KATHMANDU, Nov 27: The Basantpur substation constructed in Dharmadevi Municipality of Sankhuwasabha under the Koshi Corridor 220 kilovolt (KV) transmission line project has come into operation. The 220/132/33 kV capacity Basantpur substation built at an altitude of 2,450 meters above sea level has been officially charged and brought into operation by the Nepal Electricity Authority (NEA).