Related Files
StatusThe formal comment period and ballots for the Project 2022-01 Reporting ACE Definition and Associated Terms concluded 8 p.m. Eastern, Monday, October 30, 2023. The comments received and ballot resutls can be accessed via the links below. The drafting team will review all responses received during the comment period and determine the next steps of the project..
BackgroundThe SAR states that the current definition of Reporting Area Control Error (ACE) presents a conflict with the Western Interconnection's Automatic Time Error Correction (ATEC) process and does not allow other Interconnections to pursue ATEC. Additionally, there is confusion in that the terms ACE and Reporting ACE are both used throughout the standards. A revised definition should provide improve long-term average frequency performance as well as give other Interconnections the ability to pursue automatic correction approaches.
Standard(s) Affected: Multiple standards reference the Reporting ACE definition, including BAL.
New - Inadvertent Interchange Management (IIM)
Modified - Actual Net Interchange (NIA)
Modified - Area Control Error (ACE)
Modified - Automatic Time Error Correction (ATEC)
Modified - Balancing Authority Area (BAA)
Modified - Balancing Contingency Event (BCE)
Modified - Control Performance Standard (CPS)
Modified - Disturbance
Modified - Dynamic Interchange Schedule or Dynamic Schedule
Modified - Frequency Bias Setting (FBS)
Modified - Frequency Error
Modified - Implemented Interchange
Modified - Inadvertent Interchange
Modified - Interchange Meter Error (IME)
Modified - Operating Reserve – Spinning
Modified - Operating Reserve – Supplemental
Modified - Overlap Regulation Service
Modified - Pseudo-Tie
Modified - Ramp Rate or Ramp
Modified - Regulation Service
Modified - Reportable Balancing Contingency Event (RBCE)
Modified - Reporting Area Control Error (Reporting ACE)
Modified - Reserve Sharing Group (RSG)
Modified - Reserve Sharing Group Reporting ACE
Modified - Scheduled Frequency
Modified - Scheduled Net Interchange (NIS)
Modified - Supplemental Regulation Service
Modified - Tie Line Bias (TLB)
Modified - Time Error (TE)
Modified - Time Error Correction (TEC)
Retirement - Disturbance Control Standard
Retirement - Net Actual Interchange
Retirement - Net Interchange Schedule
Retirement - Net Scheduled Interchange
Retirement - Reportable Disturbance
Implementation Plan
Drafting Team Nominations
Supporting Materials
Unofficial Nomination Form (Word)
Standard Authorization Request
Unofficial Comment Form (Word)