Bids are invited for the supply of substation package for the 765/400 kV, 2x1,500 MVA air-insulated switchgear (AIS) substation at Medinipur; the 765/400 kV, 2x1,500 MVA AIS substation at Jeerat (New); and extension of the 400 kV Jeerat [West Bengal State Electricity Transmission Company Limited (WBSETCL)] substation (two units of 400 kV gas-insulated switchgear [GIS] bays) associated with the Eastern Region Strengthening Scheme (ERSS)-XVII.