4kW Solar System | Solar Power Experts | Infinite Energy

4kW Solar System

Great for the environment and your bottom line, solar’s the perfect choice for your energy needs. But to ensure you get the most from your investment, it’s important you choose the right system for your budget, lifestyle and location. Slightly more expensive than other solar systems, the 4kW solar system is still a viable option for a small working family. Here are the facts you need to know.

Quick overview


Average cost

$3,660 to $6,900


Number of panels


Power generated

18 units/day


How much can I save?

As much as $270 per electricity bill cycle. However, actual savings are generally in the range of $140 – $220 per bill cycle.

Average payback period

3 to 4 years


Suited to

Small working families with an electricity budget of $300 or more per cycle.

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How much does it cost?

Less popular than 3kW and 5kW solar systems, 4kW solar systems are made in smaller numbers, and are consequently more expensive. A good quality system ranges in price from $3,660 to $6,900. And as with all solar systems, price is a good indication of quality, so if you stick within this price range, you’re more likely to get value for money.

Along with price, you should also consider whether a warranty’s included. Higher quality 4kW solar systems – like the ones we sell – always come with a warranty, as well as Australian based support. Things can go wrong, so it pays to be protected from the outset.

How many panels does it have?

A 4kW solar system has 13 solar panels. If your panels are the standard 1.6m by 1m size, you’ll need about 30m2 of roof space.

4kW Solar System 4kW Solar System perth  4kW Solar System panels

How much power does it generate?

A good quality 4kW solar system generates 18 units per day.

However, the amount of power generated depends on where you live, and how your system’s positioned. Locations receiving more sunlight produce greater benefits, and yields in summer are greater than those in winter. To ensure you get the most from your location, your system should be positioned to absorb as much direct sunlight as possible – shade should be minimised wherever possible.

But don’t panic – our installers know where, and how, to position your 4kW solar system for the best possible results. With their help, your system will absorb as much sunlight as possible, giving you incredible bang for your buck.

How much can I save?

A 4kW solar system can save you as much as $270 per electricity bill cycle. However, actual savings are generally in the range of $140 – $220 per bill cycle.

How much you get back from your solar system depends on your feed-in tariff, as well as the quality of your system. Higher quality systems generate more electricity, increasing your financial benefits. That’s why it pays to buy the best quality panels and inverters you can afford – trust us, it’ll pay off in the long run.

And by using more of your solar electricity while the sun’s shining (and less when it’s not), you’ll get more bang for your buck.

What’s the average payback period?

Assuming you buy a good quality system, a 4kW solar system will have paid for itself in 3 to 4 years. But remember, savings on solar are immediate. As soon as your system’s installed, you’ll be saving on your electricity bills – and that’s what really matters.

What kind of household does it suit best?

If you’re a small working family with electricity bills of $300 or more per cycle, the 4kW solar system’s a great choice.

Choosing the right solar system for your needs can be overwhelming. And there are a lot of shonky operators out there. That’s why, when you call us on 1300 074 669, you’ll get reliable and trustworthy advice on choosing the right system for your needs. So come on, give us a call to get started.

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