How Long Do Solar Panels Last On Average


 

In the past few years, there have been several solar PV systems installed by Australian homeowners. Are you amongst one of them who have adopted solar power early by getting a solar PV system from the best solar company Sydney?

Without any doubt, solar PV systems help homeowners save money and reduce the dependency on the grid electricity supply. A question that arises in the mind of most Australians is how long would the solar PV system last?

Before we dive into the longevity of solar systems, it is important to understand solar panel degradation.

What Is Solar Panel Degradation?

  • A solar panel tends to lose its capacity of power generation (output) over a period of time. This is referred to as solar panel degradation.

  • The exposure of solar PV systems to various natural elements like rain, snow, ice, and sunlight is the reason why solar panels degrade performance over time.

  • The best solar system from the best solar company Sydney has a degradation rate of only 0.4-0.5% per year.

  • This means that even after using the best solar PV systems for 20 years, they will function at an efficiency of 90% at present.

Reasons Behind Solar Panel Degradation

  • The solar PV system consists of photovoltaic cells of silicon.

  • With time, small fractures known as micro-cracks start developing in silicon cells.

  • As these micro-cracks increase in numbers, the electrical connections inside the solar PV systems begin to weaken and fail.

Read More: How Long Do Solar Panels Last On Average

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