How long do solar panels last?


Solar panels are a fantastic way to reduce your carbon footprint, and their long lifespan provides great return on investment.

Solar panel lifespan and degradation explained

Most photovoltaic solar panels last up to 25 years before they start to degrade. But what does this mean exactly?

Over time, a range of factors (for example, hotter weather and the natural reduction in chemical potency within the panels) cause solar panels to gradually lose their ability to absorb sunlight and convert it into solar energy.

This is known as “degradation rate” and varies from one brand of solar panels to another. When you explore solar panels for your home or business, it’s worth considering the long-term benefits and savings of investing in a more premium solar panel brand. Our solar panel experts can advise on the brands with lower degradation rates.

The worst degradation rate is .80% per year, but an average to expect is around .50% per year for any panel.

Spotting the signs of solar panel degradation

It’s possible to track (via app or physical trackers) the amount of solar electricity your panels generate. Having a grasp on what is typical for your solar panels will help you notice if they’re not performing at their best. If the amount of energy produced begins to decrease and there is no visible debris or increased shade over your roof, this may be a sign that degradation has started.

When your panels are no longer producing the amount of electricity needed to power your home, that’s another sign that it’s time to replace them.

Solar panel warranties

Typically, you can expect your new solar panels to come with a standard 25-year warranty to cover any weather damage. All solar panel manufacturers have different warranty terms and conditions, but we can advise you on the most suitable and cost-effective option for your property.

After the 25-year period has passed, you might find that you need to invest in new solar panels if you begin to notice your energy bills creeping back up.

Ways to make your solar panels last longer

Solar panels are easy to maintain and have a lower chance of needing repairs because they are built to withstand harsh weather and have no moving parts.

That said, you can help to extend their lifespan by giving them routing care and expert maintenance. Cleaning your solar panels will reduce the risk of cracks and scratches caused by built-up dirt, dust and other debris.

If you have any concerns or questions about solar panel care, please contact our expert team today on 01202 801391. We’re here to help you get the most out of your solar panels for many years to come.

Ready to install solar panels on your home?

To find out more about making the switch to renewable energy for your home, speak to our solar panel installation team today on 01202 801391.