Solar Panel Maintenance and Cleaning

solar panel service

Regular servicing and cleaning of your solar system can increase output by up to 12%. And by regular, we only mean once every 2 years...

Inverter or monitoring issues

If you're having problems with your solar inverter or system monitoring, please try out our troubleshooting guide.

Why service your system?

All electrical systems should be inspected and tested periodically, and solar PV and battery storage systems are no different. Here are the key reasons to service your system:

  • Maintain optimal system performance.
  • Achieve anticipated financial returns.
  • Avoid fire risks.
  • Ensure effective earthing.
  • Check for damage to cable and connectors.

As a minimum we recommend testing and inspection should be undertaken once every two years by a qualified electrician, trained in the relevant technology.

We offer a solar panel service on a ‘one-off’ basis, or as part of a more comprehensive package with on-going support. Our prices start from £200 inc. VAT for a single inverter, single phase system up to 10kWp.

"We had solar panels installed in 2011 but our supplier has since gone out of business. Recently, after a squirrel chewed into our loft we decided to get a vermin guard fitted to the panels to avoid any rodent damage to the wiring. We contacted Spirit Energy and they fitted a guard including arranging the scaffolding and also cleaning the panels. They also suggested doing an electrical check and found a problem with the original installation wiring which they have corrected. We found them very efficient, helpful and friendly and will certainly use them again if we need any further work or advice."

- Rob Butler

Cleaning your solar panels, using filtered or de-ionised water

On a sloping array panels will be cleaned by the rain as the glass on the panels is self-cleaning. However, if your panels are in an area of high debris or pollution, or if they are installed on a flat roof, we recommend the panels should be manually cleaned every year or every two years.

Where possible we will clean the panels from the ground using a low-pressure washer and a long lance. In some cases we will use the harness lines already in place on the roof. In other cases we will use a cherry picker.

A study by Google on their system in California suggested that it’s worth cleaning flat roof panels at least once a year at the end of winter; they claim the yield on their flat roof system in particular increased by 36%.

We offer module cleaning; our prices start from £100 inc. VAT for a single inverter system up to 4kWp.

Servicing packages

In addition to one off servicing and / or cleaning, we offer the following packages with a 2-5 year term:

  Panel Cleaning Only Electrical Service Only Workmanship Warranty Extension Only
Panel Cleaning      
Panel cleaning every two years. Where possible we will clean the panels from the ground using a low-pressure washer and a long lance. In a small number of cases we may need to use a cherry picker.  
Inspection and Testing      
Site inspection every two years    
Scope of Inspection and Testing Visit      
Visual inspection from ground level of modules, mounting system, dc cable    
Inspection and testing of inverters    
AC electrical testing of solar PV circuit    
String voltage checks    
Inspection of protection devices    
Inspection of accessible connections    
Full written report    
Workmanship warranty extension      
Free telephone support working hours    
Guaranteed response times    
Extension of Spirit workmanship warranty. No call out fee or labour charges in respect of investigation of system fault caused by our workmanship, inverter or monitoring.    
Free liaison with manufacturer for spares under warranty. Labour costs for installation included.    
Assigned account manager.
Cost (inc. VAT @ 20%)      
Per month(on direct debit) From £5 From £8  From £9.60 
Per year  From £60   From £96  From £120


For electrical servicing, we operate within a 60 mile radius of ReadingBerkshire, and for panel cleaning we cover a 20 mile radius of Reading (further towards West London).

Please call us on 0118 951 4490 to request a price for servicing or cleaning your system.

Homeowner Servicing and Cleaning - Spirit Energy

Areas we cover

For servicing and EV charging, we work within a 20 mile radius of Reading, Berkshire:


For PV and battery installations, please see our service area map.

Call us on 0118 951 4490 to discuss your project, or send in your plans for a free quotation.

FREE Domestic Solar Panel Servicing Guide

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