Federal regulators approve NorthWestern proposal for new Colstrip shares

By: Keila Szpaller

Outlets: Daily Montanan

Published: March 3, 2026

Words: 1,148

Last Updated: 1 week, 2 days ago

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Federal regulators approved a proposal from a NorthWestern Energy subsidiary to use its new Colstrip shares from Puget Sound Energy for sales on the wholesale market.

Opponents of the deal had raised concerns it would mean existing customers would end up subsidizing costs, such as for fuel and maintenance, of the new shares.

They also argued the transfer of shares itself required approval by federal regulators, a step monopoly utility NorthWestern Energy had …

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