Unit 2, 1 Annan Business Park, Annan DG12 6TZ
Unit 2, 1 Annan Business Park, Annan DG12 6TZ
As more homes and businesses across the UK make the shift to renewable energy, solar panels are becoming a common sight on rooftops. With rising energy costs and a growing emphasis on sustainability, solar panels offer a reliable and environmentally friendly energy solution. However, like any other major investment, solar panels require proper maintenance to ensure they continue operating at peak performance over the long term.
Neglecting routine maintenance can lead to reduced efficiency, lower energy output, and costly repairs. In this blog, we’ll explore practical solar panel maintenance tips that will help maximise energy production, extend the lifespan of your system, and keep your return on investment strong.
Solar panels are generally low maintenance, but that doesn’t mean they’re maintenance-free. Over time, dust, pollen, leaves, bird droppings, and other debris can accumulate on the surface of the panels, obstructing sunlight and reducing their efficiency. Likewise, weather conditions such as heavy rain, snow, or hail can cause physical damage to panels or mounting systems.
Without regular checks and upkeep, your system may experience:
- A gradual decrease in energy output
- Premature wear or damage
- Inverter or wiring issues
- Increased likelihood of costly repairs or replacement
Proper solar panel maintenance ensures that your panels remain clean, secure, and operating as efficiently as possible throughout their lifespan—often 25 years or more.
The most common maintenance task for solar panels is cleaning. Dirty panels can lose anywhere from 5% to 20% of their efficiency depending on the severity and frequency of buildup. In the UK, pollution, tree sap, bird droppings, and lichen can all reduce sunlight absorption.
- Cleaning Tips:
- Frequency: Aim to clean your panels at least twice a year—once in spring and once in autumn. In rural or high-pollen areas, quarterly cleaning may be more effective.
- Equipment: Use a soft-bristled brush or a sponge on a long handle, along with a hosepipe and mild soapy water. Avoid abrasive tools or harsh chemicals.
- Safety: If your panels are on a pitched or high roof, always consider professional help to avoid the risk of injury.
Remember, clean panels perform better and require less long-term intervention.
While solar panels are built to withstand harsh weather, it’s still important to visually inspect them for any signs of physical damage. Broken glass, cracked cells, loose wiring, or corrosion can all affect performance and may go unnoticed if left unchecked.
Inspection Checklist:
-Cracks, chips, or discolouration on the panel surface
- Loose mounting brackets or hardware
- Signs of water ingress or corrosion
- Faulty or exposed wiring
- Inverter warning lights or error messages
If you spot any of these issues, contact a qualified technician promptly to carry out repairs or replacements.
Most modern solar PV systems come with monitoring tools or apps that allow you to track energy production. Keeping an eye on your system’s performance is one of the best ways to catch issues early.
Performance Monitoring Best Practices:
- Daily checks: Look for significant drops in energy output compared to usual trends.
- Seasonal benchmarks: Energy production will vary by season, but sudden or unexplainable dips may signal a problem.
Inverter readouts: Make a habit of checking your inverter display for error codes or warning lights.
If you notice any inconsistencies, it’s wise to have a professional carry out a diagnostic check.
Even with regular self-checks, a professional inspection can help identify less obvious issues that might compromise your system over time. A qualified solar maintenance provider can:
- Test for electrical faults
- Inspect and secure all - mounting components
- Clean panels with specialised equipment
- Check inverter performance
- Assess overall system efficiency
Scheduling a yearly service helps extend your solar system’s lifespan and ensures all components remain in good condition.
Shading is one of the most significant threats to solar efficiency. Over time, nearby trees or shrubs may grow and begin casting shadows over your panels, reducing their ability to absorb sunlight.
Vegetation Control Tips:
- Trim back branches or foliage that could block sunlight during peak hours.
- Check seasonally—particularly in spring and summer—when plant growth accelerates.
Watch out for leaves or moss that might accumulate near panels or gutters.
Keeping the area around your panels clear enhances energy absorption and reduces the risk of organic debris buildup.
Birds, squirrels, and other small animals can sometimes nest under or around solar panels. This not only creates a mess but can also lead to wire damage or fire hazards.
Pest Prevention Measures:
- Install mesh guards or barriers around panel edges to deter birds.
- Regularly check for droppings, nests, or signs of chewing near wiring.
- Avoid leaving food scraps or organic material on roofs that could attract wildlife.
If pest activity is detected, it’s best to call a pest control specialist experienced with solar systems.
If your system includes a battery storage unit or a solar inverter, these components also require attention. The inverter, in particular, is responsible for converting the electricity generated by your panels into usable energy for your home.
Inverter & Battery Care:
- Keep the inverter in a cool, dry location with adequate ventilation.
- Check battery charge levels and inverter status regularly.
- Clean dust or debris around vents and fans to prevent overheating.
Replacing a faulty inverter can be costly, so preventative care can save money over the life of your solar setup.
Maintaining a log of your solar system’s upkeep helps track its health and can be especially helpful when making warranty claims or selling your property. Include records of:
Cleanings
- Professional inspections
- Repairs or replacements
- System performance readings
- Any inverter or panel issues
This documentation also demonstrates proper care to potential buyers or insurers, adding to the value of your solar investment.
Solar panels are a fantastic investment for any property owner looking to reduce their carbon footprint and energy bills. While they don’t require constant attention, routine maintenance is essential to keep your system operating efficiently for decades to come.
By following the tips outlined in this guide—regular cleaning, monitoring, inspections, and professional servicing—you can ensure long-term performance, safety, and savings.
If you’re unsure about any aspect of solar panel care or would like expert assistance, the team at DRW Electrical offers professional solar panel installation and maintenance services across the UK. We’re here to help you get the most out of your green energy system.
It’s recommended to clean solar panels at least twice a year. However, if your property is located near trees, in high-pollen areas, or prone to bird activity, more frequent cleaning may be necessary to maintain efficiency.
You can clean your solar panels using water, a soft brush, and mild detergent. However, if they are difficult to access or on a steep roof, it’s safer to hire a professional to avoid injury or damage.
Common signs include reduced energy output, visible dirt or damage on panels, inverter error messages, or increased electricity bills. Regular monitoring and inspections can help catch these issues early.
Yes, solar panels still produce energy during cloudy days, although at a reduced rate. Rain can also help wash away dirt, but it’s not a substitute for proper cleaning and maintenance.
Yes, DRW Electrical offers full solar panel maintenance services, including system inspections, professional cleaning, performance checks, and repairs. Contact us today to schedule a service or consultation. https://drw-ltd.co.uk/contact-us/
At DRW Electrical Services, we bring over 25 years of expertise to every project, ensuring top-notch solutions across a wide range of electrical services. From cutting-edge renewable energy systems to comprehensive commercial and domestic electrical installations, our team of specialists is here to meet all your needs.
