 The substation is connected to the Russian power system with two 330 kV lines to Vostochnaya substation and with one line to Kamenogorskaya substation.It is connected with Finland with three 400 kV cross-border connections to Yllikkälä (two lines) and Kymi (one line) substations.The substation consist of four independent, parallel symmetrical monopole (centre-grounded) back-to-back units, each rated 355 MVA and operating with a voltage of ± 85 kV.