Poland’s PSE completes construction of 400 kV Kozienice—Siedlce Ujrzanow line November 14, 2017 | Europe News Poland’s transmission system operator (TSO) Polskie Sieci Elektroenergetyczne S.A. (PSE) has completed the construction of a 400 kV, 94-km-long line stretching from Kozienice to Siedlce Ujrzanow. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password