Solar Panels Buyer’s Guide

Pick The Most Efficient Solar Panels

  • Solar Panel Performance
  • Module Efficiency & Rating
  • Top Tier-1 Panel Brands
  • Solar Panel Warranties

Solar Panel Buyers Guide

Over the past decade, millions of solar panel installations have been completed in Australia. Offering up to 25 years of performance warranty, most solar modules come with anti-dust Nano-coating. Solar panels are one of the determining factors in your PV system and power savings. Therefore, the selection of module brands should always strike a balance between power efficiency and budget. Here is a solar panel buyer’s guide that you should read and understand more about solar power systems.

Solar Panel Performance

Efficiency & Rating

Top Tier-1 Panels

Panel Warranties

Solar Panel Performance

There are a lot of reasons why Perth is one of the best cities for solar power in Australia.

  • Perth receives an average of 8 hours of sunshine per day throughout the year.
  • The city receives 5.8 hours of peak sunshine per square kilometer per day. This ensures that the PV modules can work at their maximum efficiency.
  • The city has one of the lowest payback periods for solar systems in the country. You can read more about power savings here.
  • Solar panels in Perth receive one of the best government rebates in the country making the initial investment much more affordable.

Module Efficiency & Rating

Panel Efficiency

It should be noted that the efficiency of a PV module is calculated with reference to the area it occupies. And, usually, 90-94% of module efficiency is guaranteed under the performance warranty.

Capacity Rating

Expressed in Watts(W), this is the power output of a module at 25°C. In short, This rating is the amount of power the panel would be expected to produce in 1 peak sun hour.
Regen Power and many other installers offer 415 W panels to maximise the production output from them. Due to the higher capacity rating of these new panels, a standard 6kW solar system becomes a 6.6 kW PV system. This is the advantage of purchasing PV modules with a higher capacity rating. It will lead to higher power generation with less number of units.

Tier-1 Panels

Modules in the market are usually classified according to different tiers. This is an inside-the-industry classification, but solar installers have also started using these classifications since the tiers can be correlated to the quality of brand. This list is released by Bloomberg Finance. In conclusion, tier rankings are based on the following main parameters:

  • Advanced manufacturing processes (use of robotics and automated systems as opposed to skilled labor.)
  • Longevity of the company
  • Production capacity
  • Vertical integration (that is, how much percentage of part production is handled by the company in its own factories. In other words, whether the company is designing and fabricating the panels from the ground-up.)
  • Investment in R&D

Top Tier-1 Panel Brands


Panel Warranties

There are mainly two warranties for solar panels:

At least 97% of the power guarantee is there during the first year. Thereafter a maximum of 0.6% degradation per year. After 25 years, PV panels will be delivering at least 83% of their initial performance.

Performance Warranty

Performance warranty where the company promises a particular output range over a period of years. Usually, this warranty period is 25 years. The below image shows Q-Cells warranty.

Product Warranty

Product warranty During which the product is replaced in case of malfunctions. Usually 10-12 years. This warranty is similar to the warranty all your electronic equipment possesses.

Get A Free Quote

We are one of the leading solar installation companies in Australia, with offices in Perth, Sydney, Brisbane, and Adelaide. If you are looking for a professional solar system installation, drop us a line and we provide a quote with the best solar panels and German/European Inverters.

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