However it is important to be aware that annual service is not “just cleaning of the Solar Panels in every year. On-grid Solar system consists of AC, DC cabling and all sort of protective devices and site inspection must be carried out by an professional in regular intervals to ensure the safety devices and other components are in order for proper function of the solar system and safety operation. Our service team who visits site annually on appointment does all necessary inspections that cover entire system in addition to the cleaning the solar panels.