On June 9, 2010, the 220kV switch yard of Srepok3 Hydropower Project undertaken by CNTIC has been formally put into operation and all the electrical equipments are in normal working. Currently, except for the main power transformers, the two transmission lines and the electrical equipment in the switch yard all are in live running. It’s transmitted from the up Buon Kuop switch yard and to lower Sprepok 4 station through the Srepok 3 switch yard.