Solar Panel Maintenance & Cleaning
Keep your solar investment performing at its best with professional care and monitoring.
Solar panels are remarkably low-maintenance compared to most home energy systems, but they are not maintenance-free. Over time, dirt, bird droppings, lichen, pollen, and general grime accumulate on panel surfaces, reducing the amount of light reaching the cells and lowering your system's output. In rural Wiltshire, agricultural dust and bird activity are particularly common culprits.
Studies consistently show that dirty panels can lose between 15% and 25% of their generating capacity. For a 4kW system producing around 3,920 kWh per year, that equates to 600-980 kWh of lost generation — worth approximately £180-£290 annually at current electricity prices. A professional clean typically costs far less than the energy you recover.
Beyond cleaning, annual health checks are essential for catching problems early. Micro-cracks can develop from thermal cycling, inverters can degrade, and wiring connections can loosen over time. Our maintenance inspections cover the full system: panels, mounting rails, DC isolators, inverter performance data, and earthing continuity. We also review your monitoring data to identify any generation anomalies.
For homeowners whose systems were not installed by Lumos, we offer the same maintenance service. We frequently take over aftercare from companies that have gone out of business or stopped supporting their customers — a frustratingly common situation in the solar industry. Whether we installed your system or not, we treat it with the same care.
Not our installation?
We maintain systems installed by any company — including those that have gone out of business. Your panels still deserve proper care.
Book a Health CheckNo obligation · All brands
Why Maintain Your Solar Panels?
Maximise Generation
Dirty or shaded panels can lose 15-25% of their output. Regular cleaning restores peak performance.
Early Fault Detection
Annual health checks catch micro-cracks, inverter issues, and wiring problems before they become costly repairs.
Protect Your Warranty
Many manufacturers require evidence of regular maintenance to honour long-term performance guarantees.
Professional Monitoring
We review your generation data to spot underperformance trends that you might miss on your own.
Bird Proofing
Pigeons nesting under panels is a common problem in Wiltshire. We install mesh guards to prevent damage and mess.
Peace of Mind
Know your system is working as hard as it should be, every day, without having to climb on the roof yourself.
Maintenance Packages
Choose the level of care that suits your system and budget.
One-Off Clean
Professional deionised water clean for all panels. Ideal for systems that have not been cleaned in 2+ years.
Annual Health Check
Full system inspection covering panels, wiring, inverter performance, and mounting hardware. Written report included.
Annual Service Plan
Combines professional clean + health check + monitoring review + priority callout. Best value for ongoing care.
Bird Proofing
Stainless steel mesh guards installed around panel edges to prevent nesting. Protects cabling and keeps panels clean.
Our Maintenance Process
Book Your Service
Call or email to schedule your maintenance visit. We offer one-off cleans, annual health checks, and ongoing service plans.
System Inspection
We inspect panels, mounting hardware, cabling, inverter performance, and isolator switches. We check for hotspots, cracks, and degradation.
Professional Clean
Using purified deionised water and soft brushes, we clean every panel without scratching or damaging the anti-reflective coating.
Report & Recommendations
You receive a written report with generation data analysis, photos, and any recommended actions to improve performance.
Solar Maintenance Near You
We maintain solar panels across Wiltshire and the South West.
Maintenance FAQs
We recommend professional cleaning every 12-18 months in Wiltshire. Panels in rural areas with heavy bird activity or near farmland may need more frequent cleaning. Dirty panels can lose 15-25% of their output — a professional clean typically costs far less than the energy you recover.
Yes. We frequently take over maintenance for systems installed by other companies — including those that have gone out of business. We inspect your system, identify any issues, and provide ongoing care regardless of who originally installed it.
Our annual health check covers: visual panel inspection for cracks and hotspots, mounting rail and clamp integrity, DC isolator and cabling check, inverter performance data review, earthing continuity test, generation data analysis, and a written report with recommendations.
Yes. Our annual service plan includes one professional clean, a full system health check, monitoring data review, and priority callout if issues arise. It is the most cost-effective way to keep your system performing at its best year after year.
Need Your Panels Cleaned?
Book a professional clean or annual health check. We maintain systems installed by any company across Wiltshire.
Free survey · No obligation · Broughton Gifford, Melksham · Open Mon–Fri 8am–6pm, Sat 9am–2pm