Installing solar panels is a smart step toward sustainability and savings, but like any investment, it requires proper care. In this article, we’ll explore why solar panel maintenance is important, how to identify issues with your solar panels, and how much you can expect it costs. We also provide a ready-to-use solar panel maintenance checklist for homeowners and businesses. If you’re considering solar energy (or already have a system), this guide is for you.
Why Solar Panel Maintenance Matters
Solar panels may seem low-touch, but neglecting them can quietly erode performance and increase costs. Below are the key reasons why ongoing solar panel maintenance is essential:
1. Maintaining Efficiency
Over time, dust, bird droppings, pollen and other debris can accumulate on your solar panels. This can reduce how much sunlight the panels receive and lower their electricity output. Even in high-rainfall areas, unclean solar panels can make an impact on efficiency. And while modern panels have hydrophobic coatings, they still benefit from regular inspection and solar panel cleaning.
2. Preventing Small Issues from Becoming Big
A minor fault, such as loose wiring or damaged mountings, can escalate into expensive repairs if ignored. Routine solar panel maintenance checks catch problems early and save you money.
3. Protecting Your Investment
A solar panel system is a long-term investment. Proper maintenance ensures it delivers over its expected lifespan and that the return on your investment remains strong.
4. Avoiding Efficiency Loss & Revenue Drop
Lower performance means fewer kilowatts generated, which translates to less savings or payback. Maintaining your solar panels keeps your system running and generating efficiently.
Common Issues and How to Fix Them
In many cases, you can carry out simple solar panel maintenance yourself, but you must do so safely and correctly. Here’s how, plus a guide on when to call in the professionals.
Shading
Shading is one of the most common reasons for the underperformance of solar panels. Shadows cast by surrounding trees and buildings can block sunlight from reaching the panels, significantly reducing their efficiency. Even if it’s only one panel, this can affect the whole system’s output.
When you get your solar panels installed, the technician will thoroughly check the area before installation to avoid any shady areas.
What you can do: Regularly trimming trees and other vegetation around your solar panels is the best way to avoid shading.
Dirt, dust, and debris
People frequently ask: Do solar panels need cleaning? The answer is yes, solar panels should be cleaned every 6 to 12 months. When your solar panels are dirty, their energy output will be significantly reduced, according to the National Renewable Energy Laboratory, clear solar panels are 25% more efficient than dirty, unmaintained panels This is especially prominent in areas with high pollution or from being near construction sites. Bird droppings and leaves can also contribute to solar power systems underperforming.
What you can do: Ensure you turn your system off first and use a soft sponge or brush with mild soapy water to gently scrub off any dirt. Do not use any abrasives or high-pressure washers, as this could damage the panels. Whilst you can clean them yourself, it is best to call in a professional for the job.
Faulty wiring
Damaged wires can cause energy loss from your solar panels. If you have faulty wiring, you may have inverter failure, shading, and panel degradation.
What you can do: When you notice one of these problems, it’s essential to contact an experienced maintenance team. Promptly addressing these issues ensures the sustained performance and longevity of your solar energy system.
Ageing panels
Solar panels actually degrade very little, offering <0.4% degradation yearly, meaning modern panels will last in excess of 40 years. The best maintenance is to keep the panels clean, running at optimum efficiency and with regular electrical inspections to manage your system with proper care.
What you can do: You can’t stop solar panels from ageing, but good solar panel maintenance helps them perform better over longer periods of time. Keep them clean, check for damage, and replace any faulty parts quickly. If your system isn’t producing as much power as it used to, contact your provider to see if it’s time for an upgrade.
How to Identify Issues with your Solar Panels
If you want your solar PV system to perform at its best, the key is to spot and prevent issues before they happen. Here are a few simple ways to stay ahead:
Install a Monitoring System
A dedicated monitoring tool lets you track energy production and quickly spot any dips in performance. Many modern systems even offer real-time data, making it easier to catch irregularities early.
Carry Out Regular Checks
Keep an eye on your system’s performance and look out for warning signs like reduced energy output or error messages from the inverter.
Contact Your Provider When Needed
If problems persist, get in touch with your solar panel provider right away. They can run diagnostics, make repairs, and help with any warranty-related issues.
Optimise Your Energy Usage
Make the most of your solar power by using high-energy appliances during peak production hours, typically around midday, when your panels are generating the most electricity.
When to Call a Pro
Whilst there are ways to maintain solar panels yourself, if you are unsure, it is always best to contact a professional in the following situations:
- Panels are difficult to access.
- You notice performance drops and can’t find the cause.
- Visible damage, wiring issues, or inverter faults.
Solar Panel Maintenance Checklist
Whether you already have a system or are considering one, here’s a handy solar panel maintenance checklist to follow:
Monthly
- Check the inverter display/status light to ensure all systems are running efficiently.
- Monitor the energy output against what is expected to detect any sudden drops or faults.
Every 3-6 Months
- Inspect for dirt, debris or bird droppings to prevent soiling-related efficiency loss.
Every 6-12 Months
- Clean solar panels – we recommend hiring a professional.
Annually
- Call out a professional for a routine solar panel maintenance inspection to ensure system longevity and warranty compliance.
As Needed
- Trim shading trees and fix loose panels to prevent long-term issues.
How Much Does Professional Solar Panel Maintenance Cost?
Regular solar panel maintenance is key to keeping your system running efficiently and protecting your investment for years to come. By scheduling routine inspections and cleaning, you can keep your panels operating at peak performance, which means more energy generation and lower electricity bills. Well-maintained panels not only boost efficiency but also extend the system’s lifespan, helping you avoid costly repairs or replacements down the line.
At Adept Renewables, the solar panel maintenance cost for most domestic customers (with no specialist access requirements) is just £24.99 per month. This covers ongoing maintenance and professional care to keep your system performing at its best, giving you peace of mind and consistent savings year after year.
Ready to Take Action?
If you’re looking for expert help, choose Adept Renewables for professional solar panel maintenance services. Our specialists can inspect, clean, and optimise your system for maximum efficiency.
And if you’re thinking about going green, we also offer solar panel installation services, helping homeowners and businesses switch to renewable energy with confidence.
Get in touch with our friendly team of experts by submitting our online form, calling 01202 986805 or emailing info@adeptrenewables.com and get a free estimate.
