The analysis of rocket and artillery strikes on the energy complex of Ukraine since February 24, 2022 has been carried out. It is shown that most of the country’s energy infrastructure has received some kind of damage. Based on this, an analysis of the ammunition used for strikes was carried out, and their main characteristics were given. The analysis showed that most of the weapons have a high-explosive and fragmentation effect. The main structures for protecting open technological installations from fragments are considered. The main calculation methods for determining the probability of object hitting (an open technological installation) by a fragmentation field are considered. On the basis of the analysis, calculations of the damage probability and the possibility of protecting technological installations from frags were made. It is shown that the use of a protective structure makes it possible to reduce the probability of hitting an object at extreme distances up to 80% with a protection area of 10% of the vulnerable area to 99% with 90% of the vulnerable area.