Alipurduar Transmission Limited (ATL), a wholly owned subsidiary of Kalpataru Power Transmission Limited, has connected the Alipurduar-Siliguri line with the interconnection facilities of the grid. In March 2019, ATL commissioned the Kishanganj Darbhanga line. With this connection of the Alipurduar-Siliguri line, the project has reached full commissioning. ATL was set up as part of the interstate transmission system for grid strengthening and transfer of power from new hydropower projects in Bhutan to India.