Dec. 7, 2022
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Legal & Regulatory
FERC Order No. 881 - Managing Transmission Line Ratings Phase 2: 12/13/22 call rescheduled to 12/21/22

The California ISO has rescheduled the public stakeholder call on Dec. 13, 2022 to Dec. 21, 2022, to discuss the FERC Order No. 881- Managing Transmission Line Ratings phase 2 initiative scope, and respond to questions from stakeholders.


On July 12, 2022, the ISO filed tariff revisions to comply with FERC Order No. 881, which seeks to improve the accuracy and transparency of electric transmission line ratings used by public utility transmission providers. While the ISO, as a public utility transmission service provider, intends to leverage existing business processes where possible to comply with Order No. 881, implementing Order No. 881 will affect the reliability coordinator functions the ISO performs as RC West.


Following the FERC Order No. 881 - Managing Transmission Line Ratings initiative’s phase 1 July 12, 2022 compliance filing, the ISO committed to holding regular discussions with participating transmission owners, WEIM entities, market participants, and RC West customers to address implementation issues and milestones associated with Order No. 881. The public call on December 21 will kick off those discussions, and continue through phase 2 of this initiative.


Materials will be available prior to the call on the FERC Order No. 881 - Managing Transmission Line Ratings Phase 2 initiative webpage.


Stakeholders are encouraged to send any questions or comments they wish to be addressed during the call to by end of day December 16.


The call will be recorded and the video file posted on the initiative webpage for a limited time. The recording is for informational and convenience purposes only, and any related transcriptions should not be reprinted without the ISO’s permission.


Meeting details

Date: Dec. 21, 2022

Time: 10 a.m. - 12 p.m. Pacific Time

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Web and audio participation information

Step 1: join web conference

Step 2: connect to audio by selecting “computer audio” or select “call me” and enter your phone number


Audio participation only: Call 1-888-251-2949 or 215-861-0694; access code: 8457822#


Technical support: call the AT&T Help Desk at 1-301-250-7202


Please contact Isabella Nicosia at or with any questions.

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