T: 01242 620894 E: info@mypoweruk.com

Solar Panel Cleaning Service

Dirty solar panels = Loss of money

A build up of dirt and moss can severely impact the production capabilities of your solar panels. A loss of production will affect payback time and reduce saving and earning potential. To keep your solar PV system working as effectively as possible we recommend that your commercial, industrial or agricultural solar panels should be cleaned every 6-12 months depending upon the environment they are in, with an absolute maximum of 2 years. As 75% of the year’s production is between April & September, we recommend cleaning your panels between mid January and the end of March.

Mypower offer a competitively priced panel cleaning service for all makes of PV modules. Using the new state of the art Karcher rotary brush panel cleaning system we use deionised water and no chemicals or cleaning products (as recommended by panel manufacturers). The Karcher rotary brush is 50% more effective at cleaning solar panels compared to standard mop, brush or cloth. Many people just clean the bulk of the glass but a rotary brush is able to get into the panel edges where algae and dirt really builds and where the diodes are located.

It is extremely important that solar panel cleaning is undertaken by a qualified panel installer. Solar panels can be easily damaged if stood or lent on and too much downward pressure on them will cause invisible micro cracks which will significantly decrease yield. Do not under any circumstances use a pressure washer as this will damage the solar panels.

Did you know?

In April 2017 we completed a before and after study into how panel cleaning can increase output – the results showed a massive 9.6% increase in output following a clean…

  • The customer’s site had 168 solar panels connected identically to 2 inverters.
  • The panels had been cleaned 12 months prior, so only 1 year’s dirt build up was present.
  • Readings were taken for 7 days & 30 days prior to the test to establish any difference in output between the inverters.
  • The 84 panels connected to inverter 1 were identified as rows 1 to 4 of 8, these 4 rows were cleaned and the 84 panels on rows 5 to 8 were left dirty.
  • 2 weeks later, readings were taken again.
  • Inverter 1 with the cleaned panels produced 9.6% more electricity compared to inverter 2 with the dirty panels over the 2 week period.   
  • The remaining 84 panels were then cleaned.  

This data is consistent with the previous year’s findings of an 8.7% increase in yield when the same trial was carried out but with only 5 days between cleans.

The image clearly shows a difference between the cleaned panels in rows one to four and the uncleaned panels in rows five to eight.

Not cleaning your solar panels can have a huge detriment to their output. For advice and a competitive quote please give us a call on 01242 620894 or email info@mypoweruk.com

To see how we do it -

Watch the Karcher solar rotary cleaning brush video below.