Solar PV systems require very little maintenance. There are no moving parts, so there is very little that can go wrong. The panels are made with aluminium frames and the cells are covered with a special hardened self-cleaning glass. If the modules are installed at a pitch of over 10 degrees, rainfall should be enough to keep them clean. If the modules are installed at a shallower pitch you may wish to clean them periodically. For smaller systems, we recommend that you look at the energy generation meter on your inverter regularly to be sure it is working. The inverter will not degrade slowly. If there is a fault it will stop completely. For larger systems we recommend an inspection of the system every 5 years and continuous monitoring of output. For systems mounted on flat roofs, we generally recommend that they are inspected every 5 years to be sure all fixings remain secure.
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