How Much Maintenance Do Solar Panels Need in the UK?

One of the great things about solar panels is how little day-to-day attention they need. Once installed, they just sit there quietly making clean power from the sun.

But while solar panels are very low maintenance, that does not mean you can forget about them completely.

In this post, we explain what kind of care solar panels need in the UK, how to keep them in good working order, and when to get them checked.

Do Solar Panels Need Cleaning?

In most parts of the UK, rain is enough to keep solar panels clean. A sloped roof helps water run down and carry away dust and dirt.

But if you live near busy roads, trees, or farmland, you might get more dust, bird mess, or even moss on your panels. This build-up can block sunlight and reduce how much energy your system makes.

The Energy Saving Trust says keeping panels clear is key to making the most of your solar setup.

If you cannot see your roof safely, use binoculars or a drone to check for signs of dirt. If needed, ask a professional to clean them with soft water and no harsh tools.

What Else Can Go Wrong?

The most common issue in the UK is birds nesting under or around solar panels. This can lead to mess, blocked airflow, or even damaged wires.

We recommend reading our Bird Proofing Guide if you see signs of bird activity near your roof.

Other rare issues include:

• Broken glass from flying debris

• Loose wiring from age or poor installation

• Shading from growing trees or nearby builds

How Often Should I Check My Panels?

It is a good idea to check your system a few times a year, especially:

• In spring and autumn

• After strong winds or storms

• If your system’s energy output drops noticeably

Most systems have online monitoring tools that let you track performance. If output is much lower than usual, it could be a sign that something needs attention.

You can also book a professional inspection every 2–5 years, especially if your system is older or out of warranty.

Do I Need a Yearly Service?

You do not need a yearly service unless your warranty or installer recommends it. But a check every few years can:

• Spot small issues before they cause bigger problems

• Keep your system safe and efficient

• Extend the life of your inverter and wiring

Some warranties may require proof of maintenance, so check your documents.

Want to know more? Read our full Solar Panel Installation Guide.

Final Thoughts

Solar panels are one of the lowest-maintenance ways to cut energy bills. With a quick check now and then, you can keep your system working well for decades.

Keep an eye out for bird nests, dirt or shading. And if something looks off, do not wait — get it checked.

Want help looking after your solar system? Contact Solarsmith for support. We are here to help with no pressure, just advice.