regional market development

Overview of Regional Market Development in the Western Interconnection

As most other regions of the country established regional electricity markets in the wake of FERC Orders 888, 889, and 2000, resulting in greater generator competition and wider transmission access through the establishment of Independent System Operators (“ISOs”) and Regional Transmission Organizations (“RTOs”), the West has remained in a largely balkanized operating paradigm with 38 Balancing Authorities (“BAs”) and relatively minimal coordination. There is only one regional market operating today in the Western Interconnection – the real-time Western Energy Imbalance Market (“EIM”). The EIM began market operations in November 2014 and is operated by the California Independent System Operator (“CAISO”).

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