BUYER’S GUIDE

Everything you need to know about Solar Systems

How does Solar work?

Solar power systems work by converting the sun’s light energy to usable electricity in your property.

Solar power system requires direct sunlight, not just daylight to operate efficiently. The sunlight triggers a chemical reaction in the panels, and as a result, DC energy is generated.

The inverter then converts the solar panel’s DC power to AC power which you can use.

Solar Panels

Solar panels used for residential purposes are usually 60-cell solar panels. Bigger 72-cell solar panels are also available; however, due to their increased bulk, they tend to be used mainly on commercial and government installations.

Solar Panels generally come with two warranties- a product warranty (which is typically at least ten years) and a power output warranty (which is usually 25 years). It is important to note the critical warranty is the product warranty, as this is the warranty you will be claiming on if your solar panel fails. The power efficiency warranty is a guarantee of the rate of degradation of the output of the solar panel over time.

You’ll often hear the term Tier 1 used to describe solar panels; it is important to note that this is not a measure of the quality of the solar panel. Instead, it is a measure of the financial position of the solar panel manufacturer as rated by Bloomberg Finance.

Solar Inverters

The job of the Solar inverter is to convert the solar energy from your panels into usable AC power. The inverter is the brains of your solar system and regulates the flow of electricity from your panels into your property.

When Purchasing A Solar Inverter You Should Always Ensure The Following:

  • Clean Energy Council approved
  • Meet Australian standards (AS4777:2015)
  • Offers a minimum 10 year product warranty
  • Have an office in Australia

Solar Power System Production

Solar panels used for residential purposes are usually 60-cell solar panels. Bigger 72-cell solar panels are also available; however, due to their increased bulk, they tend to be used mainly on commercial and government installations.

Solar Panels generally come with two warranties- a product warranty (which is typically at least ten years) and a power output warranty (which is usually 25 years). It is important to note the critical warranty is the product warranty, as this is the warranty you will be claiming on if your solar panel fails. The power efficiency warranty is a guarantee of the rate of degradation of the output of the solar panel over time.

You’ll often hear the term Tier 1 used to describe solar panels; it is important to note that this is not a measure of the quality of the solar panel. Instead, it is a measure of the financial position of the solar panel manufacturer as rated by Bloomberg Finance.

System Size

To ensure you maximise the return on your investment, you need to have a solar system that is suitable for your use. If your solar power system size is too small, then you will continue to pay high electricity bills, and if your solar power system is too large, then you will be sending a lot of your energy back to the grid and hence increasing your payback period.

To calculate the ideal solar power system size, you need to identify what your daily energy usage is. You can find this on your electricity bill usually labelled as average daily usage.

This figure is your usage for the whole day (day and night), the next step is to identify what portion of this energy you use during the day. For example, if your average daily use is 40kW and you use 40% during the day, this equates 16kW of use during the day. So in this scenario, we would look at 4-5kW solar power system.

Ozmak Solar will always recommend a solar system that is in line with your usage so that you get the quickest possible payoff period.

Batteries

Batteries store the energy produced by your solar system for use when the sun isn’t shining.

All solar systems are generally compatible with a battery. However, you may require additional components before you can connect a battery system if you don’t have a hybrid inverter, which can add up to $2,500 to the cost of the battery system.

Batteries are available in a variety of sizes and also come in high voltage and low voltage options. You need to ensure your battery is compatible with your inverter.