INITIATIVE:
WEIM resource sufficiency evaluation enhancements

Started: May 25, 2021

Leads
Danny Johnson

Phase 1 of this initiative examines the design and implementation of the current Western Energy Imbalance Market (WEIM) resource sufficiency evaluation (RSE). This initiative will review the balancing, capacity, and flexible ramping tests to determine if any enhancements are needed to ensure the test components achieve their stated objective.  In addition, this initiative will clarify what constitutes leaning, as well as determine appropriate consequences for a failure of the RSE.  

Phase 1B of this initiative enhances the accuracy and equitable application of the WEIM resource sufficiency evaluation (RSE). The phase 1B enhancements aim to resolve outstanding concerns regarding the accuracy of the RSE that were raised by stakeholders in the phase 1 initiative.  As part of the phase 1B initiative, the ISO will analyze the impact of load conformance on WEIM transfers, the interplay of WEIM transfers with hourly block exports, and the performance of the methodology to estimate uncertainty requirements. 

Status

Proposal Development Decision Implementation Completed/Closed
Week of Sep 26, 2022* Final proposal posting
Oct 06, 2022 Meeting
Oct 25-26, 2022 Joint WEIM Governing Body and Board of Governors meeting
Sep 14, 2022 FERC Order Accepting Compliance Filing (ER22-1278)
Jun 07, 2022 Compliance Filing (ER22-1278)
May 27, 2022 FERC approval (ER22-1278)
Mar 11, 2022 Tariff amendment filing (ER22-1278)
Feb 09, 2022 ISO Board of Governors approval - phase 1
Feb 02, 2022 Market Surveillance Committee opinion adopted - phase 1
Phase 1: Jun 1, 2022 Implementation
Implementation milestones

Activities

Web meeting


Final Proposal - WEIM Resource Sufficiency Evaluation Enhancements Phase 2

Web meeting


Market Surveillance Committee meeting

Web meeting


Draft Tariff Language - WEIM Resource Sufficiency Evaluation Enhancements Phase 2

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FERC order accepting compliance filing


Web meeting


Revised Draft Final Proposal - WEIM Resource Sufficiency Evaluation Enhancements Phase 2

Presentation - WEIM Resource Sufficiency Evaluation Enhancements Phase 2 - Sep 2, 2022

Draft Final Proposal - WEIM Resource Sufficiency Evaluation Enhancements Phase 2

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Phase 2 web meeting


Presentation - WEIM Resource Sufficiency Evaluation Enhancements Phase 2 - Jul 11, 2022

Straw Proposal - WEIM Resource Sufficiency Evaluation Enhancements Phase 2

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Compliance filing


Phase 1B web meeting


Presentation - WEIM Resource Sufficiency Evaluation Enhancements Phase 1B - Jun 28, 2022

Final Analysis Report - WEIM Transfers, Hourly Interties and Load

FERC approval (phase 1)


Phase 1B web meeting


Presentation - WEIM Resource Sufficiency Evaluation Enhancements - May 3, 2022

Analysis Report - Intertie Deviation - WEIM Resource Sufficiency Evaluation Enhancements Final Analysis

Analysis Report - Interaction of Hourly Intertie Schedules and Transfers - WEIM Resource Sufficiency Evaluation Enhancements

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Phase 1B web meeting


Presentation - Flexible Ramping Uncertainty Calculation in the Western Energy Imbalance Market (WEIM) - Apr 1, 2022

Presentation - Load Conformance Impact on the Resource Sufficiency Evaluation - Apr 1, 2022

Analysis Report - Load Conformance Impact on Resource Sufficiency Evaluation

Analysis Report - Flexible Ramping Uncertainty Calculation in the Western Energy Imbalance Market

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Phase 1 web meeting


Presentation - WEIM Resource Sufficiency Evaluation Enhancements - Emergency Actions Criteria - Mar 23, 2022

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Tariff amendment (phase 1)


Phase 1 web meeting


Final Draft Tariff Language - WEIM Resource Sufficiency Evaluation Enhancements

Phase 1 web meeting


Presentation - WEIM Resource Sufficiency Evaluation Enhancements Phase 1 - Emergency Actions Criteria Workshop - Feb 23, 2022

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Phase 1B web meeting


Presentation - WEIM Resource Sufficiency Evaluation Enhancements Phase 1B - Feb 16, 2022

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Phase 1 web meeting


Revised Draft Tariff Language - WEIM Resource Sufficiency Evaluation Enhancements
Revisions to this version are based on stakeholder comments received on draft tariff language on Jan. 25, 2022.

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Notice of Decisional Classification - Resource Sufficiency Evaluation Enhancements

Phase 1 web meeting


Audio - WEIM Resource Sufficiency Evaluation Enhancements - Feb 4, 2022

Draft Tariff Language - EIM Resource Sufficiency Evaluation Enhancements

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Phase 1 web meeting


Presentation - EIM Resource Sufficiency Evaluation Enhancements - Dec 21, 2021

Revised Draft Final Proposal - EIM Resource Sufficiency Evaluation Enhancements

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Phase 1 web meeting


Presentation - EIM Resource Sufficiency Evaluation Enhancements - Dec 8, 2021

Phase 1 web meeting


Phase 1 web meeting


Presentation - Resource Sufficiency Evaluation Enhancements - Oct 12, 2021

Draft Final Proposal - EIM Resource Sufficiency Evaluation Enhancements

Analysis of the Intertie Deviation Adder Used in the Capacity Test

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Phase 1 web meeting


Phase 1 web meeting


Straw Proposal - EIM Resource Sufficiency Evaluation Enhancements
Updated proposal includes a clarification to paragraph 2 in section 4.2.3

Presentation - EIM Resource Sufficiency Evaluation Enhancements - Aug 23, 2021

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Phase 1 web meeting


This is day 2 of the workshop to discuss the issue paper posted on May 28, 2021. The issue paper and workshop presentations are posted as part of the June 25 activity below.

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Phase 1 web meeting


CAISO Presentation - EIM RSE Enhancements Workshop - Jun 25 and 28, 2021

PGE Presentation - EIM RSE Enhancements Workshop - Jun 25 and 28, 2021 (Uncertainty in the Capacity Test)

Joint EIM Entity Combined Presentation - EIM RSE Enhancements Workshop - Jun 25 and 28, 2021

Joint EIM Presentation - EIM RSE Enhancements Workshop - Jun 25 and 28, 2021 (Topics and Principles)

Joint EIM Entity Presentation - EIM RSE Enhancements Workshop - Jun 25 and 28, 2021 (Specific Enhancements to Improve RSE Accuracy)

Joint EIM Entity Presentation - EIM RSE Enhancements Workshop - Jun 25 and 28, 2021 (Enhanced Transparency, Reporting and Oversight)

Joint EIM Entity Presentation - EIM RSE Enhancements Workshop - Jun 25 and 28, 2021 (Failure Consequences)

Issue Paper - EIM Resource Efficiency Evaluation Enhancements