The power evacuation system for 1200 MW Teesta II HEP in North Sikkim is being implemented by Teesta Valley Power Transmission Ltd. (TPTL), a Joint Venture company between Teesta Urja Ltd. (TUL, A Govt. of India Enterprise). The evacuation system comprises of 400 KV Double Circuit Transmission line on Quad Moose conductor from Teesta III HEP to Kishanganj Pooling Station in Bihar. With 74% Share, TUL is a majority shareholder while rest 26% is held by PGCIL. The construction of this 215 km transmission line is under progress and once completed, will wheel out the power of 1200 MW Teesta, III HEP and few other projects being developed by private developer.

In addition to above, Power Grid Corporation of India Ltd. is engaged in developing extensive network of transmission system for evacuation of power from other upcoming and operational power projects. Two major subs, stations for pooling of power from different hydel projects coming, up across the state have been constructed by PGCIL. The New Melli 220 kV pooling station and New Rangpo (Samardong) 400/220/132kV pooling stations will wheel the generated power to the National Grid.