Polskie Sieci Elektroenergetyczne S.A.
Electric Power Transmission, Control, and DistributionMasovian, Poland1001-5000 Employees
Polskie Sieci Elektroenergetyczne S.A. (PSE) operates as Poland’s transmission system operator, ensuring the safe, efficient, and stable functioning of the national electricity system while participating in the European electricity market. The company oversees a substantial transmission backbone that includes nearly 15,000 kilometers of high-voltage lines and 107 substations. Its headquarters are in Konstancin-Jeziorna in the Masovian region, with organizational units located in Bydgoszcz, Katowice, Poznań, Radom, and Warsaw. As a state-owned enterprise, PSE emphasizes sustainable development and equal treatment of market participants, maintaining an open and transparent dialogue with stakeholders. It is involved in a major program to develop the transmission infrastructure across Europe. A recent development noted in 2026 includes expanding facilities to Choczewo, near Biebrowo, reflecting ongoing infrastructure expansion.