After ENERGOPROJEKT PRAHA completed the update of the Preliminary Design, the completion of Units 3 and 4 began in 2008. As the author of the Preliminary Design, ENERGOPROJEKT PRAHA provides author supervision of the documentation and directly on the construction site throughout the entire project. It participates in the evaluation of changes and prepares amendments to the Preliminary Project. September 2022 marked a significant milestone in the completion of the project – nuclear fuel was loaded into the reactor at Unit 3. ENERGOPROJEKT PRAHA is a major supplier in the Mochovce NPP site in the areas of technical assistance, processing of project documentation for project change approvals, processing of construction documentation, expert opinions, safety documentation, implementation of stress test measures, and all stages of unit performance upgrades.