Northeast Utilities File Rate Updates With FERC
Published Date: 7/1/2026
Notice
Summary
The Federal Energy Regulatory Commission got new filings from several energy companies about electric rates and market power in the Northeast. These updates could affect how much energy costs and who controls the market. If you want to comment, mark your calendar—deadlines range from mid-July to late August 2026.
Analyzed Economic Effects
4 provisions identified: 1 benefits, 0 costs, 3 mixed.
Ameren Illinois tariff filing dated Aug 26, 2026
Ameren Illinois Company filed a Sec. 205(d) tariff submission (SA 4794 Ameren IL–City of Marshall–IMEA WCA) that is stated to be effective August 26, 2026; the filing was submitted June 26, 2026 and the comment date is 5:00 p.m. ET July 17, 2026.
Named filings list explicit effective dates
The notice includes filings that state proposed effective dates: Tri-State Generation and Transmission Association's RS 260 revision effective June 25, 2026; Duke Energy Progress and Duke Energy Carolinas Order No. 898 amendments stated to be effective January 1, 2025; Alist Energy LLC's market-based rate authority application to be effective July 1, 2026; and Southwest Power Pool’s NITSA with Kansas City Board of Public Utilities to be effective September 1, 2026.
Multiple electric rate filings received
The Federal Energy Regulatory Commission received many electric rate-related filings on June 24–26, 2026, including market power analyses for the Northeast (e.g., docket ER20-391-018 and ER23-2625-004). These filings were submitted by firms such as J. Aron & Company LLC and NRG Business Marketing LLC, among others.
Public comment and intervention deadlines
If you want to intervene or comment on any listed filing, you must file by 5:00 p.m. Eastern on the specified comment dates. The notice lists comment deadlines including July 16, 2026; July 17, 2026; and August 24, 2026.
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