Solar Panel System Maintenance: How to Keep Your System Running Efficiently

Investing in solar energy is one of the best decisions you can make for both your home and the environment. However, to truly reap the long-term benefits of your solar system, regular maintenance is key. Without proper care, even the most advanced solar panels can lose efficiency and performance over time.

Power your home with Upvolt’s smart solar solutions.

By following a few simple steps, you can ensure that your solar system operates at its peak for years, saving you money on energy costs and maximising your return on investment. 

Solar System Maintenance: What You Need to Know in Brief

• Regular maintenance is important to ensure solar panels operate efficiently and deliver the best return on investment.
• Cleaning solar panels every 6 to 12 months can help maximise energy production, especially in areas with high pollution or dust levels.
• Monitoring system performance using apps like UpVolt’s Skygateâ„¢ allows you to track energy production and address issues promptly.
• Scheduling annual professional inspections ensures that all components, including inverters and wiring, are in optimal condition for long-term performance.

Why Is Solar Panel Maintenance Important?

Many homeowners believe that solar panels require little to no maintenance, but this is a misconception. While solar panels are designed to withstand various weather conditions and are generally low-maintenance, regular upkeep is still important for ensuring they continue to perform at their highest capacity. Neglecting basic maintenance can lead to reduced efficiency, which means less energy production and a lower return on investment.

Solar panels are exposed to the elements year-round, which means they are susceptible to dirt, dust, and debris. Over time, these particles can accumulate on the surface of the panels, blocking sunlight from reaching the solar cells and reducing the system’s efficiency. 

According to the National Renewable Energy Laboratory (NREL), the energy lost annually from dust, soot, and other particulates amounts to as much as 7% in parts of the United States to as high as 50% in the Middle East.

How to Maintain Your Solar Panel System

Proper maintenance doesn’t require a lot of time or effort, but can significantly extend the life of your solar system. Here’s how to keep your solar panel system in top shape:

1. Regular Cleaning of Solar Panels

Rainwater typically washes away dust and debris off solar panels. However, in areas with little rain or high levels of pollution, regular cleaning is essential to ensure the panels operate at peak performance.

Cleaning should be done every 6 to 12 months, depending on your location and environmental conditions. For example, in more urban areas with high levels of pollution—such as London or Birmingham—dust and particulate matter can accumulate on the panels, reducing efficiency. 

How to Clean:

• Remove Loose Debris: Start by removing leaves, twigs, and large debris using a soft brush.
• Wash with Soft Water: Use clean water and a non-abrasive cleaning solution to wash the panels gently. Avoid harsh chemicals or abrasive scrubbing materials, as they can damage the surface of the glass.
• Avoid Cleaning in Direct Sunlight: To prevent damage or streaking, avoid cleaning the panels during the hottest part of the day when the panels are hot. Early mornings or late afternoons are the best times for cleaning.

Note: If you’re unsure or uncomfortable cleaning the panels yourself, consider hiring a professional cleaning service. Professional cleaners have the right equipment and knowledge to do the job safely.

2. Inspecting for Damage

Regular inspections are vital to detect any wear or damage that could affect your solar panel system’s performance. Over time, factors like extreme weather, debris accumulation, or physical impacts can cause issues.

What to Look For:

• Cracks or Chips: Inspect the surface of the panels for visible cracks or chips in the glass. While small cracks may not immediately affect performance, they can eventually lead to water infiltration and more significant damage.
• Loose Mounting Hardware: Ensure that the mounting hardware holding the panels is secure. Loose panels can be a safety hazard and can reduce energy production.
• Signs of Water Damage: Look for signs of water damage around the panel edges or junction boxes. Moisture buildup can cause corrosion and affect the electrical components of your system.
• Physical Obstructions: Check for overhanging branches or objects that may block sunlight, reducing your panels’ efficiency.

3. Monitoring System Performance

Many modern solar systems come with built-in monitoring software that tracks energy production in real time. For example, UpVolt’s Skygate™ app allows homeowners to view their system's performance data and receive instant alerts if energy output drops or a fault is detected, giving users the ability to track energy production and address issues promptly.

What to Monitor:

• Energy Output: Compare your solar system’s energy output with what you expect for your location and panel setup. If you notice a significant drop in energy production, it might indicate an issue with the panels or inverter.
• Inverter Functionality: The inverter is a critical component in converting solar energy into usable electricity. Some systems have a monitoring app that alerts you if there’s an issue with the inverter, such as a malfunction or error code.
• Efficiency Drops: Pay attention to any sudden drops in system efficiency. This could be due to dirt accumulation, shading, or internal system issues.

4. Check the Inverter Regularly

The inverter is responsible for converting the electricity generated by the solar panels into usable electricity for your home. Since the inverter is one of the more sensitive components of your solar panel system, it’s important to check it regularly.

What to Look For:

• Warning Lights: Many inverters have indicator lights that signal when there is a problem. A red or orange warning light may indicate a malfunction or system fault that needs to be addressed.
• Error Codes: If your inverter displays an error code, refer to the user manual for troubleshooting. Many issues, like minor faults or disconnections, can be fixed without a professional.
• Performance: If you notice a consistent drop in performance and the inverter is not reporting errors, you may need to have the system inspected by a professional.

5. Keep the Area Around the Panels Clear

Overhanging branches, leaves, or even bird nests can obstruct sunlight and decrease the efficiency of your solar system. Keep the area around your solar panels free of obstructions to ensure maximum sunlight exposure.

Tips:

• Trim Branches: Regularly trim any trees or bushes that might block sunlight from hitting your panels. Avoid allowing branches to grow too close to your panels, as this can also damage them during high winds.
• Clear Debris: Make sure to remove any accumulated debris or bird droppings around your panels to prevent them from affecting the system's performance.

6. Schedule Professional Inspections

While most maintenance tasks can be done by homeowners, it’s still important to have a professional solar technician inspect your system at least once a year. A professional will be able to spot potential problems that you might miss during your own inspections, such as electrical issues, hidden damage, or panel misalignment.

Why Hire a Professional:

• Thorough Checks: Technicians can perform in-depth electrical tests, check for corrosion, and evaluate the efficiency of all components in the system.
• Inverter Maintenance: Professional technicians have the expertise to repair or replace faulty inverters, a task that requires specialised knowledge and equipment.
• Comprehensive System Health Checks: A certified technician can evaluate the overall health of the solar system and ensure that everything is functioning correctly, addressing any issues that could impact performance.

7. Address Any Performance Issues Quickly

If you notice that your solar panels are not producing as much energy as expected or if there are any issues with the system, it’s crucial to address them as soon as possible. Delaying repairs can result in bigger, more costly problems down the line.

When to Call a Professional:

• If you notice a significant drop in energy production that cannot be explained by weather or seasonal changes.
• If you observe physical damage to the panels, wiring, or inverter that could pose a safety risk.
• If your inverter is showing error codes that you cannot resolve on your own.

What Are the Most Common Issues With Solar Panels?

While solar panels are generally reliable, like any system, they can encounter occasional issues. Recognising and addressing these problems early can ensure that your system operates at peak performance for many years. 

Below are some common issues homeowners may face with their solar panels, along with solutions to keep your system running smoothly.

1. Reduced Energy Production

Problem: One of the most common issues is a noticeable decrease in energy production. This could be due to dirt, debris, shading, or panel damage. Reduced energy output can be particularly evident during sunny days when your system should be performing at its best.

Solution:

• Cleaning: If dirt or debris is the cause, a simple cleaning of the panels should restore performance. As mentioned earlier, the frequency of cleaning will depend on local conditions—such as pollution or the amount of dust.
• Check for Shading: Over time, nearby trees or buildings might cast shadows on your panels, limiting their exposure to sunlight. Trim any overhanging branches or consider relocating panels if possible.
• Performance Monitoring: Using monitoring apps, such as UpVolt’s Skygateâ„¢ platform, can help identify performance dips in real-time.

Inverter Issues

Problem: The inverter is a crucial part of the system, converting the DC electricity generated by the solar panels into AC electricity used in your home. Inverter malfunctions can cause the entire system to shut down or lead to poor efficiency.

Solution:

• Check Inverter Alerts: Most modern inverters send alerts or show error codes when they encounter problems. If you notice issues, check your inverter’s status on the monitoring software.
• Professional Inspection: If you suspect the inverter is faulty, it's recommended to call a professional to check it. Inverters typically last around 10-15 years, so if yours is aging, it might need replacement.

2. Faulty Wiring or Connections

Problem: Over time, wiring or electrical connections can degrade, especially if they’re exposed to extreme weather conditions. Faulty wiring can lead to intermittent power generation or complete system failure.

Solution:

• Visual Inspection: Regularly inspect your system’s wiring and connectors. Look for any visible signs of wear or corrosion. If you’re unsure, schedule an annual professional inspection to ensure everything is properly connected.
• Hire an Expert: If you notice any loose or damaged wires, contact a licensed solar technician to replace or repair them.

3. Bird Droppings and Debris Buildup

Problem: In areas with a lot of birds, droppings can accumulate on the panels and cause significant shading. This can lead to hot spots, reducing the panel's efficiency, or, in extreme cases, cause panel damage.

Solution:

• Regular Cleaning: Clean the panels regularly to remove droppings and debris. Be cautious not to scratch the panel surface during cleaning.
• Bird Deterrents: Install bird spikes or other deterrents around the system to prevent birds from nesting on or near your panels.

4. Hot Spots and Discoloration

Problem: Hot spots occur when a section of the panel heats up more than others, usually due to damage, dirt, or defective cells. These hot spots can cause permanent damage to your panels if left unchecked.

Solution:

• Panel Inspection: Visually inspect the panels for signs of discolouration, cracks, or physical damage. If you spot a hot spot, it may be necessary to replace the affected panel or section.
• Professional Assistance: Contact a solar technician to perform a detailed check of the system. If the issue is severe, they can replace the damaged components.

5. Weather-Related Damage

Problem: While solar panels are designed to withstand harsh weather, extreme conditions like heavy snow, hailstorms, or high winds can still cause damage.

Solution:

• Protective Measures: Ensure that your system is installed with proper protective features, like sturdy mounting systems and strong panel frames. In areas prone to severe weather, consider hiring professionals to reinforce the installation.
• Post-Storm Inspections: After extreme weather events, inspect your panels for visible damage. If you suspect that the panels or wiring have been affected, contact a solar professional for a more thorough inspection.

How Can You Ensure Your Solar Panel System Lasts?

Maintaining your solar panel system is important for ensuring it performs at its best. Regular cleaning, performance monitoring, and addressing issues early help maximise energy production and extend the life of your system. Scheduling annual professional inspections can catch potential problems before they become costly. 

Staying on top of your solar system’s upkeep ensures you get the most out of your investment and enjoy reliable, clean energy for years to come.

About Upvolt

At Upvolt, we specialise in providing smart solar energy solutions designed for homes across the UK. We plan, install, commission, and provide ongoing maintenance to ensure your system continues to perform at its best for years to come. 

Our expert engineering team uses premium-quality equipment to ensure reliable performance, while our innovative Skygateâ„¢ platform optimises energy efficiency with real-time monitoring and support.

Request your free solar panel system quote today!

FAQ

How often should I clean my solar panels?

It depends on your location and environmental conditions. In most cases, cleaning every 6 to 12 months is sufficient. However, if you live in an area with high pollution, dust, or bird activity, more frequent cleaning may be necessary to maintain peak performance.

Can I clean my solar panels myself?

Yes, you can clean your solar panels yourself using a soft brush, clean water, and a non-abrasive cleaning solution. Avoid using harsh chemicals or abrasive materials that could damage the panels. If your panels are difficult to access, consider hiring a professional cleaning service.

Do solar panels require professional servicing?

While regular cleaning and visual inspections can be done by homeowners, it’s recommended to schedule a professional service at least once a year. A technician can check for electrical issues, inspect the inverter, and ensure your system is operating efficiently.

What are the signs that my solar panels need maintenance?

A sudden drop in energy production, error messages on your inverter, visible dirt or debris buildup, and physical damage like cracks or discoloration are all signs that your solar panels may need maintenance. Monitoring apps can also alert you to performance issues.

How long do solar panels typically last?

Most solar panels have a lifespan of 25 to 30 years, though their efficiency may gradually decline over time. Regular maintenance, including cleaning and professional inspections, can help maximise their longevity and performance.

Alex Lomax

CEO & Co-Founder

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