Commercial Solar System Size Comparison | Infinite Energy

Commercial Solar System Size Comparison

To help you decide which commercial solar system size is right for your business or organisation, we’ve created the easy to read size comparison chart below. Simply select the average amount your current electricity bill comes to, and follow the row across to find out what size model would best suit your energy needs.

I have an average annual electricity bill of… Recommended System Size Avg cost of system No. of panels Power generated How much can I save? Average payback period
$5,000+ 10kW $11,000 – $17,000 30 – 40 40 – 50 units/day $3,000 – $3,500+ annually 4 – 5 years
$10,000+ 20kW $21,000 – $35,000 70 – 80 80 – 90 units/day $6,000 – $10,000+ annually 3 – 5 years
$15,000+ 30kW $32,000 – $55,000 120 – 140 110 – 180 units/day $10,000 – $20,000+ annually 3 – 5 years
$20,000+ 40kW $42,000 – $71,000 150 – 160 170 – 190 units/day $14,000 – $22,000+ annually 2 – 5 years
$47,000+  100kW $130,000 – $200,000 380 – 410 430 – 480 units/day $30,000 – $40,000+ annually 3 – 5 years

Please note this chart has been designed as a rough guide only. A number of additional factors need to be considered including the size of your roof, what time of the day your business uses the majority of its energy, and future circumstances.

Our expert energy consultants will recommend a system size based on your business’s energy usage.


A Note on Cost:

At Infinite Energy we only offer quality solar components from manufacturers with a significant presence in Australia – we refuse to offer cheaper, bottom Tier products. The prices quoted above detail the up-front costs of a commercial solar PV system, which includes installation, associated warranties and Infinite Energy’s five-year whole of system warranty.

There are also a variety of financing methods available including PPAs and Solar Leasing, which allow businesses to install a solar system without the need for capital outlay.


A Note on Power Generated:

Please note that the units for power generated are an estimate only. The amount of power your solar system generates will depend on the amount of sun your building receives, the positioning of your solar system, and what time of the year it is. You can rest assured our expert energy consultants will design your system in such a way that it will receive as much sun as possible, all year round.

Output will also depend on the quality of your system. Systems comprised of higher quality components will operate better at higher temperatures, and produce better results.


A Note on Savings:

The savings listed above are an estimate only, and will directly correlate with how efficiently you’re able to utilise the power your system generates. The more “free” electricity you’re able to use from your solar system, rather than purchase from the grid, will result in larger savings for your business.


Future Circumstances: 

If you’re approaching an upcoming period of growth, you should carefully consider the size of your solar system with your future circumstances in mind. It’s much easier and more cost effective to install a larger size commercial solar system, then it is to expand in the long run. 

Infinite Energy can help you decide the best commercial system size for your business’s energy needs.

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