Solar panels generally need little routine maintenance, but check your system monitoring regularly for a drop in performance or fault alerts. Keep panels clear of leaves, heavy dirt and bird droppings; cleaning may be useful in some locations, although rain often removes ordinary dust. Have a qualified solar electrician inspect electrical connections, mounting and cabling if you notice damage, unusual noises or a persistent performance problem. Follow the manufacturer’s instructions, and use a licensed professional rather than getting on the roof yourself.