As part of the Port Polska investment program, Centralny Port Komunikacyjny (CPK) and the national energy network operator, Polskie Sieci Elektroenergetyczne (PSE), have signed a series of agreements to supply electricity to the Warsaw–Łódź high-speed line.
The agreements concern the integration of traction substations into the national electricity transmission system. These facilities will provide the necessary power supply for the Warsaw-Lodz high-speed line, a strategic project for Poland’s transport infrastructure. The cumulative value of the contracts exceeds PLN 46 million, equivalent to approximately EUR 10.9 million.
Under these agreements, PSE will connect two traction substations located along the Warsaw–Lodz route. One of them will be built near the new airport and will be connected to a 400/110 kV electrical substation, currently under construction under the coordination of PSE. This energy infrastructure will have a dual role: on the one hand, it will supply the energy needed to operate high-speed rail transport, and on the other, it will support the airport’s entire power supply.
The substation will provide the energy needed to operate all critical airport components, including the air traffic control tower, the operational coordination center, emergency response and firefighting units, technical maintenance and administration areas, and airport service facilities.
The Dmosin traction substation, located in the metropolitan area of Lodz, will receive electricity from the Stryków station, a 400/220/110 kV transformer facility built by Polskie Sieci Elektroenergetyczne (PSE). These traction substations play an essential role in the energy architecture of rail transport, as they provide the technical conditions necessary for trains to operate on electrified infrastructure.
PSE is responsible for developing the infrastructure connecting to the national energy transmission network, while the design and construction of the traction substations themselves, included in the Port Polska strategic investment package, will be carried out by Centralny Port Komunikacyjny (CPK). Through these facilities, electricity will be distributed and adapted to the voltage level used by the railway traction system.
A reliable energy system is a fundamental condition for the development of the Warsaw-Lodz high-speed line, and the chosen technical solution – 2×25 kV alternating current supply – will create the conditions for passenger trains to travel at speeds of up to 350 km/h. In this context, CPK representatives emphasized the importance of continued cooperation with PSE to implement the next stages of the Y-shaped railway line, designed to connect Warsaw, the new airport, Lodz, Poznan, and Wrocław, contributing to the redefinition of rail transport performance standards in Poland.
The power supply system for the railway infrastructure developed under the Port Polska investment program will operate on the basis of two distinct electrical regimes. Thus, the classic railway lines, which will connect to the new infrastructure segments, will use 3 kV direct current power supply, while the high-speed “Y” railway line will be equipped with a 2×25 kV alternating current power supply system.
This technical solution, applied for the first time at national level, is the most energy-efficient option for high-speed train operation. The implementation of the 2×25 kV standard creates the necessary conditions for passenger trains to travel at speeds of up to 350 km/h, while ensuring high efficiency and stability in the traction network power supply.
The Warsaw-Lodz high-speed line, at an advanced stage
For the construction of the Warsaw-Lodz high-speed line, part of the “Y” high-speed system, at the end of 2025, CPK announced the first tender for a 13 km section located between Kotowice, in the municipality of Brwinów in the Mazovia region, and the airport junction. Also this year, CPK plans to launch procurement procedures for the construction of five other sections of the new line, with a total length of 120 km between Warsaw and Lodz, where preparatory work for the excavation of the high-speed tunnel is currently underway.
As part of the project to build the new high-speed line, CPK will launch a total of eight major tenders, six of which concern major construction works, and two for traffic control systems, telecommunications, and the power supply line.
The Warsaw-Lodz line project has received European funding through the Connecting Europe Facility (CEF) of 64 million EUR for development and construction through an agreement signed in October 2023. The line will be 140 km long and will be built in 12 sections. One of the main elements of the line is the construction of the 4.6 km tunnel in Lodz, which will be built at a depth of 25 meters and 35 meters in the city center. The EUR520.3 million contract was signed in July 2025 with Porr.
It should be noted that the “Y” line will run on the Warsaw-Lodz-Poznan-Wroclaw route, part of the North Sea-Baltic Sea European corridor. According to estimates, the Warsaw-Lodz line will become operational in 2032, reducing travel time from 90 minutes to 45 minutes, and the Lodz-Poznan-Wroclaw section will be operational in 2035. When the “Y” line becomes operational, travel time will be reduced from two and a half hours to one and a half hours.
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