solar panels

How Long Do Solar Panels Last?

Solar panels have become an increasingly popular way for households and businesses in Australia to generate their own electricity and reduce their reliance on grid power. Solar power is an incredible resource, and solar panel manufacturers are working to ensure the solar industry keeps up with the demand. As solar panel technology continues to improve and become more affordable, many people are wondering: how long do solar panels last? What is an average solar panel lifespan? How do you prevent solar panel degradation? If you’re wondering how long solar panels last in Australia, you’ve come to the right place.

In this blog post, we will answer the question “how long does a solar panel last?” and explore the lifespan of solar panels, the factors that affect their longevity, average solar panel output, and how to ensure that your solar panels last as long as possible.

How Long Do Solar Panels Last in Australia? 

The life expectancy of solar panels in Australia can vary depending on factors such as the quality of the panels, the manufacturer, and the climate, but most solar panels are designed to last for at least 25 years and can continue to generate electricity for many years beyond that.

Lifespan of Solar Panels

Solar panels are designed to last for many years, with most manufacturers offering warranties of 25-30 years or more. However, the actual lifespan of a solar panel can vary depending on several factors, including:


The quality of the solar panel and the components used in its manufacture can affect its lifespan. High-quality solar panels made with durable materials are likely to last longer than lower-quality panels.


Proper solar installation is crucial for the lifespan of solar panels. Panels that are installed incorrectly or in a way that exposes them to excessive heat or moisture may not last as long as panels that are installed correctly.


The climate in which the solar panels are installed can also affect their lifespan. Panels installed in areas with harsh weather conditions, such as extreme heat or cold, high winds, or heavy rain, may not last as long as panels installed in milder climates. These solar panels degrade faster than those in more stable climates.


Proper maintenance, such as cleaning the panels and checking for damage, can help to extend the lifespan of a solar panel. Panels that are not maintained properly may not last as long as panels that are regularly checked and cleaned.

The value of your Sydney home will increase

Access to government rebates to help cover the cost of your system

Greater independence and less reliance on your energy retailer

Factors That Affect the Longevity of Solar Panels

There are several factors that can affect the longevity of solar panels, including:


Over time, solar panels can degrade and lose some of their efficiency. This is caused by exposure to sunlight, which can cause the materials in the panels to break down. Most solar panels are designed to lose no more than 1% of their efficiency per year, but this can vary depending on the quality of the panel and the conditions in which it is installed.

Mechanical Damage

Solar panels can be damaged by hail, falling branches, and other debris. Even small cracks or scratches on the surface of a panel can affect its efficiency and lifespan.


Moisture can also damage solar panels over time, especially if it seeps into the electrical components of the panel. Proper installation and maintenance can help to prevent moisture damage.


Corrosion can occur if the panel’s protective coating is damaged or if the panel is exposed to harsh chemicals or saltwater. This can affect the efficiency of the panel and shorten its lifespan.

How to Ensure Your Solar Panels Last as Long as Possible

To ensure that your solar panels last as long as possible, there are several steps you can take, including:


  • Choosing high-quality solar panels made with durable materials.
  • Ensuring that your solar panels are installed correctly by a licensed and experienced installer.
  • Regularly cleaning your solar panels to remove dirt, debris, and other contaminants that can affect their efficiency.
  • Checking your solar panels regularly for signs of damage, such as cracks or scratches, and repairing them as needed.
  • Avoiding harsh chemicals or saltwater that can cause corrosion.
  • Consider the climate in which your solar panels are installed and take steps to protect them from extreme weather conditions.
  • Following the manufacturer’s recommended maintenance schedule to ensure that your solar panels are functioning at their best.

Average Efficiency of Solar Panels

On average, solar panels have an efficiency rate of around 15-20%, meaning they are able to convert approximately 15-20% of the sunlight they receive into usable electricity.

In conclusion, solar panels can last for many years with proper installation, maintenance, and care. The longevity of a solar panel can be affected by several factors, including quality, installation, climate, and maintenance. Understanding these factors and taking the necessary steps to protect and maintain your solar panels can help to ensure that they last as long as possible.

Investing in high-quality solar panels and working with a licensed and experienced installer can help to ensure that your panels are installed correctly and in a way that maximises their lifespan. Regularly cleaning and inspecting your panels for damage, such as cracks or scratches, can also help to extend their lifespan and ensure that they are functioning at their best.

By taking care of your solar panels, you can not only ensure that they last as long as possible but also maximise their energy production and reduce your reliance on grid power. With solar energy becoming an increasingly popular option for households and businesses in Australia, understanding the lifespan of solar panels and how to care for them is crucial to getting the most out of your investment and helping to create a more sustainable future for the planet.

Frequently Asked Questions

How long do your Sydney solar panels last?

Around 25 years, provided they’re well-maintained. Solar panels need to be regularly cleaned and serviced, whether by yourself or a professional.

What types of houses are compatible with solar panels?

Generally, most homes are compatible with solar panels. Homes with south-facing roofs may not be ideal for solar panels — but there are options, such as ground-mounted panels as alternatives.

What type of solar panel is best for residential use?

The easiest way to find out which solar panels might be best for your home is to contact our customer service team. They’ll walk you through our product range and match you with the right product.

How do I find the best residential solar installer in Sydney?

Are you considering installing a solar system for your NSW home? Then you’ll want to find the right solar installation company that offers the most experience and know-how.

The best solar installers will give you valuable advice on solar batteries, panels and the most effective systems to store solar energy.

Sunbrite Solar gives you access to the best residential solar installers in Sydney and across NSW. 

Get a FREE quote today and find a trusted and certified team who will install your solar system for less. 

What are the benefits of paying for residential solar panel installation?

Going solar has never been a more cost-effective and accessible option for residential homeowners!

By investing in solar panel installation and the best solar PV system, homeowners can power their homes with clean, renewable energy while potentially lowering their electricity bills. 

Additionally, using solar energy helps to reduce our reliance on non-renewable energy sources such as fossil fuels, thereby reducing our carbon footprint and mitigating the effects of climate change. 

Solar panels also require minimal maintenance and have a long lifespan, making them a smart investment for the future. 

With government incentives and financing options available, there has never been a better time to make the switch to solar power in your home.

What’s the cost of residential solar panel installation in Sydney?

You can find out the price of a residential solar installer in Sydney with our free solar quote system. 

Simply submit your details and we’ll provide you with a range of qualified solar installers and their quotes.

You’ll be free to explore these prices and find the one that suits your needs and your budget. 

When estimating the cost of your residential solar battery installation, an additional factor to consider is how much the right solar battery installation will save you on your electricity bill. 

Generating and storing this renewable energy is an unbeatable way to minimise your energy bills – and you can even sell excess solar energy back to the grid! 

So while there will be some initial outlay for your solar PV system, getting real value for money on your installation and the savings you’ll enjoy over time will make this a great investment!

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