The Price of a 6kW & 6.6kW Solar Power System (with an important warning)

Trying to work out how much to pay for a 6kW or 6.6kW solar system in Australia isn’t easy.

Many of our customers tell us how steep the learning curve is when trying to choose a system. The good news is it has never been easier to choose a good quality system thanks to record-low prices on the better brands.

6.6kW Solar Sale On Now

Request a solar power quote today and let us help you reduce your power bills with a good quality solar system. Our 6kW Solar Sale includes:

  • Premium solar panels for maximum performance
  • Free system monitoring for the life of your system
  • Technical support
  • Full-service warranties
  • Solaray’s famous hassle-free installation service – it’s why we have one of the highest customer feedback scores in the industry

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Power Bill

Chart of Solary power bill savings
The Solaray Difference’Cheap Solar’All Solaray SystemsSolaray Smart Solar
Decades of reduced power billsUnsureYesYes
Most efficient solar panelsNoYesYes
Full-service warrantiesNoYesYes
Free technical supportNoYesYes
Whole of system warrantyNoYesYes
Free online monitoringNoYesYes
Back to base status alertsNoYesYes
Easily expandableNoNoYes
Work with partially shaded sitesNoNoYes
Panel-level system outputNoNoYes

The Real Price of a 6kW Solar System

Trying to work out how much to pay for a 6kW solar system in 2020 isn’t easy – the solar market is awash with super-cheap 6kW and 6.6kW solar deals at the moment.

Unfortunately, many thousands of Sydney households are now finding themselves in a lot of trouble with these dodgy systems, and we want you to know why before you become the next victim.

Most of the 6kW solar systems you see advertised online are far too cheap – they use no-name panels, and we hear stories every week of people being left high and dry by installers who go belly-up, or simply won’t return phone calls.

This has become such a problem that it is estimated an incredible 1 in 3 solar systems in Australia are unsupported due to either the manufacturer or the installer going under. To give you some idea of the problem we have with cheap solar, here are the number of solar manufacturers currently opperating in Australia compared to 2013:

So How Much Do You Have To Pay To Avoid ‘Cheap Solar’?

The first thing most people do when they search for a 6kW solar system is to find out the price for a full installation. Here are some typical ads you will see in your search results:

And what about this one! The bottom of the solar market just keeps getting cheaper:

If you are new to solar power, your very first online search could have you believing a good quality 6kW solar system costs between $2500 and $4000. The ads above use words like ‘premium’ and ‘tier 1’.

It all sounds great… except it’s not. $4000 is far too cheap for a good quality 6kW solar system, and by considering this price range you are descending into the murky waters of the cheap end of the solar market.

What’s So Bad About A Cheap 6kW Solar System?

From faulty components to dodgy installations and non-existent service. There are thousands of horror stories posted online, and we get dozens of calls a week from people trying to get their system back online after people give up on trying to get help from their original installer.

The strange thing is, most people know about the dangers of buying a cheap solar system. The entire industry often gets a bad wrap because of the reliability issues with these systems. They are often featured on shows such as A Current Affair.

The largest solar installer in Australia in 2017 was renowned for selling cheap solar systems, and it came as no surprise to us when they recently went into liquidation. They have now joined more than 700 installers who have left the industry, in many cases leaving their customers high and dry.

As industry insiders say, the warranties that come with a cheap system aren’t worth the paper they are written on. If your installer and the manufacturer are no longer in business, you will be joining approximately 1 in 3 solar households now know as solar orphans.

Cheap Solar Can Cost You Thousands

LG Solar have estimated in a recent report that you are potentially thowing away tens of thousands of dollars over the life of the system if you fall victim to ‘cheap solar’ like so many households have across Australia.

In the numbers below the system with standard panels has died after 12 years. From over 10 years experience in the industry we can tell you of dozens of cases a week where people are trying to fix systems that are only 3-5 years old.

Here are some of the numbers from the LG Solar report that we would be happy to share with you, just ask one of our representitives for the full document.

Why are there so many 6.6kW solar deals around at the moment?

There are a couple of regulations that have resulted in many solar companies offering a 6.6kW system. Firstly, a home with single phase power is limited to a solar system that is 5kW or less, however, the regulation is actually measured by the inverter’s output, not the panels. That means installers can over-size the panel array in comparison to the inverter. This is something that we do as well, in fact, it is a great way to maximise the output of the system.

The other part of the equation is that the Clean Energy Council has regulated at that an inverter can be over-sized by up to 133%, which means on a 5kW inverter you can have a panel array that is up to… you guessed it… 6.6kW.

The price of a 6kW Solar System

A good quality 6kW solar power system starts at around $5,500 to $6,000 fully installed (finance is also available) including a European Made inverter such as the SMA range, premium solar panels such as Trina Honey 330W modules and a standard installation (ie. no cherry pickers etc.).

It is important to note that with solar panels you generally get what you pay for, and most of our customers choose high-efficiency panels from manufacturers such as LG Solar.

It is possible to find a cheaper 6kW solar system for under $5,500, however, this will typically require buying low to mid-range panels manufactured in China, and often without any after-sales support. It is then an entirely different matter to start looking at systems at around the $4000 mark.

For a larger residential system it is important to maximise reliability, output and of course longevity, and so spending a little more upfront can save you a lot of money over the life of the system. Solaray systems include full-service warranties and full technical support. This gives our customers the peace of mind that if something goes wrong you will be looked after.

As a rough guide, a 6kW system can save you up to around $2,500 a year on your power bills. Of course, to save $650 on a quarterly bill you are going to need to use a lot of power during the daytime – as much as 30 kWh during the daytime over summer. If you are able to get the most out of your 6kW system, you could spend up to $10,000, get a top of the range system, and see a return on your investment in only 4 years!

Request more information & personalised pricing today:

Choosing the right installer

I know what kind of system I want. How do I pick the right installer for me?

Picking the right installer is just as important as picking the right products. Your warranties are only as good as your installer. Post sales service is as important as the initial installation. Have a look through our website or call us.

The cost of a good quality 6kw solar system

If you were to get 3 quotes for a good quality 6kW solar system from reputable solar installers in Australia, you would find that our quotes include similar brands from the top handful of manufactuers, and our prices will all within a few hundred dollars of each other. Yes, there can be slight differences, but for the most part, the quotes will be in the same ballpark.

To put it another way, you won’t find a $7,000 6kW system ‘on sale’ for $4000. Even if you’re happy for the installer to cut a few corners (which you shouldn’t be), you simply can’t get top quality brands for that type of money.

Good quality solar panels have dropped in price to the point that it no longer makes sense to consider the bottom end of the solar market when buying a 6kW solar system. You can have the best solar panels from the world’s leading manufacturers, online monitoring, a professional installation, full technical support, and still get a return on your money in 3-5 years.

Remember, solar power is an investment that should provide clean energy & lower power bills for well over 25 years. You really don’t want issues with the system in the next 3-6 years, as this is just around the time you get your money back.

The output of a 6kW Solar System

According to the Clean Energy Council guidelines, a 6kW solar system in Sydney facing north will produce an average of 24 kWh a day, outputting more power in summer and less in winter.

We have found that this guideline is a conservative estimate and that by using the top brands you can get considerably more out of our system, for example, our Enphase systems give our customers on average 110% of expected output.

On an average in summer, a 6kW system will give our customers around 30 kWh of power. Because this can be too much power for many households, we often recommend considering battery storage so that any excess solar power can then be used during the evening.6kW Solar System Output

How much will a 6kW solar system save me?

The potential savings of a 6kW solar system depend on how much solar power you are able to use in the home at the time of generation. You will typically save around 22 to 30 cents a kWh (depending on how much you pay for your power), and depending on your retailer, you will be paid around 5-12 cents a kWh for the power you send back to the grid. A 6kW solar system can save you up to around $500 to $650 per quarterly bill.

More information is available here: How Solar Power Reduces Your Power Bill

Number of solar panels for a 6kW System

The larger the system, the more important it is to buy quality panels to ensure you maximise reliability, increased output in all weather conditions and the longevity of the system.

The other consideration is roof space. By installing high-efficiency panels, we can use 20 x 330W panels or 17 x 370W panels (instead of 26 x 250W panels like you see advertised).

6kW Micro Inverter System

Enphase Micro-InvertersSolaray is the largest and most experienced installer of Enphase Micro Inverter systems in Australia and our system design team are experts at putting together a professional solar array that will maximise solar output in all conditions.

The main benefit of microinverters is that each panel is independent of the others, making it possible to design an array across different orientations and at different angles. A common panel layout is to have some panels facing north, and the others west to spread the output of solar power across the day, making it easier to use more of the solar power as it is generated. Having panels west is also advantageous if you are on time of use billing, where households typically pay around 50c per kWh between 2 pm and 8 pm for power.

On larger residential systems, the panels in the middle of the array can get quite hot during summer as airflow under the panels is less than ideal. When panels get too hot, the output can be significantly reduced. Because of this, we recommend using microinverter technology and in fact, over 80% of our systems now include this technology. Find out all you need to know about Enphase: 10 key benefits of microinverter systems.

Flexible Solar Array With Microinverters

6kW Solar System on a House With Single Phase Power

In some circumstances, it is now possible to install a system larger than 5kW on a house with single-phase power in NSW. Enphase solar systems now allow us to limit the amount of power your system sends to the grid to 5 kW. This means you are no longer limited to a 5kW solar system. Here are a few options that we would be happy to talk to you about in more detail depending on your location and your specific requirements:

1. We can install a single-phase string inverter up to 5kW with a 6.6kW array of panels. A well-designed solar system can save you thousands of dollars and significantly increase output by oversizing the panel array compared to the inverter. Find out more…

2. If you are interested in Enphase, we can limit the amount of excess solar power that gets exported to the power grid. This allows us to install much more than the 5kW limit. Contact us for more information.

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