As a homeowner, you’ve made the smart choice to invest in solar panels. You’ve taken a significant step towards energy independence, reduced your carbon footprint, and are enjoying the financial benefits of lower electricity bills. But like any investment, you want to ensure it’s going to last. One of the most common questions we get asked as Brisbane solar repair specialists is, “How long do solar panels last?”

It’s a valid question. After all, solar panels are exposed to the harsh Australian elements day in, day out. They have to withstand scorching summer heat, torrential rain, and everything in between. So, how long can you expect your solar panels to keep performing at their best? Let’s dive in and find out.

Quick Summary

On average, solar panels can last anywhere from 25 to 30 years. However, this doesn’t mean they stop producing electricity after this time – it just means their energy production has declined by what manufacturers consider to be a significant amount.

The Lifespan of Solar Panels

Solar panels are built to last. They’re designed and manufactured to withstand the elements and continue producing electricity for many years. Most manufacturers offer a warranty that guarantees their panels will still produce at least 80% of their rated power after 25 years.

However, just like any other electronic equipment, solar panels can degrade over time. This degradation rate can vary depending on the quality of the solar panel and the conditions it’s exposed to. On average, you can expect your solar panels to degrade at a rate of about 0.5% to 1% per year.

Factors Affecting Solar Panel Lifespan

Several factors can affect the lifespan of your solar panels. These include:

  • Quality of manufacturing: Higher quality panels will typically last longer and degrade at a slower rate.
  • Installation: Proper installation by a qualified solar electrician in Brisbane can ensure your panels are set up for a long lifespan.
  • Maintenance: Regular solar panel cleaning and maintenance can keep your panels in top shape.
  • Weather conditions: Panels exposed to harsh weather conditions may degrade faster.

Extending the Life of Your Solar Panels

While solar panels are designed to be low-maintenance, there are a few things you can do to help extend their lifespan. Regular cleaning is important to remove any dust or debris that could block sunlight and reduce efficiency. It’s also a good idea to have your system inspected regularly by a professional to identify and fix any potential issues early.

If you’re experiencing issues with your solar panels not working as efficiently as they should, it could be due to a variety of reasons. It’s best to consult with solar panel repairs in Brisbane for professional advice and solutions.

What Happens When Solar Panels Reach the End of Their Lifespan?

When solar panels reach the end of their lifespan, they don’t suddenly stop producing electricity. Instead, their efficiency gradually decreases. By the time they reach 25 years, most panels can still produce around 80% of their original output. So, even after your panels have reached their “end of life”, they can still be useful for producing power.

When it’s time to replace your panels, it’s important to consider solar panel recycling in Australia. This ensures that valuable materials are recovered and harmful waste is kept out of our landfills.


In conclusion, solar panels are a long-term investment that can provide you with clean, renewable energy for many years. With proper installation, maintenance, and care, your solar panels can continue to serve you well beyond their warranty period.

At Solar Repair Brisbane, we’re here to help you get the most out of your solar investment. Whether you need solar panel repairs, solar inverter repairs, or just some advice on maintaining your system, our team of experts is here to help. Contact us today to learn more about our solar panel servicing.


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