Polskie Sieci Elektroenergetyczne

PSE is the transmission system operator (TSO) - defined in the Act Energy Law - as an energy company involved in the transmission of electricity, they are also responsible for: traffic in the electricity transmission system, current and long-term security of the system and operation, maintenance and repair and necessary extension of the transmission network, including connections to other power systems. Polskie Sieci Elektroenergetyczne or Polish Power Grid SA is located in Konstancin-Jeziorna, Poland.