When selecting an inverter for your solar panels, choose from the leading brands. It enhances the efficiency of your solar system. A good-quality 5kW single-phase solar inverter costs $1,320 – $2,500. A 3-phase. Contact online >>
When selecting an inverter for your solar panels, choose from the leading brands. It enhances the efficiency of your solar system. A good-quality 5kW single-phase solar inverter costs $1,320 – $2,500. A 3-phase...
Head OfficeLevel 2/66 Victor Cres, Narre Warren, VIC 3805Victoria52 Hallam South Rd, Hallam 3803New South Wales6 Greenway Dr, Tweed Heads 2486Western Australia27 McCombe Rd, Bunbury 6230South Australia53 Tapleys Hill Rd, Hendon 5014Queensland66 Rene St, Noosaville 4566
A modern-day 5kW solar system will be comprised of between 15-20 panels. It will also require about 25-35 m2 of roof space, depending on the wattage of the panels and how they''re tilted. Solar panel sizes vary depending on brand and whether they are designed for commercial or residential use, but most commonly panels are around 1.7 metre by 1 metre on a 5kW system.
Australia is home to some of the lowest solar system prices in the world, thanks to a broad combination of global and local factors. According to the Solar Choice Price Index, the average cost of a 5kW solar system in Australia as of July 2023 is about $1.13 per watt – or about $5,640– after the STC rebate has been deducted and including GST.
Below, you can see the full breakdown of how that average cost varies by capital city in Australia.
The graph below shows how the cost of a 5kW solar system has declined over the past decade. It''s broken down by state capital cities around the country.
Depending a number of factors, the actual power output of a 5kW solar power system will vary. These factors include:
As mentioned in the first point above, different areas receive different amounts of sunlight. The amount of sunshine falling on a solar panel array has a direct impact on the system''s output. As a rough figure, a rooftop in Australia can expect to receive around an annual average of 4.5 hours of ''peak sun'' (peak sun hours, or PSH) per day. This number may range as high as 5.8 PSH per day in places like Darwin or as low as 4.2 PSH per day in Tasmania. It is important to keep in mind that there will be more sun in the summer and less in the winter months.
Example: An optimally tilted, 85% efficient, north-facing 5kW solar system in Sydney, for example, would produce about (3.5 PSH x 5kW x 85% =) ~15kWh of power on a day in the peak of winter, whereas in the summer output from the same 5kW solar system would be around (6.2 PSH x 5kW x 85% =) ~26kWh. (Figures are only to be taken as rough estimates.)
The financial returns from a 5kW solar installation are a bit harder to work out, and mainly contingent on whether or not a solar feed-in tariff is available to the owner/operator of the system. Solar Feed-in Tariff schemes pay solar system owners a set amount for each unit of solar power that they export to the electricity grid.
There are network limits on whether you are allowed to export energy from your Solar PV system, and feed-in-tariffs available also vary greatly state to state.
Using Solar Choice''s Solar PV System Return on Investment Calculator, we''ve calculated indicative payback periods, annual internal rates of return (IRR) and annual savings (in year 1) using 5kW solar systems for common usage situations in some major cities based on average system prices as of July 2023.
Payback times depend heavily on the amount of solar energy that you consume directly vs export to the grid (''solar self-consumption ratio''), so we''ve included both ''low'' (30%) and ''high'' (50%) scenarios.
If you do not or cannot use much electricity during daylight hours, you''re more likely to be on the ''low'' end of the self-consumption spectrum, while if you do use a lot of energy during the day (e.g. because you''re home or because you can run devices like dishwashers while you''re away) then you may be on the ''high'' end.
Since 2008 our knowledge and sophisticated software has allowed over 350,000 Australian households and businesses to make a well-informed choice on their solar & battery installer.
Hi, I have a 3.75 kWh solar system with a 5kWh inverter I work during the day so I use all the electric at night, would it be better getting battery storage installed
The financial return for batteries (even in your case where you are using energy at night times) is still challenged by the high cost of batteries.
To understand this better I recommend reading this article where in-depth look at Are solar batteries worth it?https://
I have a brand new 5 bedroom double storey house with perfect northern facing space for panels in western sydney. Currently, it’s my wife and I plus a 4 year old son. We have a large ducted system and all the usual mod cons of a family home. I was looking at a 5kw system. Do you think that would be sufficient? Thank youLathen
A 5kW solar system would probably work fine for your home – it’s currently the most popular system size in Australia and offers great value for money. You might even benefit from going a bit larger.
If you’re after some quotes, feel free to fill out our Quote Comparison Request form – you’ll have instant access to installation prices from installers who operate in your area.
Alternatively, feel free to give us a ring on 1300 78 72 73.
just a question how much power can i put in my 5kw inverta it says 4000w per mppt the inverta has 2 the max power output i have is about 4kw with about 4.8 input in summer time living in townsville queensland any kind of information would be helpful
Hi Stevan,Thank you for your comment. It is always best to speak with manufacturer to get technical advice on products as each brand is slightly different. You can search the brand name followed by Australian contact to get their head office details
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