2024 - 2025 
1. Design works (working documentation stage) with individual construction solutions for the protection of the autotransformer, including approval with an expert organization.
2. Construction and installation works:
- dismantling of existing equipment and busbar systems;
- construction of a protective structure for 2AT made of monolithic reinforced concrete;
- installation of an oil collection pit designed to receive the full volume of transformer oil;
- installation of oil drainage channels to divert oil from the oil collection pit into the existing oil sump;
- installation of new equipment supports at the 330 kV switchyard;
- installation of cell-type portal structures;
- construction of a pre-detonation shield made of metal structures around the perimeter and above the 2AT protective structure to prevent direct impact on the protective structure;
- installation of temporary protection structures for openings;
- installation of working and emergency lighting systems for the physical protection structure;
- grounding and lightning protection of the designed equipment;
- installation of autotransformer type ATDTN-200000/330/110-U1 (PJSC “ZTR”);
- installation of a 3-phase 220 kV surge arrester set with operation counters;
- installation of a 3-phase 110 kV surge arrester set;
- installation of busbar systems for 10–220 kV equipment being installed;
- installation of 10 kV switchgear (KRUZ);
- installation of a 0.5 m wide cable tray branch;
- organization of cable connections between different parts of the electrical power distribution process.