psc.mt.gov

State PUC Denies Northwestern Energy Rate Increase, Approves New Power Plant

The Montana Public Service Commission denied Northwestern Energy's request for a $43 million rate increase, approving a lower amount and authorizing a new power plant. Customers will see a reduction in current rates and receive refunds for overcharges.

PSC Withdraws FERC Intervention, Opens State Investigation of NWE Transactions

The Montana Public Service Commission (PSC) has withdrawn its intervention at FERC regarding NorthWestern Energy's acquisition of a share in the Colstrip power plant. The PSC will now conduct its own state-level investigation into the transaction to ensure it meets the needs of Montana retail customers.

Montana PSC Approves Interim Electric Rate Increase for MDU

The Montana Public Service Commission has approved an interim electric rate increase for Montana-Dakota Utilities (MDU), allowing the company to recover approximately $7.7 million in additional annual revenue. The interim rates will take effect on April 1, 2026, while MDU's full rate case is pending.