Company: EAI
Filing Date: 2025-02-18
Form Type: 10-K
Source: 0000065984-25-000012
Chunk: 748

Company: ENTERGY ARKANSAS, LLC
Filing Date: 2025-02-18
Form: 10-K
Item: Item 7
Chunk 748
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 local regulatory authorities, as described above, regulate the retail rates of the Utility operating companies.  The FERC regulates wholesale sales of electricity rates and interstate transmission of electricity, including System Energy’s sales of capacity and energy from Grand Gulf to Entergy Arkansas, Entergy Louisiana, Entergy Mississippi, and Entergy New Orleans pursuant to the Unit Power Sales Agreement.  See Note 2 to the financial statements for further discussion of federal regulation proceedings.

Transmission and MISO Markets

In December 2013 the Utility operating companies integrated into the MISO RTO.  Although becoming a member of MISO did not affect the ownership by the Utility operating companies of their transmission facilities or the responsibility for maintaining those facilities, MISO maintains functional control over the combined transmission systems of its members and administers wholesale energy and ancillary services markets for market participants in the MISO region, including the Utility operating companies.  MISO also exercises functional control of transmission planning and congestion management and provides schedules and pricing for the commitment and dispatch of generation that is offered into MISO’s markets, as well as pricing for load that bids into the markets.  The Utility operating companies sell capacity, energy, and ancillary services on a bilateral basis to certain wholesale customers and offer available electricity production of their owned and controlled generating facilities into the MISO resource adequacy construct (the annual Planning Resource Auction), as well as the MISO day-ahead and real-time energy markets pursuant to the MISO tariff and market rules.  The resource adequacy construct provided under the MISO tariff confers certain rights and imposes certain obligations upon load-serving entities, including the Utility operating companies, that are served from the transmission systems subject to MISO’s functional control, including the transmission facilities of the Utility operating companies.  The MISO tariff is subject to change and has recently undergone significant changes, including changes to its overall capacity accreditation methodology.  MISO is now pursuing a larger scale reassessment of its overall accreditation practices, including accreditation of renewable resources.

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Table of ContentsPart I Item 1Entergy Corporation, Utility operating companies, and System Energy

MISO administers a process governed by the MISO tariff and subject to the FERC regulation that governs the interconnection of new generation resources to the transmission system under MISO’s functional control.  This process generally involves parties that wish to interconnect new generation resources submitting to MISO requests to do so, which are then studied and analyzed by MISO, with the participation of its member transmission owners, to determine if the inter