Real-time settlement review

Started: Aug 13, 2020

James Friedrich

The scope of this initiative is to identify and address any inappropriate cost shifting that may be occurring in ISO’s real-time market between the Western Energy Imbalance Market (EIM) balancing authority areas. This initiative is intended to fulfill the commitment the ISO made during the Real-Time Market Neutrality Settlement initiative to more comprehensively review real-time market settlements to identify any remaining inappropriate cost shifting.

Outcome: The ISO implemented the Real-Time Settlements project in two phases, the first being on May 1, 2021. The second phase went live on Nov. 1, 2021. Phase 1 delivered the settlement of the Base Energy Transfer System Resource (ETSR) at the unique pricing location LMP. It also delivered the modify bid cost recovery (BCR) transfer adjustment amount to be based upon (ETSR) export over ETSR export plus measured demand. Phase 2 clarified tariff language that involves a market rule change that will allow an EIM entity not to settle Unaccounted for Energy (UFE) for each EIM entity.


Proposal Development Decision Implementation Completed/Closed
Oct 21, 2020 Draft final proposal posted
Apr 30, 2021 FERC approval in part/rejection in part (ER21-955)
Mar 25, 2021 Amendment to filing (ER21-955)
Jan 27, 2021 Tariff amendment filing (ER21-955)
Dec 17, 2020 Board of Governors approval
Dec 02, 2020 EIM Governing Body approval (settlement rule changes)
Phase 2:
Nov 01, 2021 Deployment
Nov 2021 Activation

Phase 1:
May 01, 2021 Deployment
May 2021 Activation


Training Phase 2

Presentation - Real-Time Settlements Review Phase 2

Notice of Decisional Classification - Real-Time Settlements Review

Web meeting

Revised Draft Tariff Language - Real-Time Settlement Review

Draft Tariff Language - Real-Time Settlement Review

Web meeting

Presentation - Real-Time Settlement Review Draft Final Proposal - Oct 28, 2020

Draft Final Proposal - Real-Time Settlement Review

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Web meeting

Example - Real-Time Settlement Review - Unaccounted for Energy Settlement

Web meeting

Issue Paper and Straw Proposal - Real-Time Settlement Review

Presentation - Real-Time Settlement Review

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