The task of the final thesis was to describe the most common procedures for protecting photovoltaic systems with an emphasis on protection against lightning strikes. Due to their dimensions (kW/m2) and installation location, photovoltaic systems are almost always exposed to lightning strikes. This is an unfavorable condition because photovoltaic systems contain sensitive electronics (inverters), which require the introduction of some form of protection against lightning strikes and surges. The second chapter of the final thesis describes the procedure for the importance of implementing lightning strike protection, in two basic categories: when a photovoltaic system is installed on a building that is protected by a lightning protection system and when it is installed on a building that does not have a lightning protection system. Pictures are shown of the method of implementing protection when the facility already has lightning protection installed and it is explained when a type 1 or type 2 arrester is used. The second part shows the concept of surge protection on a building without external lightning protection when the separation distance is respected and when this distance is not respected, and tables are provided for the selection of SPDs depending on where we want to install the protection and depending on what kind of grounding system we are using this protection for. The third chapter deals with the case of lightning protection and surge protection in the case of solar power plants. The procedure for equalizing lightning potentials is described and tables for the selection of surge protective devices are provided. The concept of protection for collecting and evaluating data is also presented, which is very important because it allows the operator to identify and eliminate faults in a timely manner.