600 watts. This translates to roughly 21-24kWh and 23-27kWh of daily energy generation, depending on your location and sun exposure.
- Panel count: The specific number of panels needed depends on the panel’s individual wattage. For instance, 16 x 370W panels are required for a 6kW system, while 16 x 410W panels would be used for a 6.6kW system.
- Suitability: Choosing between 6kW and 6.6kW primarily depends on your electricity consumption. Analyse your bills to understand your average daily or monthly usage. A 6kW system is suitable for households consuming around 19kWh daily, while 6.6kW caters to slightly higher needs.
How much electricity generation can I expect from a 6kW system?
Factors including install locations, positioning and component quality come into play. A 6.6kW solar photovoltaic (PV) system will generate approximately 24 kilowatt hours of energy daily, more than most Australian households use daily. You may receive feed-in tariff payments for your surplus electricity. Adding a 6.6kW system could lower the electricity cost during peak daylight hours.
Will a 6kW solar panel system work for your home?
This popular size caters to the average household, generating around 24kWh daily – often exceeding consumption. So, is it the perfect fit for you?
Consider your energy usage: if it aligns with the national average of 19kWh daily, a 6kW system could significantly reduce your reliance on the grid. Factors like location, panel orientation, and appliance usage can impact output. Consult a qualified solar installer for a personalised assessment.
How much does a 6.6kW solar system cost?
Normally, a 6.6kW solar system of good quality costs $5,500 to $9,000. The pricing is affected by numerous factors. Where you live affects the solar subsidy for a 6.6kW system. The quality of the solar panels you purchase and the installer you hire will impact pricing most.
But why 6.6kW of solar panels?
While installing 6kW systems has become more common, innovative Australians are adopting 6.6kW or even larger solar systems. 6.6kW is usually the chosen size and output of the system due to inverter oversizing. This means that a 5kW solar inverter can be oversized to include 6.6kW of solar panels. Most inverters available today can be oversized, with a general oversizing of 133%.
For homeowners who want to receive a good amount of energy to power the home and a cost-effective energy solution, a 6.6kW solar system is one of the best options.
Check out our page for why a 6.6 kW solar system is the new ‘solar sweet spot’.
A 5kW inverter for a 6.6kW solar system?
Besides being cheaper than a 6kW inverter, inverters generate much less power than their maximum capacity. Most solar energy is lost at 25 °C on days when temperatures are high. Other factors impacting the outputs are dirt and dirt on the boards or wire losses. In this case, you can also ensure that the inverter will operate as intended in terms of performance over longer periods.
Check out our page to learn more about the best solar inverters in Australia.
6kW system with batteries
If you consume a lot of energy, a 6kW (or 6.6kW) with batteries can be a good alternative. The price range for a 6.6kW system with 10kWh of battery storage is between $16,000 and $22,000. Hybrid systems typically require more extended payback periods than solar panel systems. If you were to split `the payback period between panels and battery storage, you will likely discover that the payback for batteries is roughly ten years, at which point you will need to replace them.
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Use our easy-to-use solar power and battery storage calculator to determine the size of your solar system with storage! Our solar calculator will generate performance information and potential savings.
We can send this information to 3 of our pre-vetted and trusted local installers in your area to receive obligation-free solar quotes.
How many solar panels will I need for a 6kW solar power system? How much area is required?
It depends upon the power of the solar panels installed, and the output will be determined.
A modern 6.6kW solar system incorporating 320W to 400W modules will comprise approximately 16-20 solar panels. These figures have drastically decreased in the last 10 years. All panels measure around 1.5m2, so the roof area needed for 6.7kW systems can range from 34 – 38m2, or possibly more, depending on how the roof is laid out and whether tilt-framed roofs are needed.
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Benefits of 6.6kw solar systems
- Reduced electricity bills: Offset a significant portion of your grid reliance, leading to substantial savings on electricity bills, especially with increasing grid costs.
- Increased energy independence: Generate your own clean energy, reducing dependence on the grid and enhancing self-sufficiency.
- Environmental sustainability: Contribute to a cleaner future by minimising greenhouse gas emissions and promoting renewable energy sources.
- Financial incentives: Take advantage of government rebates and feed-in tariffs available in many Australian states, further reducing upfront costs and increasing the return on investment.
- Increased property value: Homes with solar panels are often seen as more desirable, potentially increasing their market value.
Factors to consider before installation
- Roof size and orientation: Ensure your roof has sufficient area for optimal sunlight exposure to accommodate the chosen number of panels. Read more about Installing Solar: Does the Orientation of My Roof Matter?
- Shading: Identify potential shade sources like trees or buildings that may affect panel performance.
- Budget: Consider the upfront cost of the system, including panels, inverter, installation, and potential battery storage. Factor in government incentives and long-term savings on electricity bills.
- Energy consumption: Accurately assess your average daily or monthly electricity usage to determine the most suitable system size.
- Future needs: Consider a slightly larger system to accommodate growth if you anticipate increased energy consumption.
Additional considerations
- Inverter selection: Choose an inverter compatible with your system size and capable of efficiently handling the DC to AC conversion. Read more about Best Solar Inverters 2024 | Reliable And Intuitive Inverters.
- Warranty and maintenance: Understand the installer’s warranty terms and the system’s maintenance requirements.
- Grid-connected vs. off-grid: Most Australian installations are grid-connected, allowing you to return excess energy to the grid. Off-grid systems are more complex and require battery storage for complete energy independence.
- Financing options: Consider various financing options, including loans, grants, power purchase agreements (PPAs) or virtual power plants (VPPs). Read more about Virtual Power Plant (VPP) Offers in Australia.
- Battery storage: Explore adding battery storage to maximise self-consumption and store excess energy for nighttime or power outages.
Embrace the energy efficiency revolution by upgrading your solar systems and adding a battery or solar inverters with Energy Matters.
Energy Matters recommends cost-effective solar batteries such as GoodWe, Enphase, sonnen, Fronius, Fimer, Sungrow, Tesla, LAVO and Sigenergy.
With our 3 free solar quotes, you can compare plans from pre-qualified and vetted installers in your area and find the perfect solution for your home and business. Harness the sun’s power and save money on electricity bills while reducing environmental impact. Let Energy Matters guide you towards a brighter, more sustainable future.
Government rebates and incentives
The Australian government offers various incentives to encourage solar panel installation, including:
- Small-scale Renewable Energy Scheme (STCs): Reduce the upfront cost of your system by approximately 30%.
- Feed-in Tariffs (FiTs): Earn credits for excess solar energy exported to the grid.
- State-based rebates and grants: Check with your state and local governments for additional financial support programs.
Read more about:
- Home Solar Rebates, Incentives & Subsidies In Australia
- Solar power incentives, loans & rebates for small business
- Solar Battery System Rebates, Subsidies, & Incentives
- Australian Solar Feed in Tariffs Information
- Solar Feed-in Tariff Comparison: Best Tariffs by State and Territory
- Renewable Energy Certificates (RECs) information
- Large-Scale Generation Certificates (LGCs)
Taking the next step
Contacting reputable local solar installers is crucial for obtaining personalised advice and quotes. They can assess your needs, recommend the ideal system size and components, and provide detailed cost estimates. Remember to compare quotes from multiple installers to ensure you get the best value for your investment.
Investing in a 6kW or 6.6kW solar panel system in Australia can be wise, offering numerous benefits for your wallet and the environment. By carefully considering your needs and researching your options, you can harness the power of the sun and make a positive impact.
Ready to go solar? Get an instant assessment
To find out how much a solar system with storage or even an EV charger will cost, try our easy-to-use solar power and battery storage calculator! Our solar calculator will generate performance data as well as possible cost savings.
We can forward your information to 3 trusted local installers in your area to obtain free, no-obligation solar quotes.
Find out how much you can expect to pay for solar
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*Prices quoted are to be used as a guide only and do not factor in state and other rebates and incentives. Includes STC discount.
