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Independent regulatory commissions

Federal Energy Regulatory Commission Accepts NorthWestern Corporation's Revised Colstrip Units 1 and 2 Transmission Agreement

Strategic Insights

— 1 min read

On August 22, 2025, the Federal Energy Regulatory Commission (FERC) issued a delegated order accepting NorthWestern Corporation's revised Colstrip Units 1 and 2 Transmission Agreement with Puget Sound Energy. The agreement was submitted on July 1, 2025, and after a public notice period with no protests or adverse comments, FERC granted acceptance. The order does not constitute approval of any service, rate, charge, classification, or any rule, regulation, contract, or practice affecting such rate or service. This action is without prejudice to any findings or orders that may be made by FERC in any proceeding now pending or hereafter instituted.

Key Takeaways:

  • The FERC accepted NorthWestern Corporation's revised Colstrip Units 1 and 2 Transmission Agreement with Puget Sound Energy on August 22, 2025.
  • The agreement was submitted on July 1, 2025, and was publicly noticed with no protests or adverse comments filed.
  • The FERC order does not constitute approval of any service, rate, charge, classification, or any rule, regulation, contract, or practice affecting such rate or service.
  • This action is without prejudice to any findings or orders that may be made by FERC in any proceeding now pending or hereafter instituted.
  • Amery S. Pore, Director of the Division of Electric Power Regulation - West, issued the order.
  • The filing was accepted as requested, effective September 1, 2025.

Statistics:

  • Date of submission: July 1, 2025
  • Date of FERC acceptance: August 22, 2025
  • Effective date: September 1, 2025
  • Document Accession Number: 20250822-3053
  • Filing type: Revised power transmission agreement

Sources:

  • FERC, NorthWestern Corporation, Docket No. ER25-2765-000, Issued: August 22, 2025
  • 18 C.F.R. § 375.307 (FERC Delegation Order)

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