FERC Tallies Power Plant Filings and Rate Updates
Published Date: 8/5/2025
Notice
Summary
The Federal Energy Regulatory Commission got several important filings from power companies and energy centers. These include requests to approve big changes, self-certifications for special energy status, and complaints about how energy is managed. If you’re involved in energy or power markets, watch for deadlines to comment and note some changes could affect costs or operations starting as soon as August or September 2025.
Analyzed Economic Effects
4 provisions identified: 0 benefits, 0 costs, 4 mixed.
Big corporate transaction filed under FPA
The Commission received a joint application under Section 203 of the Federal Power Act from Guernsey Power Station LLC and Talen Generation, LLC (filed July 30, 2025). The filing has a comment deadline of 5 p.m. ET on September 15, 2025. If you are a party to or affected by power-asset transactions, watch that docket for potential changes to ownership or control.
Complaint filed against MISO by North Dakota PSC
The North Dakota Public Service Commission and others filed a complaint against the Midcontinent Independent System Operator, Inc. on July 30, 2025 (docket EL25-109-000) with a comment deadline of 5 p.m. ET on August 19, 2025. If you participate in or rely on MISO-managed markets or transmission, this complaint docket may affect market rules or operations.
Many tariff and rate filings with near-term effective dates
The notice lists numerous 205(d) rate filings and market-based rate tariff revisions with effective dates in July, August, September, and October 2025 (examples include PGE–PacifiCorp cost reimbursement effective 9/28/2025; several Market-Based Rate Tariff revisions effective 8/1/2025; and Duke Energy Progress updated nuclear decommissioning expense effective 10/1/2025). Comment deadlines for these filings occur at 5 p.m. ET on various dates between August 18, 2025 and September 29, 2025. If you buy, sell, or are contracted for electricity or transmission services, these filings may alter costs or contract terms.
Exempt Wholesale Generator self-certifications filed
Two companies submitted Notices of Self-Certification of Exempt Wholesale Generator status: Hashknife Energy Center LLC (filed July 30, 2025; comment date 5 p.m. ET August 20, 2025) and Arlington Valley Solar Energy, LLC (filed July 31, 2025; comment date 5 p.m. ET August 21, 2025). If you develop, buy, or contract with wholesale generators, these filings are relevant to market participation and eligibility.
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Key Dates
Department and Agencies
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