Solar Panel Maintenance Guide

Do Solar Panels Need Maintenance?

Yes — but not much. Solar panels are built to be low-maintenance and long-lasting. In most cases, they only need occasional cleaning and a quick check-up to make sure they’re working efficiently. A build-up of debris can block sunlight and reduce output, so giving your panels a clean once or twice a year is usually enough. Some manufacturers also recommend a professional inspection every few years to keep your system in top shape and protect your warranty.

Solar panels aren’t completely maintenance-free, but the upkeep is minimal and it helps them last longer and perform better over time.

Solar Panel Maintenance Checklist

Keeping your solar panels in good condition helps you get the best possible performance and longest lifespan. Here’s a simple maintenance checklist to follow throughout the year:

• Remove surface debris: Dust, dirt, bird droppings, and leaves can reduce your panels’ efficiency. Most of this washes away with rain thanks to a special coating, but an occasional manual clean, using a soft brush or hose, helps during dry spells.
• Inspect for visible damage: Cracks, chips or broken glass can impact performance and may need professional repair. If you spot anything unusual, get in touch so we can advise further.
• Trim nearby trees: Overhanging branches can create shade and lower your system’s output. Keep surrounding trees trimmed to allow maximum sunlight exposure.
• Monitor performance: Use your solar monitoring system to track daily and monthly output. A noticeable drop may indicate an issue that needs checking.
• Check cables and connections: If safely accessible, look for signs of wear on any external cabling. Avoid touching anything if unsure and report any exposed or damaged wires to us so our experts can help.
• Schedule periodic professional checks: A full inspection every few years by a qualified technician can help identify electrical faults or signs of wear and tear.

Are Solar Panels Low Maintenance?

Solar panels are great because they don't usually need any maintenance. However, if there is any large debris like branches left on the panels, it's important to safely remove them so that the panels can continue functioning properly. Smaller debris like dust will be washed away when it rains.

Getting the most from your solar panels:

How long do solar panels last

Do solar panels work in the winter

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Common Signs Your Solar Panels Need Maintenance

Though it’s unlikely you’ll encounter issues with your solar installation, you should consider the following.

Decreased energy production: If you notice a sudden drop in the amount of electricity your solar panels are generating, it could indicate a problem that needs addressing

Visible damage: Cracks, a leak in your roof or loose wiring should be addressed promptly to prevent further damage and decrease in efficiency

Shading issues: If nearby trees or objects are casting shadows on your panels, it can significantly impact their performance. Keeping the area around your panels clear and free from shading is necessary

How Dirt Affects Solar Panel Performance

Keeping your panels clean isn’t just cosmetic; it can make a real difference to performance. Panels covered in dust, bird droppings, or leaves can lose 10% to 30% of their output, sometimes more. That’s a significant drop in efficiency over time, especially if left untreated.

Even a light layer of grime can reduce the amount of sunlight that reaches the cells. Regular cleaning helps protect your system’s performance and return on investment.

Do Solar Panels Need Servicing?

Solar panels aren’t completely maintenance-free, but the upkeep is minimal and it helps them last longer and perform better over time.Just like a boiler or car, your solar panels work better and last longer with occasional check-ups. A well-maintained system is more efficient, meaning it generates more clean energy and helps you get the most out of your investment.

Servicing typically includes:

• A visual inspection to check for damage or wear
• Electrical testing to ensure everything’s working safely
• Cleaning, if there’s a build-up of dirt or debris affecting performance

Even a small drop in output can add up over the years, so it’s worth doing.

Does So Energy Offer Servicing?

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We don’t currently provide servicing directly. But we’re looking into how we can make this easier for our customers, including partnering with trusted specialists. If you’re a reputable solar maintenance provider and want to work with us, get in touch.

In the meantime, we recommend using a certified electrician or installer accredited by MCS (Microgeneration Certification Scheme) to carry out checks. You can find approved providers at mcscertified.com.

How Often Do Solar Panels Need To Be Serviced?

We recommend getting your solar panels serviced every 5 years to keep everything running safely and efficiently.

If your system was installed recently, you might not need a full service straight away,  just keep an eye on your performance readings. Like a car, most solar panels don’t need much attention in the early years, but as the system gets older, regular servicing becomes more important.

If you notice a drop in output or something doesn’t seem right, it’s worth getting a check-up sooner.

How Much Does It Cost To Service Solar Panels?

For a standard residential solar panel system, servicing costs in the UK typically range between £100 and £250 for a one-off inspection and clean. This includes checking for faults, cleaning the panels, and ensuring your system is running efficiently. 

Cleaning alone usually costs £4–£15 per panel, depending on access and location. For a typical 10–12 panel array, expect to pay around £100–£150. 

Some providers offer annual maintenance packages, which may include regular inspections, cleaning, and performance monitoring. These packages can range from £200 to £500 per year, depending on system size and provider. 

It's important to note that costs can vary based on factors like the number of panels, roof height, and regional labour rates.

Currently, So Energy does not offer solar panel servicing directly. 

If you're a reputable solar maintenance provider interested in partnering with us, please get in touch.

Getting Started With Solar Panels:

Types of solar panels

How many solar panels do you need

Roof placement for solar panels

So Energy Solar Panel Warranty

Our solar panels are made in the UK and come with a 30-year warranty, including a 5-year workmanship warranty, so you can be confident in your investment. We’re helping folks up and down the UK invest in energy independence and help lower their bills. If you haven’t made the jump and are ready to take the next step - Get a solar panel installation quote!

Should I Get Solar Panels Installed In My Home?

Getting solar panels installed is a smart move — it’s good for your wallet and better for the planet.

You can generate your own clean energy, reduce your electricity bills, and lower your carbon footprint. It’s a long-term investment that puts you in control of your energy use and helps support a greener future for everyone.