The subject of the project is the modernization of the Krásná Březno converter station in Ústí nad Labem. It is a complementary project to the project Construction of a trolleybus line in Výstupní street, Ústí nad Labem. The Krásná Březno change station provides power to the existing trolleybus network in the area of the local part of Krásná Březno in Ústí nad Labem. After its modernization, not only will sufficient capacity be provided for increased trolleybus operation in this area, but also recuperation will be possible.