Southwest Power Pool, Inc.; AEP Oklahoma Transmission Company, Inc.; AEP Southwestern Transmission Company, Inc.; Deseret Generation & Transmission Co-Operative, Inc.; Empire District Electric Company; Evergy Kansas Central, Inc.; Evergy Kansas South, Inc.; Evergy Metro, Inc.; Evergy Missouri West, Inc.; GridLiance High Plains LLC; ITC Great Plains, LLC; Mountrail-Williams Electric Cooperative; NextEra Energy Transmission Southwest, LLC; NorthWestern Energy Public Service Corporation; Oklahoma Gas and Electric Company; Prairie Wind Transmission, LLC; Public Service Company of Oklahoma; Southwestern Electric Power Company; Southwestern Public Service Company; Transource Missouri, LLC; Transource Oklahoma, LLC; Tri-State Generation and Transmission Association, Inc.; Upper Missouri G. & T. Electric Cooperative, Inc.; Notice Establishing Answer Period

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