How many solar panels do I need?

Posted in Getting solar

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The number of solar panels you need will depend on how much electricity you use in your home, your house’s roof space and your budget. 

As a general rule, a typical small household (1-2 people) might need a solar system of around 2kW (or ~8 solar panels), a medium household (2-3 people) might need a 4kW solar system (~14 solar panels) and a large household (4+ people) might need a 5kW+ solar system (that’s ~24+ solar panels). 

In general, it never hurts to fill your roof with as many solar panels as you can fit. Of course it’s not always as simple as that though. So let’s look at the factors to consider.


Electricity consumption

It’s important to get a solar system that will generate at least as much electricity as you consume. The more electricity you use at home, the bigger your solar system should be. 

Bear in mind that not only will you use your solar electricity while the sun is up but there will be times when you’re not using all of the electricity being generated by your system. In that case, that excess solar power will be used to charge your solar battery (if you decide to get one too) or be exported to the grid, so you’ll probably need to get a solar system that will generate more electricity than you consume.

The bigger your solar system, the more value you’re likely to get back from it. So if in doubt, we recommend going larger rather than smaller – if there’s room for it in your budget and on your roof!


Roof space

Consider how much unshaded space you have on your roof – solar panels in the shade won’t produce any electricity! And remember, while north facing solar panels will always generate the most power, panels facing east and west can still generate plenty of electricity particularly in the morning and afternoon.



The more panels you get, the more you’ll pay. So try and stay within your budget, without sacrificing quality. 


Ready to go solar?

Thinking about solar? Now is the most cost effective time to add a solar battery too. For example, our mid-sized solar and battery package (including installation) could pay for itself in around 7 years*.

Designed specifically for households adding solar panels and a battery at the same time, the DC Power Co solar and battery package brings world-leading, tier 1 solar panels together with an Australian-designed battery solution in one streamlined, cost-effective package. 

The package comes in a range of sizes depending on your energy needs, household set-up and budget. Plus there are financing options available so you can start saving with your solar and battery system now, and pay it off over time. 

View the solar and battery package

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