8KW Solar System Brisbane Guide To Savings, Rebates & Price
What You Need To Know - Table Of Contents
One of the bigger solar systems on the market now is an 8kw solar system. However, as energy prices rise, the 8kw is becoming a more popular option than the 6.6kw.
Is it, on the other hand, the greatest fit for your home?
And how much should you be prepared to spend for one? Continue reading to find out more.
Is a 8kw Solar System suitable for your home?
A 8kw solar system is helpful for homeowners that have somewhat higher costs than the typical house and energy consumption of 25-35kwh per day, with at least 30-50% daytime consumption.
Each home is unique, so determining if a certain solar system size would be a suitable fit for your home and energy usage requires a review of your bills, consumption habits, budget & available roof space these are all factors that need to be considered.
You may consider oversizing your solar system in relation to your power bill in order to get the most panels on your roof as possible. This will allow you to take advantage of the peak sunlight window, generating as much electricity as possible in the short time that your solar system is producing at full capacity.
Recommended System Size Range
Orange represents the maximum solar system size for the amount of kwh your home consumes. Black represents the smallest solar system size recommended.
How many Panels In A 8Kw Solar System
A common solar panel wattage size is roughly 370 watts; for an 8kw system, 21-22 solar panels are required.
How many solar panels your system has is dependent on the manufacturer and wattage size of the solar panel. The higher the wattage of each individual panel, the fewer solar panels you’ll need.
The benefits of having less panels means that you can fit a bigger system on your roof with the same amount of space. A bigger panel will generally give you slightly better watts per meters squared due to less aluminium framing.
However, getting a larger solar panel has certain drawbacks, such as limiting your system design in terms of how it will fit. Because they output so many more volts than a smaller panel, they might limit your wiring arrangement. When considering the numerous aspects that go into effectively sizing a solar system, choosing the suitable sized solar system for your home is critical.
How much does It Cost ?
A typical price range for a 8kw solar installation ranges from $6,000-$10,000 for a quality warranty backed system this includes the QLD Government rebate incentive. The average cost in Australia is $1.02 per watt or $7770 after the federal incentive.
However with over 6,000 firms registered with the Clean Energy Council to install solar, the solar business is one of Australia’s most competitive markets. As a result, market margins have been compelled to be razor-thin. Unfortunately, some installers have been forced to forsake product and service quality in order to provide ‘crazy pricing’ and back them with big marketing budgets in order to generate high volumes. These strategies have pushed down prices, but they haven’t improved the situation for consumers in most circumstances.
Referenced from SolarChoice
Note: Looking for a 8kw solar system quote? you can request a call from one of our consultants or call us directly at +61 7 3067 0649
How much Power Does A 8kW solar system produce per day ?
Your 8kW will have varied outputs depending on the state you live in. The peak number of sun hours generated each day on average in your state is used to compute the output of your solar system. For example, the usual peak sun hours in Brisbane are 4.2-4.5 hours per day throughout the year; to calculate how much your system will generate, multiply your peak solar hours by the system size. For example a 8kw x 4.5 = 36KwH of power production per day on average throughout the year.
A number of things can have an impact on your system’s output, including:
- Direction your panels are facing ( North is the most optimal direction )
- System efficiency rating ( This is usually around 80-90% of the solar system output total )
- Panel tilt angle
- Potential shading or physical impediments such as bird poo, dust etc
- Geographical location
How much Can a 8kw solar system save me?
A homeowner that sells 50% of their solar energy back to the grid and consumes the other 50% would expect to save $2167 annually with a 8kw solar system. This assumes that you are selling your power for $0.08 per kwh ( A standard Feed in tariff in Brisbane ), that you are paying $0.25 per kwh for the electricity that you buy from your energy provider & that your 8kw system is producing 36kwh of electricity a day.
Considering there are some variables you will find that most people fall into 3 buckets when it comes to their energy usage. A good rule of thumb is that the more energy you can use from your solar system instead of selling the more you can save.
How Your Energy Usage Affects Your Solar Savings
1 – Low daytime Usage 30-50%
Estimated savings annually $1,744 – $2,167
2 – Medium Daytime Usage 50-70%
Estimated savings annually $2,167 – $2,620
3 – High Daytime Usage 70-100%
Estimated savings annually $2,620 – $3,285
How Long Does it take to Pay Off A 8Kw System ?
A typical Brisbane homeowner that purchases an 8kw solar system for $7770 would expect to pay off their system in 3.5 years. This assumes that they are selling their power for $0.08 per kWh and buying it for $0.025 per kWh.
If paying for a solar system in full is not possible, many solar installers provide a fixed-interest financing option. Small loan providers, such as Humm & Brighte, are among the most popular solutions.
The length of time it takes to pay off a solar system varies on whether you finance it yourself or use one of the providers mentioned.
The advantages of using a finance option allow you to get solar installed sooner rather than later and, in many circumstances, pay less, if not the same, as you did when you paid your electricity bill to your energy providers. In effect, you would be substituting your energy bill with a finance payback plan over a set length of time, often 3-5 years for a 8kw.
In many circumstances, most solar owners can pay the same, if not less, than their usual power bill, while the solar system pays for itself over time.
If you choose a self-financed solar system, you will have a quicker ROI period. For a 8kw system, you will have to wait 3-4.2 years to return your initial investment.
Other factors to consider while estimating your payback period include…
- How much of your time do you spend at home during the day versus at night?
- Do you intend to add more electricity-using gadgets in the future?
- Do you have to use gas or electric hot water ?
- The amount of sunlight hours your geographical area gets
- How many people live in your house?
When done correctly, solar can be a simple procedure, and accurately determining your payback period is critical to knowing how much you will save over the years you have solar.
What STC's & Rebates Do I Get For A 8Kw In 2022
Rebates, also known as STC certificates, are a mechanism for the government to financially incentivize Australians to go solar. Each state has its own rebate structure in place, and in Queensland, STCs are awarded according to the size of the solar system installed. The larger the solar system, the greater the refund to offset the cost of that system.
The refund decreases year after year, and you will receive less and less compensation from the government. In March 2022, you would acquire 99 STC certificates for a 8kw at a cost of $39.25 each in Brisbane, resulting in a rebate of $3,885.75 that you would be paid for.
However, if you wait one year, you will only earn 88 STC certificates worth $3454. You can Calculate your STC’s At https://www.rec-registry.gov.au/rec-registry/app/calculators/sgu-stc-calculator.
Request a Call Back
Request a call back from a knowledgeable solar specialist. All you have to do is enter your contact information and best available time, and we will call you to see whether solar is a realistic option for your home.
After your call, we will send you a proposal outlining the potential solar savings and costs sent straight to your email.
