FERC Announces Batch of Electric Rate Filings
Published Date: 9/4/2025
Notice
Summary
The Federal Energy Regulatory Commission got a bunch of new electric rate filings from companies like Idaho Power and several solar and power projects. These filings include updates to rates and tariffs that could affect energy prices and services starting as soon as September and as late as October 2025. If you’re involved or interested, mark your calendar to comment by early to mid-September to have your say!
Analyzed Economic Effects
11 provisions identified: 3 benefits, 0 costs, 8 mixed.
Multiple near‑term electric rate filings
The Commission received many electric rate and tariff filings (e.g., formula rate updates and 205(d) rate filings) with listed effective dates such as 9/1/2025, 10/28/2025, 10/29/2025, 11/1/2025, and 1/1/2026. Comment deadlines are set in September 2025 for these filings.
Idaho Power rate updates and revised exhibit
Idaho Power Company filed a 2025–2026 Formula Rate Annual Update on 8/28/2025 (comment due 5 p.m. ET 9/18/2025) and separately filed a Revised Exhibit D to be effective 9/1/2025 (filed 8/29/2025; comment due 5 p.m. ET 9/19/2025).
Wisconsin Electric formula rate update
Wisconsin Electric Power Company filed a Formula Rate Update for the 2024 rate year (filed 8/29/2025) to be effective 9/1/2025; comments are due by 5 p.m. ET 9/19/2025.
Alabama/Georgia/Mississippi depreciation rate filing
Alabama Power Company, Georgia Power Company, and Mississippi Power Company submitted an Attachment S filing of updated depreciation rates (filed 8/29/2025) to be effective 1/1/2026; comments are due by 5 p.m. ET 9/19/2025.
New York Transco / NYISO tariff amendment
New York Transco, LLC and the New York Independent System Operator filed a tariff amendment (filed 8/29/2025) concerning SA2615 to be effective 10/29/2025; comments are due by 5 p.m. ET 9/19/2025.
City of Riverside tariff and TRR revisions
The City of Riverside, California filed TO tariff and TRR revisions (filed 8/29/2025) to be effective 9/1/2025; comments are due by 5 p.m. ET 9/19/2025.
Solar project MBR tariff filings (Oct 28, 2025)
Eldorado Solar Project II, Sol InfraCo MT3, and Tilden Solar each submitted 205(d) MBR tariff filings that are listed to be effective 10/28/2025; comments are due by 5 p.m. ET 9/18/2025.
SunZia Transmission service agreements with odd effective date
SunZia Transmission, LLC filed Amended & Restated Large Generator Interconnection Agreements with CAISO (filed 8/28/2025) showing effective dates listed as 12/31/9998; comments are due by 5 p.m. ET 9/18/2025.
How to access filings and comment deadlines
Filings are available in FERC's eLibrary by docket number, and any person wishing to intervene, protest, or answer must file under Rules 211, 214, or 206 by 5:00 p.m. Eastern on the listed comment date (see each docket's comment date).
Office of Public Participation support
FERC's Office of Public Participation (OPP) is explicitly available to help landowners, community organizations, Tribal members, and others access information and navigate filing processes; OPP contact: (202) 502-6595 and [email protected].
Public access via FERC eLibrary
The notice explicitly states filings can be accessed in the Commission's eLibrary by querying docket numbers at https://elibrary.ferc.gov; accession numbers for each filing are listed.
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Key Dates
Department and Agencies
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