PV Maintenance South East Wales

Why PV Maintenance Matters in South East Wales

A well-designed PV system is a long-term asset – but only if it’s properly maintained. Regular PV Maintenance helps to:

• Maximise generation and return on investment
• Identify faults before they become costly failures
• Maintain warranties and regulatory compliance
• Protect your roof, building fabric and electrical infrastructure
• Ensure the system remains safe for continued operation

Our dedicated PV Maintenance team cover South East Wales and combine electrical expertise with rigorous health and safety practices to protect both your people and your property.

What’s Included in Our PV Maintenance Service

Our PV Maintenance packages are tailored to each site, but typically include:

1. Service and Maintenance of Existing PV Systems

We specialise in the PV Maintenance of existing systems, whether installed by us or another contractor. A typical system we maintain comprises:

• PV panels (modules)
• DC strings wired back to inverters
• In-line connectors (e.g. MC4) and associated cabling
• Optimisers mounted behind panels (where applicable)
• Inverters and associated control and metering equipment

We assess the system as a whole, not just isolated components, to ensure safe and reliable operation.

Professional PV Maintenance in South East Wales

Clean panels generate more energy. As part of our PV Maintenance visit, we can carry out full cleaning of your PV array, including:

• Use of filtered water and soft brushes to protect panel surfaces
• Gentle, top-down cleaning to avoid re-soiling cleaned areas
• Strict avoidance of walking or stepping on panels
• Thorough rinsing to minimise residue build-up

Before cleaning, our operatives visually check for any panel damage (cracks, burn marks, excessive weathering). Any issues are photographed, recorded and reported before work continues.

All panel cleaning is completed under a robust safe system of work, including appropriate access, edge protection or man-safe systems, and the use of fall-arrest lanyards where required. Lone working on roofs is never permitted.

Safety and Condition Verification

A key part of PV Maintenance is confirming that your system is safe for continued service. Our engineers carry out:

Visual Inspections

• Roof mounting system and fixings
• PV panels for damage, shading or soiling
• All accessible DC wiring and connection points
• Inverters, isolators and associated control/metering equipment
• Visible bonding, earthing and secure MC4 connections

Any defects or non-compliances identified during PV Maintenance are clearly documented with photographs and recommendations.

Electrical Testing of DC Strings

Using calibrated test instruments and in line with the Electricity at Work Regulations, we perform meter testing of your DC strings, typically including:

• Open circuit voltage (Voc)
• Short circuit current (Isc)
• Insulation resistance
• Earth continuity

Testing is carried out one string at a time, using appropriate isolation and lock-off procedures, and only by qualified and competent electrical testers.

Functional Testing of Safety Measures

Our PV Maintenance visit also includes functional checks of:

• DC and AC isolators
• Fail-safe and shutdown systems
• Labelling, warning notices and any site-specific safety controls

Where we believe an installation is unsafe, our testers will stop work, make the system safe where possible and immediately notify the client.

Performance & Generation Checks

To ensure your PV Maintenance doesn’t just tick a box but adds real value, we:

• Check the generation readings at the time of the visit
• Compare performance against available historical or monitoring data
• Identify potential issues such as underperforming strings, inverter errors or shading problems

This helps to highlight any underlying issues that might be affecting yield and allows you to plan remedial work where beneficial.

Our PV Maintenance Procedure & Safety Standards

Evans Electrical is a family-run business that prioritises safety and quality over price. Our PV Maintenance process reflects this.

Qualified and Competent Personnel

• All works are carried out by suitably qualified, experienced and competent persons
• PV testing and live-system work is restricted to qualified electrical testers
• All test equipment is inspected before use and maintained to GS38 requirements
• Instrument serial numbers are recorded for traceability in your documentation

Site Preparation and Risk Assessment

Before any PV Maintenance work begins, our teams:

• Assess weather conditions – no roof work in heavy rain, strong winds or icy conditions
• Carry out a site-specific risk assessment and method statement (RAMS)
• Confirm locations of water, power and safe access routes
• Check all tools, harnesses and equipment, and wear appropriate PPE
• Erect necessary signage and barriers around work areas

Safe Access and Manual Handling

• Materials and equipment are lifted to roof level using agreed safe access
• Items are secured to prevent falling and protected with ramps or matting where cables and hoses cross walkways
• Larger items are raised using appropriate rope and team-based handling techniques

Isolation and Lock-Off Procedures

As part of PV Maintenance testing:

• Suitable points of isolation are identified
• Systems are safely isolated and secured (e.g. locked off)
• The operation of voltage testers is proven before and after use
• DC isolators are opened when removing/replacing MC4 connectors
• AC isolators are opened when accessing inverter connections
• Work on live DC circuits is strictly limited to controlled testing using appropriate connectors and methods

We never re-make connections on live DC circuits. PV modules are disconnected and made safe before any such work is undertaken.

Comprehensive PV Maintenance Reporting

Following each PV Maintenance visit, you’ll receive clear documentation that can support your compliance and asset management:

• Completed PV Maintenance Report form
• Schedule of visual inspections and test results
• Details of inverter(s): make, model and serial number
• Details of PV modules: make, power rating, Voc, Isc
• Photographic evidence of any issues found
• Recommendations for remedial works or further investigation

Why Choose Evans Electrical for PV Maintenance?

• Specialist PV Maintenance expertise across commercial and industrial sectors
• Safety-first approach, aligned with the Electricity at Work Regulations
• NICEIC and MCS accredited electrical contractor with strong quality systems
• Family-run, second-generation business with a long-term view on client relationships
• Coverage in South East Wales and the surrounding areas, with responsive support
• Commitment to sustainability, health and safety, and fair employment (Living Wage employer, Constructionline Gold, Cyber Essentials Plus)

Whether you need a one-off inspection, annual PV Maintenance for your asset register, or multi-site PV maintenance across your portfolio, we can build a service around your needs.

Book Your PV Maintenance Visit in South East Wales

Ready to keep your PV system safe, compliant and performing at its best?

Get in touch with Evans Electrical Limited today to discuss your PV Maintenance requirements in South East Wales, arrange a site survey, or request a quotation for ongoing PV maintenance across your estate.