Solar panels serviced they are normally done every 3years.

Hi, As they have no moving parts there is not much to go wrong. A service usually consists of just cleaning the panels unless there is a problem with the inverters. It is possible to fit automatic cleaners that work like a sprinkler system, but I don't know how much these cost or how easy they are to fit. Hope this helps Andy

Most solar panel systems are fine with basic checks and cleaning 1-2 times a year. If you live near a 'wooded' area during autumn & winter months always keep an eye for leaves sticking and covering the panel plate it's self. Solar panels are only cost efficient when they are working at maximum output and for that reason it is best to get them checked and cleaned at least once a year. The solar panels themselves require little to no maintenance once fitted, but out of sight should not be out of mind.

Hi. We have had an off-grid solar-powered house in southern Spain for the past 13 years, so I've got a fair bit of experience of living with solar. The advice given by the two previous respondents is absolutely right. The panels are designed to operate for many years without servicing. Of course, they perform at their best when they are clean. We tend to wash them with warm water with a little washing liquid mixed in whenever they look a bit dusty or get covered with bee poo - oddly enough, something that happens a lot in our heavily-wooded mountain location. Our panels are on a roof to which I can gain easy access. I'd imagine that most houses in the UK have panels that are utterly inaccessible to the average homeowner. As it happens, when I've taken readings at the battery controller, before and after cleaning them, I have never noticed any appreciable difference in the voltage coming in. So even worrying about them getting dirty and losing a lot of power might be something that is overstated. So, generally, you should be able to leave them to 'self-clean' via rain and wind, unless you notice they are getting covered with high levels of dust, leaves or (highly unlikely in the UK) bee poo! FYI The only parts that we need to regularly check are the lead acid batteries and electrical connections between panels, controllers, batteries and invertors. If you are connected to the grid without any such batteries or ancillary equipment, you shouldn't need to worry too much about checking your system. You might be wise to think twice about employing anyone who tries to charge you money for 'servicing' your panels or grid-linked connections/units unless you have an obvious problem with the system.