MDU plans to construct a 230/46 kV addition to the Merricourt Transmission Substation to interconnect two new 46 kV sub-transmission lines, providi…
Office of NEPA Policy and Compliance
November 26, 2025
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MDU plans to construct a 230/46 kV addition to the Merricourt Transmission Substation to interconnect two new 46 kV sub-transmission lines, providing an additional transmission source to the Wishek to Ellendale sub-transmission system. The new 46kV lines will be routed from the Merricourt Transmission Substation generally north to Hwy 13 (Merricourt-Fredonia 46 kV line) and generally south to Hwy 11 (Merricourt-Ashley 46 kV line), connecting to the existing Wishek to Ellendale 46 kV lines.