Faulty Solar Panel Installation

Faulty solar installation can involve low output, inverter problems, unsafe wiring, leaks, poor mounting or aftercare that never arrives.

Why this matters

Solar panels can be a good investment when the system is specified honestly, priced fairly and installed properly. The issue is not solar technology itself. The issue is whether the sale, installation or aftercare matched what you were told.

Installation disputes need practical evidence. The issue may be workmanship, design, commissioning, product failure, roof damage, monitoring problems or a warranty that is not being honoured.

We are not a government scheme, energy supplier or solar installer. Solar Panel Advice Centre helps homeowners organise the facts, understand the likely route and decide whether a free case review is sensible.

Warning signs

Solar installation cabling in loft or garage

panels are not generating as expected

there are inverter warning lights or repeated shutdowns

roof tiles, flashing or fixings look damaged

there is water ingress after installation

cabling, isolators or equipment look unfinished or unsafe

the installer is not returning calls or warranty requests

What to keep

  • photos of panels, roof, cabling, inverter and damage
  • installation paperwork and MCS certificate if available
  • warranty or guarantee documents
  • monitoring screenshots and inverter error messages
  • roofer, electrician or surveyor report if obtained
  • complaint correspondence with the installer
Technician photographing solar panel fixings

The right route depends on who sold and installed the system, what failed, what damage or safety risk exists and what your documents show.

How a free review helps

A free review is designed to sort the issue into the right category before you spend time on the wrong complaint. You can explain what happened in plain English, then add documents later if they are available.

The review normally looks at the sales promise, the written paperwork, the installation position and any aftercare or warranty response.

FAQs

Should I keep using a faulty system?

If there is any safety concern, roof leak or electrical issue, get suitable professional help. Keep records and photos.

Is poor generation always an installation fault?

No. Output depends on roof, shade, weather and usage. It becomes more concerning where design, installation or sales promises do not match reality.

What if the installer ignores me?

Keep a timeline and all messages. Other routes may depend on certification, warranties, workmanship evidence or the installer response.

If the physical system is the problem, collect photos and paperwork and request a practical installation review.