 The interconnection initial capacity is 500 MW with transmission capacity upgrade up to 1000 MW possible after completion of second HVDC back-to-back station.The tower 61 near Elk, the tower 160, the tower 166 ( both near Suwalki) and the tower 293 near Sankury have a height of 107 metres.The Alytus HVDC back-to-back station is located southwest of the existing 330 kV-substation which has been extended as well.