INITIATIVE:
Variable operations and maintenance cost review

Started: Dec 19, 2019

Leads
Kevin Head

Through this initiative, developed from the existing variable operations and maintenance cost review recurring stakeholder process, the ISO will update the operations and maintenance cost framework by providing definitions for operations and maintenance cost components, updating variable operations adder values, and calculating default maintenance adders.

Outcome: Effective as of trade date Jan. 1, 2022, the ISO updated the operations and maintenance cost framework by providing definitions for operations and maintenance cost components, updating variable operations adder values, and calculating default maintenance adders. This implementation defined the Operations and Maintenance (O&M) cost components, including how to differentiate between fixed and variable O&M costs, redefined the O&M adder components, and allowed market participants to bid in all of their variable maintenance costs through a new default maintenance adder in lieu of the current Major Maintenance Adder (MMA).

Status

Proposal Development Decision Implementation Completed/Closed
Jan 25, 2021 Revised draft tariff language posted
Oct 22, 2020 Final proposal posted
May 12, 2021 FERC approval (ER21-1266)
Mar 03, 2021 Tariff amendment (ER21-1266)
Nov 18, 2020 Board of Governors approval
Oct 01, 2021 Deployment
Oct 2021 Activation
Completed

Activities

Training




Web meeting


Revised Draft Tariff Language - Variable Operations and Maintenance Cost Review

Web meeting


Stakeholder Comments Response Matrix - Variable Operations and Maintenance Cost Review - Draft Tariff Language

Transition Period Draft Tariff Language - Variable Operations and Maintenance Cost Review

Draft Tariff Language - Variable Operations and Maintenance Cost Review

View comments

Web meeting


Presentation - Variable Operations and Maintenance Cost Review - Oct 29, 2020

Final Proposal - Variable Operations and Maintenance Cost Review

Supporting Calculations - Final Proposal - Variable Operations and Maintenance Cost Review

View comments


Notice of Decisional Classification - Variable Operations and Maintenance Cost Review.pdf

Web meeting


Presentation - Variable Operations and Maintenance Cost Review - Aug 19, 2020

Draft Final Proposal - Variable Operations and Maintenance Cost Review

Supporting Calculations - Draft Final Proposal - Variable Operations and Maintenance Cost Review

View comments

Web meeting


Presentation - Variable Operation and Maintenance Cost Review - May 11, 2020
Updated 05/11/2020

Revised Straw Proposal - Variable Operations and Maintenance Cost Review
Updated 05/05/2020 to correct minor errors.

Supporting Calculations - Revised Straw Proposal - Variable Operations and Maintenance Cost Review
Updated 05/05/2020 to correct minor errors.

Web meeting


Presentation - Variable Operations and Maintenance Cost Review - Straw Proposal

Straw Proposal - Variable Operations and Maintenance Cost Review

Working groups


Cost reports