Pre-summer Solar Panel Cleaning and Maintenance

Since February 2025, Absolar Team have rolled out regular maintenance and cleaning work for existing clients. This work will improve the performance of solar PV systems, boosting their productivity, ensuring they are optimised for the upcoming summer season.

--- Sarah Cruickshank, Business Development Manager at Absolar

Clean Panels, Clear Gains: Why Solar Maintenance Matters More Than You Think

As solar adoption grows across the UK, conversations often focus on system design, installation, and financial returns. But one critical factor is often overlooked -ongoing maintenance, particularly the cleaning of solar panels.

While solar PV systems are famously low-maintenance, they’re not “set-and-forget.” Over time, dust, pollen, bird droppings, and other environmental residues can reduce panel efficiency, sometimes significantly. In regions with low rainfall, this effect can be even more pronounced.

The Data Behind Dirty Panels

A 2017 study published in the Open Journal of Energy Efficiency found that panels left uncleaned for a year could underperform by 10–15%, compared to those maintained on a regular cleaning schedule [Abu-Naser, 2017]. Over a full year, this difference can translate into up to 20% more energy production - a meaningful impact on both carbon savings and electricity bills.

For businesses and property owners aiming to optimise their return on investment, neglecting this aspect of care could mean leaving money on the table.

Why Regular Cleaning Pays Off

Cleaning your solar panels isn’t just about aesthetics, it's about protecting performance, extending system lifespan, and ensuring long-term financial and environmental returns. While rain may help rinse off some surface grime, it’s not enough to tackle stubborn or baked-on dirt, especially in urban or agricultural settings.

Key benefits of regular cleaning include:

• Higher energy output and system efficiency
• Improved return on investment (ROI)
• Longer lifespan of panels and associated hardware
• Early identification of minor issues before they become costly

Who Should Consider It?

• Commercial buildings in high-traffic or industrial areas
• Rural sites exposed to dust, agricultural residues, or pollen
• Urban rooftops prone to bird activity or pollution
• Homeowners who haven't checked their panels in 12+ months

Even self-cleaning or tilted systems benefit from periodic manual cleaning, especially during dry spells or in low-rainfall seasons.

How Absolar Can Help

At Absolar, we support businesses and homeowners not just in adopting solar, but in maximising its long-term value. Our professional cleaning service is available to all, including clients who had their panels installed by other providers. Using safe, non-abrasive methods, we help maintain your panels without voiding warranties or risking damage.

Cleaner Panels, Greener Returns

In an era of rising energy costs and growing sustainability goals, every percentage point of efficiency counts. A well-maintained solar system produces more clean energy, cuts reliance on the grid, and makes the most of your initial investment.

If it’s been a year or more since your last solar panel clean, it might be time for a check-up. Contact us to learn more about our maintenance services, and keep your system performing at its peak.

Get in Touch

Whether you're exploring solar options, applying for a grant, or just have a question, we're here to help.

📍 Visit us: Engineering Centre, Southampton Science Park, Southampton, SO16 7NP
📞 Phone: 02382 680 106
✉️ Email: info@absolar.co.uk
🌐 Website: www.absolar.co.uk

👉 Or use our AI-powered solar calculator to request a Remote Solar Survey report for your property.

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