Get your solar system working as it should. Find maintenance, fault diagnosis and inverter support, including help with systems installed by another company.
This check uses only specific service areas stated by the companies. It does not treat a nearby office as proof of coverage. Our reviewed coverage is currently limited.
Selected from reviewed company information. Latest review: 2026-09-19. This is a starting list, not a ranking or endorsement.
Office: By Stair, Scotland
Solar and Wind Applications offers solar PV installation, battery retrofits and maintenance. It also says it can repair PV systems installed by other companies.
Confirm service area directly.
Ask about your projectOffice: Cottingham, Yorkshire and The Humber
East Riding Energy offers solar panel and battery installation and maintenance. It describes Tesla Powerwall installations and UK-wide coverage for commercial solar projects.
Stated area: UK-wide commercial solar projects
Ask about your projectOffice: Margate, South East
WH Renewables describes solar servicing, fault finding and panel cleaning, as well as bird-protection installation or upgrades. It states South East Kent coverage; confirm availability for the specific property and equipment.
Stated area: South East Kent
Ask about your projectOffice: Exeter, South West
Neutral Energy Solutions lists solar PV repairs, maintenance and panel removal and reinstallation for reroofing. It describes domestic and commercial work across the South West, with coverage to confirm for each job.
Stated area: Devon, Somerset, Cornwall
Ask about your projectOffice: Newent, South West
GSM designs and installs solar systems and offers ongoing maintenance support. Its commercial services include solar panel installations and commissioning.
Stated area: Gloucester, Cheltenham, Worcester, Hereford
Ask about your projectOffice: Melton Mowbray, East Midlands
Myriad Heat & Power Products provides commercial solar PV installation and planned maintenance. Its solar service includes panel cleaning, system inspections and inverter fault diagnosis, repair and replacement.
Confirm service area directly.
Ask about your projectTell the repair company what changed and when. Useful information includes the inverter make and model, a visible fault code, monitoring screenshots, the installation date and whether output stopped completely or fell gradually. Share commissioning documents and previous repair records if you have them. A remote monitoring problem, generation problem and battery problem may require different investigations.
Avoid drawing a conclusion from one cloudy day or a single app reading. Ask the company what information it needs to distinguish a reporting issue from a system fault. Do not climb onto the roof, open electrical equipment or disconnect cables to investigate. If equipment appears damaged or unsafe, keep clear and seek qualified assistance.
A fault code alone does not establish that an inverter needs replacing. Ask whether the contractor diagnoses your make and model, checks the surrounding installation and handles manufacturer warranty enquiries. Establish the diagnostic charge before booking. If replacement is proposed, request the reason, the replacement model and an explanation of compatibility with the panels, monitoring and any battery.
Ask whether the quotation includes commissioning, app access, removal of old equipment and applicable documentation. Confirm what product warranty and workmanship cover apply, who registers the equipment and whether additional electrical work could change the price. Compare repair and replacement options where both are available rather than treating the initial hardware price as the whole cost.
Ask prospective contractors explicitly whether they work on systems installed by another business. Provide the original specification and warranty documents, but explain if some records are missing. A company may support some brands or system types and decline others. Confirm whether the first visit is diagnostic only and whether parts sourcing or manufacturer support could require another visit.
Product warranties and the original installer’s workmanship cover are different. Ask the manufacturer or warranty provider about the relevant claim route before assuming a new contractor’s labour is covered. Keep a written record of findings, parts fitted and changes made to the installation for future support.
| Part of the quote | What to establish |
|---|---|
| Diagnosis and travel | Call-out charge, travel area, checks included and whether you pay if no repair is authorised. |
| Labour and parts | Specified work, equipment models, parts availability and charges for additional visits. |
| Roof access | Whether scaffold, lifting equipment or a separate roofing contractor is required and included. |
| Handover | Test results, commissioning, monitoring access, documentation and disposal of replaced equipment. |
| Total and warranty | VAT, exclusions, quotation validity, payment terms and separate parts and workmanship cover. |
Ask what a maintenance visit actually includes: inspection, performance review, fault diagnosis or a defined service schedule. Panel cleaning is a separate scope and should follow appropriate equipment and access requirements. Read our solar panel cleaning guide before booking it as a solution to an unexplained output problem.
If roof repairs require the array to be moved, request panel removal and reinstallation explicitly. Agree responsibility for isolation, storage, roof work, refitting, testing and recommissioning. A general maintenance offer does not automatically include those stages.
For commercial arrays, provide the system size, site access rules, monitoring arrangements and operating constraints. Ask the company which inspection, reporting and response services it provides, what the contract excludes and how remedial work is priced. Clarify responsibility for monitoring alerts and raising faults. Compare a defined service agreement with another defined agreement, rather than a one-off visit with an ongoing contract. Our commercial solar O&M guide provides a detailed contract comparison brief.
Guide reviewed 19 September 2026. For independent maintenance guidance, see Energy Saving Trust. Company services above are drawn from dated company statements, not independent certification.
Solar and Wind Applications explicitly says it can repair PV systems installed by others. Other companies may have restrictions: ask about your equipment model, installation age and available documentation.
Ask a qualified service provider to diagnose the fault and explain repair and replacement options. Do not open an inverter or attempt electrical repairs yourself.
Check that the company serves your postcode, diagnoses your inverter model and accepts systems installed by other businesses. A nearby office is not proof of coverage; confirm the travel charge and visit availability before booking.
Not necessarily. Ask a contractor to assess the likely cause before paying for cleaning as a remedy. Monitoring, equipment faults, shading and surface contamination require different responses.
Ask for a service scope matched to your array, monitoring and site requirements. Confirm inspections, reporting, fault response, exclusions and the cost of remedial work separately.
Ask for the diagnostic or call-out charge, labour, parts, VAT, access costs, proposed work and warranty. Confirm whether a diagnostic visit is chargeable even if you decline the repair.
Tell us about your property and project. We’ll try to match you with local or nationwide installers, confirming the proposed companies with you before sharing details.
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