The Czech Republic has 3217km of electrified lines, 1796km of which are equipped with the 3kV dc system and 1374km with 25kV ac. The 3 kV network covers the northern part of the country reaching the Polish and Slovakian borders, where connecting lines are also 3kV. Slovakia is planning to convert its remaining 3kV lines to 25 kV, including the main corridor through the High Tatra Mountains to the steel city of Košice.
The Czech Ministry of Transport and infrastructure manager SŽDC launched a feasibility study last year into the possibility of converting all remaining 3kV dc lines to 25kV ac.
The deadline for expressions of interest in the tender is September 29.