During construction, ENERGOPROJEKT PRAHA acted as the investor's design supervisor, overseeing project changes during construction. Since the Dukovany Nuclear Power Plant was put into operation, ENERGOPROJEKT PRAHA has been an important supplier in the area of technical assistance, modifications to the initial project, preparation of project documentation for the approval of changes, preparation of documentation for the construction, expert opinions, safety documentation, implementation of stress test measures, all stages of increasing the unit's output, and participation in periodic safety assessments.