March 23, 2023
6.6 kw solar panels

Undoubtedly, the average size of a solar panel system australia is getting bigger day after day. Quite a few years ago, many households only bought 3kW solar panels, which consisted of only 12 panels. However, with the growing demands of the people, a 6.6kW solar system is the new go-to solar PV module for most Australian households and commercial buildings.   

However, the question here is why? Why suddenly a solar system of this size has gained so much attention?

The answer lies in the following reasons:

  • Since solar panel systems are becoming more affordable, buying bigger PV modules is becoming more cost-effective.
  • The more panels you install, the more you can claim the STCs (the Federal Government rebate). In simpler words, you can claim a bigger discount. 
  • When paired with a battery, 6.6 kW solar panels are enough to meet the energy needs of any household. 

Combination of 6.6kW solar system, 5kW inverter, and 10kWh battery

A solar PV module of 6.6kW size is a perfect fit for medium and large families. So many brands offer solar systems of this size in the market, thus making it hard to distinguish between genuine and fake ones.

Think and grow partners with only the best Australian manufacturers, thus offering you the best solar packages – they are both efficient and come with several years of warranty. An average Aussie household needs approximately 20kW/h per day and a 6.6kW solar system can generate somewhere between 17 to 27kW/h of electricity every day. 

Thus, it is safe to say that by installing this system, you can easily generate electricity to meet your power needs, thereby potentially increasing your savings. 

Ideally, the inverter’s output must equal or exceed 75% of the maximum output of the solar panels. It is, therefore, advisable to use a 5 kW inverter since it allows 133% oversizing to match the 6.6 kW solar power system. Thus, you can say that a combination of a 6.6kW solar power system, 10kWh battery, and 5kW inverter is popular due to the following reasons:

  • Presence of advanced lithium-ion battery.
  • Provides a great amount of capacity.
  • Offers fast charging.
  • You can easily use the stored energy to power your house during peak hour rates. 

What is the average cost of 6.6kW solar panels?

Switching to solar is a smart and efficient way to do some potential savings and get rid of your dependence on the grid. However, the place where you live and the brand you choose can significantly impact the price of the panels to be installed on your roof.    

You have to invest approximately $5,500 to $10,000 for a 6.6kW solar PV module. The table mentioned below gives an approximate figure of the amount that you need to spend for a solar system of this size in different Australian cities. 


What is the output of a 6.6kW solar PV module?

In an ideal situation, 1kW of solar panels can generate 4kWh of power every day. So you can say that a 6.6 solar power system can generate somewhere around 26.4kWh of electricity every day. This amount of power is quite sufficient to meet your energy usage needs. 

The table below mentions the output given by a solar system of this size in major Australian cities. 


To summarise, a solar power system of this size comes at a cost-effective price without breaking the bank. Plus, the system’s output is sufficient to meet the energy requirement of any residential home, making a 6.6kW solar panel the new solar sweet spot. 

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