February 14, 2023

$2.5B power line planned from central North Dakota to southeastern Montana

A Duluth-based energy company with a subsidiary in Bismarck has announced plans for a $2.5 billion power line from central North Dakota to southeastern Montana, connecting three regional U.S. electric markets.

Allete Inc. is working with Houston-based Grid United, an independent transmission company, on the 385-mile high-voltage North Plains Connector line. It would run from an existing substation near Center and a new substation in Morton County near Solen to Colstrip, Montana, providing the nation’s first transmission connection between three regional power grids — the Midcontinent Independent System Operator and the Southwest Power Pool, whose areas include North Dakota, and the Western Interconnection, which includes Montana, Allete said.

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