12. 6. 2024

The first Temelín Unit produces electricity again. It has been shut down for two months to inspect and replace fuel assemblies

Yesterday in the evening, the Unit 1 of Temelín NPP started to produce electricity again. Operators have connected it to the transmission system after replacing a quarter of the fuel assemblies. Power engineers also checked the safety systems the turbine an its generator. In total, they managed almost twenty thousand activities during the shutdown, including 66 investment actions. Together with the Dukovany power plant, all six nuclear units are currently in operation. The Unit 2 of the Dukovany Nuclear Power Plant is now planned to be shut down for the inspection and refueling.

The Temelín's Unit 1 began to deliver electricity into transmission grid again at the 50 % of the reactor rated power. It should reach full power within a few days. There are still a few more verifications to be made during the startup.

"For example, tests on eighty per cent of reactor power, where we check the even distribution of the reactor power. We will also monitor other equipment, especially the turbine, where hundredths of millimeters are decisive in operation,"

said Jan Kruml, Director of the Temelín Nuclear Power Plant.

During the outage, the power engineers replaced 48 out of 163 fuel assemblies, checked safety systems, the turbine, the generator and carried out 66 investment actions. Including the external suppliers, around a thousand people were involved in the outage works.

"Currently, the personnel capacities of our suppliers involved in the outage have moved to Dukovany, where the regular outage of Unit 2 is underway. At both plants, we are using the outages not only for inspections but also to further improve the condition of the equipment. This is because we have to ensure at least 60 years of operation of both our power plants, as well as increase their safety and efficiency,"

stated Bohdan Zronek, member of the ČEZ Board of Directors and Director of the Nuclear Power Division.

The next outage awaits Temelín in autumn, when Unit 2 will undergo inspections and refueling.



Since the beginning of the year, the Temelín power plant has produced 6.7 terawatt hours of electricity. Together with Dukovany, these sources produce the most significant amount of clean electricity and thus contribute significantly to ČEZ Group's emission-free production. Annually, approximately two tens of millions of tons of CO2 have not been released into the atmosphere thanks to nuclear power plants.