What Is Solar Irradiance? | Solar Irradiation & Solar Panels


We all know that sunlight is the key to life on earth but what is it about the sun that keeps us going? The answer is something called solar irradiance.

Solar irradiance is the radiant energy generated from the sun. This energy can be captured using solar panels and turned into useful forms of energy such as electricity and heat. You may know solar irradiance as solar power, solar energy or sunlight!

The 3 Main Types Of Solar IrradianceWhat is Solar Irradiance?

Solar irradiance is transported to earth’s atmosphere through different wave lengths. Here are the 3 main types of wave lengths that we need to survive:

Ultraviolet radiation: is made up of UVA, UVB and UVC. Ultraviolet radiation can be harmful and can reach us from scattered waves in the atmosphere, open reflections or direct trails from the sun.

Infrared radiation: is a type of radiant energy that is invisible to human eyes but we can feel it in the form of heat.

Visible light: is a form of electromagnetic radiation that allows us to see the world around us. Most people refer to this wave length as sunlight.

Solar Radiation and Weather

The deliverance of solar irradiation to earth is also how our weather patterns are formed. Protons and energy particles are delivered into the atmosphere causing uneven heating – similar to the effect of a lava lamp. 

Solar irradiation is not always delivered evenly everyday. This means it can be stronger on one day but weaker on another day even if it’s the same temperature and same type of weather. This is why you can have a high UV day even when it’s cloudy.

What Is The Difference Between Solar Irradiation and Solar Radiation?

Solar radiation refers to the amount of radiant energy emitted by the sun whereas solar irradiance refers to the amount of solar radiation per unit area.

Solar IrradiationSo, What Does It Have To Do With Solar?

Solar photovoltaic (PV) systems absorb solar irradiation and turn it into usable energy for your home. Solar irradiation is only delivered when the sun is out.

So the more daylight hours your location receives the more solar irradiation you will have to create electricity with.

If you are considering installing a solar panel system then it is important to check that your geographical location receives sufficient sunlight hours and solar irradiation.

Luckily for us, Australia has some of the best daylight hours and some of the most uninterrupted solar irradiation in the world due to it’s minimal cloudy weather.

Make The Most Of Solar Irradiance By Installing Solar Panels

Interested in how you can use solar to power your home?

Solar Market connects you with three complimentary solar quotes from CEC accredited solar installers in your area so that you can start using the sun’s energy for free!

Already have solar panels installed? By mapping the solar irradiation throughout the day you can utilise your solar system more effectively. When solar irradiation is at its highest your solar panels will be generating at a better efficiency. Use solar irradiation peaks to plan your energy use.

Request 3 Complimentary Solar Quotes


Take our Solar Quiz Compare Energy Providers and Save

Download Your FREE Ultimate Guide to Solar Power in Australia - 2021 Edition

Beginners Guide to Solar Power

If you’re considering solar for your property or just looking to maximise the savings for your solar system, download a FREE copy of our "Ultimate Guide to Solar Power in Australia - 2021 Edition".

Become an expert and better understand the ins and outs of solar power and solar PV systems for your property.

Includes detailed explanations and diagrams of the various types of solar systems and their parts, solar battery storage systems, Government incentives, expected ROI periods, finance, energy-saving tips and more!

Download Your Free Copy Now!

Latest blog & information


Please provide your email address so that we can send your free copy of "The Ultimate Guide to Solar Power in Australia - 2021 Edition".

* By clicking "Send me a copy" I agree to the terms in TQC’s privacy policy.

Thank you

A link to download your copy of "The Ultimate Guide to Solar Power in Australia - 2021 Edition" has been emailed to the address you provided.

If this message does not appear in your inbox, ensure that you have provided the correct email address or check your junk/spam folder.

This message will close in 10 seconds or

Close and back to page

Understanding Batteries

Off-Grid Systems

For some households a battery system can be of great benefit and minimise a home’s reliance on the grid. However, it’s important to understand for a battery to be useful your solar system needs to be generating excess energy for the battery to store, which you can then use at night or when the sun is not out.

When selecting a battery, you’ll want to invest in a system that is most suited to your home and can drive the best return on investment (ROI). Despite a larger upfront cost, a higher quality battery may significantly increase your ROI.

    Battery systems start from $6,000 and costs can vary greatly based on the following factors:

  1. Cycle Life-Time

    The number of times a battery can fully charge and discharge.

  2. Battery Power (kW)

    How fast it can be charged or discharged.

  3. Storage Capacity (kWh)

    The maximum amount of energy a battery system can store.

  4. Battery Management System (BMS)

    An electronic ‘smart’ system that gathers data and manages the battery ensuring it does not overload or operate outside of its safe functioning zone..

  5. Inverter

    Battery systems require their own inverter if your solar system does not have a hybrid inverter.

  6. 'All-In-One Unit’

    A system which includes the battery, BMS and an inverter all in one unit.

  7. Warranty

    Length of time or cycles the battery system is under guarantee.

  8. Blackout Protection/Backup

    It’s important to note this is not a common feature of a battery system and could cost thousands of dollars to include. Blackout protection not only requires additional components but also a specialised installation and rewiring. For grid-connected homes, the cost for blackout protection can outweigh the benefit.

Additionally, if your purpose for adding battery is to go Off-Grid and become completely independent from the grid you will need to ensure your solar system can generate enough energy to power your home and your battery system is large enough to store this energy. For homes in metro areas going Off-grid is not cost effective and is only recommended for those in remote areas with limited access to the grid. Off-grid solar systems with battery start at approximately $30,000.

[gravityform id="4"]
<p class="gform_not_found">Oops! We could not locate your form.</p>