6KW & 6.6KW SOLAR SYSTEM PRICING AND INFORMATION
In Western Australia, 6KW (and 6.6kW) solar power system installations will be relatively widespread in 2023, partly because of the continuing decline in the price of solar energy components, the still-generous subsidy, and feed-in tariffs. These setups may feature 6kW or 6.6kW of solar panels but only a 6kW inverter. For further details on “oversizing”, read the notes below.
How many solar panels will I need for a 6kW system?
The size (output) of the solar panels utilized in the installation will determine that. A 6kW solar system, for instance, would have 15 modules, or a little over 6kW, if 415 watt panels were utilized, or 18 for a 6.6kW array (a little under).
How much roof space is required for a 6kW solar power system?
For a 6kW solar power system installation, approximately 28.7 square meters of rooftop area is required (based on a panel measuring around 1.8 meters by 1.1 meters (or a bit more than 31.7 square meters for 6.6kW)). Based on 415 Watt panels, here is an approximation of how much room 6kW takes up.
How much electricity generation can I expect from a 6kW system?
Installation location, actual sun penetration, and component quality all impact factors. But on average, a 6kW PV system should provide more electricity than the typical Western Australian family needs each day, or about 24 kilowatt-hours. Remember that you will receive feed-in tariff payments for any excess electricity you produce. And there may be instances in which the extra power provided by a 6kW system can significantly lower your daytime peak electricity prices (for example, costs associated with summer air-conditioning). Keep in mind that in a system this scale, self-consumption is essential to getting the most out of it.
How much does a 6kW solar power system cost?
Early in 2023, the price of a 6kW system with high-quality parts and expert installation will typically vary between $4,500 and $6,500. The solar subsidy is taken into account in this price range.
What is the payback period on a 6kW system?
If everything goes according to plan, you have a solid installation, low paid-in and a fair price, and you meet your roof needs—you should see a simple payback period of about 5 to 6 years. To obtain a better idea of the returns, utilise our solar calculator.
If you can find affordable solar financing, you might also be able to start with a positive cash flow and owe very little upfront.
If you want, think a little bigger: 6.6kW rather than 6kW.
While the installation of 6kW systems has become more common, intelligent Western Australians have also spotted 6.6kW or even larger solar systems. Please understand that you should rather just get a 5kW inverter and 6.6kW of solar panels if you’re running on a single phase energy supply, which is the case for the majority of Western Australian households.
This may appear to be an esoteric number that I chose at random. In general, a 6.6kW designated system only loses a few tenths of kilowatts for your money. And according to all the calculations I’ve done, a 6.6kW solar system will offer you a fantastic return on your investment if you’re receiving a respectable feed in tariff (8c or more per kilowatt hour).
About ‘oversizing’ solar systems
The inverter is what determines how much solar power your system will be able to safely handle: the inverter rating. It will monitor your daily use, completely safe, and won’t affect the inverter. You’ll receive the highest level of incentive available because Western Australia’s solar subsidy (still frequently referred to as the “solar rebate”) is based on panel capacity rather than inverter size.
Which inverter?
There remains the possibility that a 6kW inverter is less expensive than a 6kW inverter, as both may be quoted capacity for a variety of reasons, with temperature being a significant one. On a 25°C day, the majority of solar panels lose about 10% of their rated power, and more if it is hotter—yet Western Australia is accustomed to warm climate. Adding a 6.6kW inverter is also highly recommended because this is the largest capacity that most Energy Service Providers permit to be linked to the grid.
What is the price of a 6.6kW solar system?
Comparable to a 6kW system, the price typically ranges between $5,400 and $6,500 in the nation for a full turn-key quality install with the installer adhering to the panel and inverter manufacturer’s specifications.
Most systems on the market are composed mostly of 415 watts, you’ll be obtaining 2 more panels for 6.6kW. In comparison to the cost of the subsidy, the extra panels are so inexpensive since the installer is already on-site and adding a few extras to the system doesn’t require much work.
Before you go, for similar information for larger system upgrades, installation requirements and there are rapid quotes and full energy plans for feed of panel capacity compared to inverter capacity. 6.6kW times 133% equals 8.65kW. In order to stay within the permitted oversizing limit, aim for a system that is as near to 8.65kW as you can get it. However, do not go even one watt over.
You’re undoubtedly on the right path by considering a full system with expert installation—and you can start saving from day one by requesting a free quote or using our free service to request up to three solar quotes from local installers that I’ve personally chosen and trust to design the system that best meets your requirements and conditions.