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FERC RIN: 1902-AF84 Publication ID: Spring 2022 
Title: Managing Transmission Line Ratings 
Abstract:

The Commission revised both the pro forma Open Access Transmission Tariff and the Commission’s regulations under the Federal Power Act to improve the accuracy and transparency of electric transmission line ratings. Specifically, the Commission is requiring: Public utility transmission providers to implement ambient-adjusted ratings on the transmission lines over which they provide transmission service; regional transmission organizations (RTO) and independent system operators (ISO) to establish and implement the systems and procedures necessary to allow transmission owners to electronically update transmission line ratings at least hourly; public utility transmission providers to use uniquely determined emergency ratings; public utility transmission owners to share transmission line ratings and transmission line rating methodologies with their respective transmission provider(s) and with market monitors in RTOs/ISOs; and public utility transmission providers to maintain a database of transmission owners’ transmission line ratings and transmission line rating methodologies on the transmission provider’s Open Access Same-Time Information System site or other password-protected website (Docket No. RM20-16-000).

 
Agency: Federal Energy Regulatory Commission(FERC)  Priority: Economically Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: Yes  Unfunded Mandates: No 
CFR Citation: 18 CFR 35   
Legal Authority: 16 U.S.C. 791a to 825r    16 U.S.C. 2601 to 2645    31 U.S.C. 9701    42 U.S.C. 7101 to 7352   
Legal Deadline:  None
Timetable:
Action Date FR Cite
NPRM  01/21/2021  86 FR 6420   
NPRM Comment Period End  03/22/2021 
Final Rule, Order No. 881  01/13/2022  87 FR 2244   
Final Rule Effective  03/14/2022 
Order Addressing Rehearing  05/00/2023 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Ryan Stroschein
Legal Information, Office of the General Counsel
Federal Energy Regulatory Commission
888 First Street NE,
Washington, DC 20426
Phone:202 502-8099
Email: ryan.stroschein@ferc.gov

Dillon Kolkmann
Technical Information, Office of Energy Policy and Innovation
Federal Energy Regulatory Commission
888 First Street NE,
Washington, DC 20426
Phone:202 502-8650
Email: dillon.kolkmann@ferc.gov

Mark Armamentos
Technical Information, Office of Energy Market Regulation
Federal Energy Regulatory Commission
888 First Street NE,
Washington, DC 20426
Phone:202 502-8103
Email: mark.armamentos@ferc.gov