No, they are not. Good quality solar panels, like the ones used by Trishla, are angled sturdily, are water resistant, and do not have any moving parts. This gives them the ability to withstand external pressures of all sorts, ranging from wind, dust, and rain to even monkey menace and more. Improper installation, extreme pressure or lack of care given to solar panels, however, may result in them losing this immunity, so best advice is to give good and regular maintenance.