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As MISO’s (later changed to Midcontinent Independent System Operator) membership changed, the makeup of OMS did as well. In December 2013, OMS welcomed its five newest members from the south to achieve its current construct when the Entergy Region joined MISO.
Midcontinent Independent System Operator adding four new electric territories in December. The Midcontinent Independent System Operator (MISO) plans to integrate the operations of the transmission systems owned by four electric companies in the Gulf Coast region starting this December.
Applicants: Midcontinent Independent System Operator, Inc., Great River Energy. Description: Compliance filing: Midcontinent Independent System Operator, Inc. submits tariff filing per 35: 2023–05–23_GRE Schedule 50 Cost Recovery to be effective N/A. Filed Date: 5/23/23. Accession Number: 20230523–5103. Comment Date: 5 p.m. ET 6/13/23.