Powergrid upgrades Assam’s New Mariani substation

Power Grid Corporation of India Limited (Powergrid) has upgraded the New Mariani substation in Assam from 220 kV switching station to a 400/220 kV substation.

The new substation has 1,000 MVA (2×500 MVA) transformation capacity and 250 MVAR reactive power compensation along with other associated bays under North Eastern Region Strengthening Scheme (NERSS) VI project. The project is the first 400 kV substation inupper Assam, which will serve as a key station for catering to augmentation of power in upper Assam, Nagaland, Manipur and the entire north eastern region.

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