Professional Solar Panel Maintenance in Burnley

Even the best solar systems benefit from periodic maintenance. Our annual health checks include panel inspection, inverter diagnostics, wiring integrity tests, and generation performance analysis against expected output. If your existing system was installed by another company and isn’t performing as expected, we offer independent assessments and can retrofit upgrades including new inverters, optimisers, or additional panels.

Why Solar Maintenance Matters

Solar panels are often marketed as “maintenance-free” — and while they certainly require less upkeep than most home energy systems, ignoring them completely means you’re likely losing money without realising it.

A study by the Solar Energy Industries Association found that unmaintained solar systems can lose 15–25% of their output over time due to soiling, component degradation, and undetected faults. In Burnley’s climate, where moss, lichen, and bird droppings are common, regular cleaning and inspection ensures your system generates every possible kilowatt-hour.

Our Annual Health Check Service

Our comprehensive annual service covers every component of your solar installation:

Panel Inspection and Cleaning

• Visual inspection for cracks, delamination, or hot spots
• Professional cleaning with deionised water and soft brushes
• Checking mounting clips and frame integrity
• Assessing for bird nesting or pest damage beneath panels

Electrical Testing

• String voltage and current measurements
• Earth continuity and insulation resistance testing
• DC isolator switch inspection and operation
• AC connection verification at the consumer unit

Inverter Diagnostics

• Error log review and fault code analysis
• Fan operation and cooling system check
• Firmware update if available
• Generation data comparison against expected output
• Component lifetime assessment (capacitor health)

Performance Report

After every service, you receive a written report covering actual generation versus expected output, any faults or degradation detected, recommended actions (with costs), and projected savings from any recommended improvements.

Common Issues We Fix

Inverter Failure

The inverter is the most likely component to fail in a solar system, with a typical lifespan of 10–15 years (compared to 25+ years for panels). Symptoms include the red fault light on your inverter, a sudden drop in generation to zero, unusual buzzing or clicking noises, and error codes on the display.

We carry replacement inverters from major brands (Solis, SolarEdge, Fronius, GivEnergy) and can usually complete a swap-out in a single visit.

Underperforming Panels

Individual panels can underperform due to micro-cracks from thermal cycling, hot spots caused by partial shading, faulty bypass diodes, or degradation beyond normal aging. We use thermal imaging to identify problem panels non-invasively and can replace individual units without disturbing the rest of your array.

Wiring and Connection Issues

Loose MC4 connectors, degraded cable insulation, and corroded junction boxes are common on systems over 5 years old. These issues cause resistance in the circuit, reducing overall output and potentially creating fire risks. Our electricians test every connection and replace any degraded components.

Retrofit Upgrades

If your system is more than 5 years old, there may be cost-effective upgrades available:

• Inverter upgrade: Modern inverters are more efficient and often include built-in monitoring that older models lack
• Power optimisers: Adding panel-level optimisers can recover 10–25% output lost to partial shading
• Additional panels: If you have spare roof space, adding panels to your existing system is usually straightforward
• Battery storage: The most impactful upgrade — store daytime surplus for evening use and increase self-consumption from 40% to 80%+

We assess whether each upgrade makes financial sense before recommending it. If your current system is performing well, we’ll tell you — not try to sell unnecessary additions.