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Detailed reviews and information of the best solar panels, inverters and batteries. Plus hybrid and off-grid solar system reviews and information articles on how solar and battery systems work.

Solar Power Installers | Brisbane QLD

Home > Brisbane QLD

Solar Power in Brisbane QLD

Solar Generation

A solar panel system in Brisbane, which is installed with good access to the sun, can get up to 4.45 kWh of solar energy per kW installed on average per day throughout the year.

Average daily solar output estimate*

This data assumes an optimal 28° pitch for Brisbane, see next section for details on optimal panel angles.

As you would expect from the capital of our sunshine state, Brisbane receives very even sun throughout the year. Whilst the sunshine does drop a little over the winter and the end of autumn months, the rest of the year is quite consistent.

From September right through to February/March you can expect about 4.5-5 kWh of solar energy per day on average with an optimally installed system.

Per kW installed

Full year average: 4.45 kWh

Summer (Jan): 4.97 kWh

Winter (Jul): 3.78 kWh

For a 5kW system

Full year average: 22.25 kWh

Summer (Jan): 24.85 kWh

Winter (Jul): 18.9 kWh

Estimated Daily Solar Production | Per kW installed

Solar Generation Brisbane.png

Optimal panel angle

The optimal panel angle in Brisbane for year round solar production is 28° from the horizontal, and facing due North (0° azimuth). This allows for the most total production throughout the year. However, depending on when you use the most electricity, you may want to consider optimising your installation for different times in the year.

Bear in mind that roofs typically have a pitch of between 15 - 30°, and it usually makes sense if you are installing on a house, to simply lie the panels flat on the roof without changing the angle. This is due to cost, fixing and aesthetics. Installs look nicer when they are flat against the roof, they are more secure, and there is extra costs involved in changing the angle, both in parts and labour.

If you are looking for consistent solar production throughout the year, a system optimised for winter in Brisbane will nearly as much in winter as it does in summer.

Here is a guide to the different production you will get throughout the year with different panel angles:

Winter optimised production | 43° pitch*

Per kW installed

Full year average: 4.29 kWh

Summer (Jan): 4.38 kWh

Winter (Jul): 4.02 kWh

Solar Generation Brisbane | Winter optimised.png

Summer optimised production | 13° pitch*

Per kW installed

Full year average: 4.39 kWh

Summer (Jan): 5.33 kWh

Winter (Jul): 3.33 kWh

Solar Generation Brisbane | Summer optimised.png

* This data is purely theoretical, based on solar irradiance and a 12% derating, every installation is different and should expect different outputs.

Example solar generation

Below is a chart of actual energy generation from an example system in Brisbane. This should help illustrate how a real world system performs in both summer and winter. The graph shows the energy output in 15 min intervals.

2.4 kW system facing north, with a 25° panel angle

Winter solar production - July

Sunny day: 10.8 kWh (4.5 kWh per kW installed). Random day: 6.84 kWh (2.85 kWh per kW installed)

Solar install Brisbane | Winter output.png
Solar Brisbane | Winter output ave day.png

Summer solar production - January

Sunny day: 13.8 kWh (5.7 kWh per kW installed). Random day: 11.33 kWh (4.72 kWh per kW installed)

Solar install Brisbane | Summer output.png
Solar Brisbane | Summer output ave day.png

Battery Systems

For details about installing offgrid and hybrid solar energy storage systems in Brisbane, visit our Battery Systems page.

Solar Installers in Brisbane

Some of the top ranking installers in Brisbane on Google are:

  • MC Solar & Electrical | Eagle Farm QLD

  • QLD Solar and Lighting | Paddington QLD

  • Sunny Sky Solar | Brisbane QLD

Visit our Solar Installer page to see more solar professionals that have provided great insight on our forum.

Cost of Solar in Brisbane

Solar Rebates

Brisbane is in zone 3 for the federal STC rebate scheme. This means that for a 5kW system, in 2019 you are eligible for 96 certificates, which at the current price of around $30, you will receive a very handy $2880 off the upfront cost of your system. See our Solar Price Calculator for up to date calculations of STCs on your specific system size, and for a quote on the total cost of a system.

Take a look at Ch 8. What financial incentives are available? in our Guide to Buying Solar for further details.

Solar Quotes & Prices

If you have a quote for a solar installation in Brisbane, visit our solar forum and you can have your quote reviewed by our team and community.

Examples of some pricing that we have seen for quotes in STC zone 3 in Australia:

  • Panels: 4.95 kW, 18 x 275W ZNShine | Inverter: SolaX 5kW | Price: AUD$6550 gross ($1.3 per W - based on inverter output). Minus $2880 federal STC rebate = $3670 net

  • Panels: 6.6 kW, 22 x 300W Canadian Solar KUPower | Inverter: Fronius Primo 5kW | Price: AUD$8990 gross ($1.8 per W - based on inverter output). Minus $3000 federal STC rebate = $5990 net

  • Panels: 6.51 kW, 22 x 310W Qcells QPEAK | Inverter: Fronius Primo 5kW | Price: AUD$9250 gross ($1.85 per W - based on inverter output). Minus $3000 federal STC rebate = $6250 net

Checkout Ch 5. How much will a solar power system cost? in our Guide to Buying Solar, for more information on cost, and importantly how much you should spend on a solar system.


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