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INITIATIVE:
Minimum state of charge extension

WEIM Advisory
Started: Jan 25, 2023

Leads
Daniel Johnson

This initiative contemplates the extension of the minimum state of charge constraint, which was initially developed as a two-year stopgap measure in the market enhancements for summer 2021 readiness initiative. The energy storage enhancements policy developed tools to help replace the minimum state of charge constraint, but those tools will not be fully available for use until after summer 2023. This initiative extends the life of the minimum state of charge constraint for no more than two additional years.

Outcome: The initiative focused on extending the minimum state of charge constraint through Sept. 30, 2023.  It was approved at the ISO Board of Governors on March 22, 2023 and then approved by FERC on May 25, 2023.

Relevant notices Contact us

Status

Proposal Development Decision Implementation Completed/Closed
Mar 06, 2023 Final proposal posted
May 25, 2023 FERC approval (ER23-1485)
Mar 28, 2023 Tariff amendment (ER23-1485)
Mar 22, 2023 ISO Board of Governors and WEIM Governing Body approval
FERC approved extension through Sep 30, 2023
Implementation milestones 		Completed

Activities

Filing

May 25, 2023 Letter Order Accepting Minimum State of Charge Extension (ER23-1485) 05/30/2023

Apr 28, 2023 Answer to Marin Clean Energy Comments - Tariff Amendment - Minimum State of Charge (ER23-1485) 05/02/2023

Mar 28, 2023 Tariff Amendment - Minimum State of Charge (ER23-1485) 04/06/2023


Notice of Decisional Classification - Minimum State of Charge Extension - Mar 2023 03/14/2023


Final Proposal - Minimum State of Charge Extension 03/06/2023

Web meeting


Video - Minimum State of Charge Extension - Feb 9, 2023 02/13/2023

Straw Proposal - Minimum State of Charge Extension 02/02/2023

Presentation - Minimum State of Charge Extension - Feb 9, 2023 02/07/2023

Summer Market Performance Report for September 2022 02/09/2023
Reference material

Monthly Market Performance Reports - Executive Summary - Sep 2022 02/09/2023
Reference material

Presentation - Summer Market Performance Report for Sep 2022 - Nov 17, 2022 02/09/2023
Reference material

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