Search

INITIATIVE:
Transmission service and market scheduling priorities

Started: May 20, 2021

Leads
Milos Bosanac

As part of the Market Enhancements for Summer 2021 Readiness initiative conducted earlier in the year, the ISO committed to undertaking an initiative to develop a long-term, holistic, framework for establishing scheduling priorities in the ISO market.  This initiative will evaluate the development of this holistic, long-term, framework while also evaluating near-term enhancements to the current scheduling priority framework that can be implemented by next summer.

(formerly External load forward scheduling rights process)

Relevant notices Contact us

Status

Proposal Development Decision Implementation Completed/Closed
Phase 2
May 10, 2023 Comments due
Jun 16, 2023* Revised draft tariff language posting
Jun 30, 2023* Comments due
TBD* Meeting
TBD* Second revised draft tariff language posting
TBD* Comments due
TBD* Meeting
Feb 1, 2023 Board of Governors approval - phase 2
Summer 2024
Implementation milestones
Phase 1
Jan 11, 2022 Revised draft tariff language
Dec 10, 2021 Draft final proposal
Mar 15, 2022 FERC approval (ER22-906)
Jan 20, 2022 Board of Governors approval - phase 1
Spring 2022
Implementation milestones 		Completed

Phase 2

WEIM Advisory

Web meeting

Video - Transmission Service and Market Scheduling Priorities - Apr 14, 2023 04/19/2023

Draft Tariff Language - Transmission Service and Market Scheduling Priorities Phase 2 03/27/2023

View comments


WEIM Governing Body Market Expert Opinion on Transmission Service and Market Scheduling Priorities Phase 2 Final Proposal 01/27/2023


Notice of Decisional Classification - Transmission Service and Market Scheduling Priorities Phase 2 - Jan 2023 01/26/2023

Final proposal

Final Proposal - Transmission Service and Market Scheduling Priorities Phase 2 01/18/2023

OATI Opinion - Transmission Service and Market Scheduling Priorities Phase 2 Final Proposal 01/25/2023

Web meeting

Market Surveillance Committee meeting

Transmission Service and Market Scheduling Priorities Phase 2 - MSC Presentation - Dec 12, 2022 12/12/2022

Web meeting

Video - Transmission Service and Market Scheduling Priorities Initiative - Dec 16, 2022 12/19/2022

Presentation - Transmission Service and Market Scheduling Priorities Phase 2 - Dec 16, 2022 12/16/2022
Reposted to clarify that the item will be presented to ISO Board of Governors in February 2023 for decision and the WEIM Governing Body in an advisory role.

Draft Final Proposal - Transmission Service and Market Scheduling Priorities Phase 2 12/15/2022
Reposted to remove reference on page 7 inadvertently referring to prepayment of transmission, consistent with rest of proposal.

View comments

Web meeting

Video - Transmission Service and Market Scheduling Priorities Phase 2 - Aug 11, 2022 08/16/2022

Presentation - Transmission Service and Market Scheduling Priorities Phase 2 - Aug 11, 2022 08/10/2022

Straw Proposal - Transmission Service and Market Scheduling Priorities Phase 2 07/29/2022

Approach 1 Data - Transmission Service and Market Scheduling Priorities Phase 2 - Aug 24, 2022 08/24/2022

Approach 2 Data - Transmission Service and Market Scheduling Priorities Phase 2 - Aug 24, 2022 08/24/2022

View comments


Mar 15, 2022 Order Accepting Extension of Loads, Exports and Wheeling (ER22-906) 03/24/2022


Mar 15, 2022 Order Accepting in Part, Rejecting in Part - Loads, Exports and Wheeling Compliance Filing (ER21-1790) 03/24/2022

Web meeting

Video - Transmission Service and Market Scheduling Priorities Phase 2 Working Group - Feb 14, 2022 03/01/2022

CAISO Presentation - Transmission Service and Market Scheduling Priorities Working Group - Feb 14, 2022 02/14/2022

Vistra and Powerex Presentation - Transmission Services and Market Priorities Long-Term Framework - Feb 14, 2022 02/14/2022

Web meeting

Video - Transmission Service and Market Scheduling Priorities Phase 2 Working Groups 2 and 3 - Feb 4, 2022 02/08/2022

CAISO Presentation - Transmission Service and Market Scheduling Priorities - Working Groups 2 and 3 - Feb 4, 2022 02/04/2022

SRP Presentation - Transmission Service and Market Scheduling Priorities - Working Groups 2 and 3 - Feb 4, 2022 02/03/2022

Web meeting

Video - Transmission Service and Market Scheduling Priorities - Working Groups 2 and 3 - Jan 31, 2022 02/03/2022

CAISO Presentation - Transmission Service and Market Scheduling Priorities - Working Groups 2 and 3 - Jan 31, 2022 01/31/2022

IPC Presentation - Transmission Service - Market Scheduling Priorities - Working Group 2 - Jan 31, 2022 01/31/2022

IPC Presentation - Transmission Service - Market Scheduling Priorities - Working Group 3 - Jan 31, 2022 01/28/2022

Web meeting

Video - Transmission Service and Market Scheduling Priorities Working Groups 2 and 3 - Jan 14, 2022 03/22/2022

CAISO Presentation - Transmission Service and Market Scheduling Priorities Working Groups 2 and 3 - Jan 14, 2022 01/25/2022

BPA Presentation - Transmission Service and Market Scheduling Priorities Working Group 2 - Jan 14, 2022 01/25/2022

BPA Presentation - Transmission Service and Market Scheduling Priorities Working Group 3 - Jan 14, 2022 01/25/2022

Web meeting

Video - Transmission Service and Market Scheduling Priorities - Working Group 1 - Dec 10, 2021 01/25/2022

CAISO Presentation - Transmission Service and Market Scheduling Priorities - Working Group 1 - Dec 10, 2021 01/25/2022

Joint CA LSEs Presentation - Transmission Service and Market Scheduling Priorities - Working Group 1 - Dec 10, 2021 01/25/2022

Web meeting

Video - Transmission Service and Market Scheduling Priorities - Working Group 1 - Nov 30, 2021 01/25/2022

CAISO Presentation - Transmission Service and Market Scheduling Priorities - Working Group 1 - Nov 30, 2021 01/25/2022

BPA Presentation - Transmission Service and Market Scheduling Priorities - Working Group 1 - Nov 30, 2021 01/25/2022

Web meeting

Video - Transmission Service and Market Scheduling Priorities - Working Group 1 - Nov 19, 2021 01/25/2022

CAISO Presentation - Transmission Service and Market Scheduling Priorities - Working Group 1 - Nov 19, 2021 01/25/2022

SRP Presentation - Transmission Service and Market Scheduling Priorities - Working Group 1 - Nov 19, 2021 01/25/2022

Web meeting

Video - Transmission Service and Market Scheduling Priorities - Working Group 1 - Nov 15, 2021 01/25/2022

CAISO Presentation - Transmission Service and Market Scheduling Priorities - Working Group 1 - Nov 15, 2021 01/25/2022

IPC Presentation - Transmission Service and Market Scheduling Priorities - Working Group 1 - Nov 15, 2021 01/25/2022

Web meeting

Video - External Load Forward Scheduling Rights Process - Working Group 1 - Nov 10, 2021 01/25/2022

CAISO Presentation - External Load Forward Scheduling Rights Process - Working Group 1 - Nov 10, 2021 01/25/2022

Vistra Presentation - External Load Forward Scheduling Rights Process - Working Group 1 - Nov 10, 2021 01/25/2022

Phase 1

Completed

OUTCOME: The California ISO implemented transmission service and market scheduling priorities phase 1 (TSMSP1) on June 1, 2022. The TSMSP1 implementation benefits market participants by extending the current, interim wheeling through scheduling priorities framework valid to May 1, 2024, by providing additional visibility of the non-RA capacity for supporting resources (including applicable notifications), by providing clarifications regarding high priority exports (PT exports) from Variable Energy Resources (VER), by publishing additional relevant and requested data and information, and by consolidating of terms applicable to exports and wheels.

Training

Presentation - Transmission Service and Market Scheduling Priorities Phase 1 Training - Apr 28, 2022 04/29/2022

Video - Transmission Service and Market Scheduling Priorities Phase 1 Training - Apr 28, 2022 04/29/2022


Notice of Decisional Classification - Transmission Service and Market Scheduling Priorities 01/12/2022

Web meeting

Video - Transmission Service and Market Scheduling Priorities - Jan 14, 2022 01/19/2022

Revised Draft Tariff Language - Transmission Service and Market Scheduling Priorities - Phase 1 (Effective Jun 1, 2024) 01/11/2022

Revised Draft Tariff Language - Transmission Service and Market Scheduling Priorities - Phase 1 (Effective Jun 1, 2022 through May 1, 2024) 01/11/2022

Web meeting

ISO Responses to Stakeholder Comments – Transmission Service and Market Scheduling Priorities Phase 1 - Draft Final Proposal 01/19/2022

Video - Transmission Service and Market Scheduling Priorities - Dec 20, 2021 12/28/2021

Presentation - Transmission Service and Market Scheduling Priorities - Dec 20, 2021 12/17/2021

Draft Tariff Language - Transmission Service and Market Scheduling Priorities - Phase 1 (Effective Jun 1, 2022) 12/10/2021

Draft Tariff Language - Transmission Service and Market Scheduling Priorities - Phase 1 (Effective Jun 1, 2024) 12/10/2021

Draft Final Proposal - Transmission Service and Market Scheduling Priorities - Phase 1 12/21/2021

View comments

Web meeting

Video - External Load Forward Scheduling Rights Process - Sep 9, 2021 09/14/2021

Presentation - External Load Forward Scheduling Rights Process - Sep 9, 2021 09/07/2021

Issue Paper - External Load Forward Scheduling Rights Process 08/31/2021

View comments

Web meeting

Video - External Load Forward Scheduling Rights Process Workshop - Jul 13, 2021 07/14/2021

ISO Presentation - External Load Forward Scheduling Rights Process Workshop - Jul 13, 2021 07/12/2021

SRP, APS, and TEP Presentation - External Load Forward Scheduling Rights Process Workshop - Jul 13, 2021 07/12/2021

Powerex Presentation - External Load Forward Scheduling Rights Process Workshop - Jul 13, 2021 07/12/2021

Joint LSE Presentation - External Load Forward Scheduling Rights Process Workshop - Jul 13, 2021 07/12/2021
CalCCA, PG&E, SCE, SDG&E and Six Cities

BANC Presentation - External Load Forward Scheduling Rights Process Workshop - Jul 13, 2021 07/12/2021

View comments