Entergy's Transmission Organization
Entergy's Transmission Organization consists of the employees and assets used
to plan, operate and maintain Entergy’s transmission system. The Entergy
transmission system is comprised of the transmission systems of Entergy's
operating companies (EOCs): Entergy Arkansas, Inc.; Entergy Louisiana, LLC;
Entergy Mississippi, Inc.; Entergy New Orleans, Inc.; and Entergy Texas, Inc.
The Entergy transmission system is comprised of approximately 15,700 circuit
miles of transmission lines operated at 69 kV to 500 kV and approximately 1,500
substations.The transmission system spans portions of Arkansas, Louisiana,
Mississippi, Missouri and Texas, covering 114,000 square miles. This system is
regulated by the Federal Energy Regulatory Commission (FERC) and retail
regulators, including the Arkansas Public Service Commission, the Louisiana
Public Service Commission, the Mississippi Public Service Commission, the City
Council for the City of New Orleans and the Public Utility Commission of Texas.
The Entergy transmission system moves high voltage bulk electric power from
generating plants of the EOCs and third parties across an interconnected system
of transmission lines and substations. The power is delivered to wholesale
customers such as municipalities and cooperatives, as well as to approximately
2.8 million retail customers. The system also delivers power directly to large
commercial and industrial retail customers. These customers include refineries,
chemical plants, oil and gas processing facilities, pumping stations and large
manufacturing sites vital to the region and nation.
Entergy is a member of the Midcontinent Independent System Operator (MISO)
regional transmission organization. MISO has functional control of the Entergy's
transmission facilities and performs top-down transmission planning in
accordance with MISO's Open Access Transmission, Energy and Operating Reserve
Markets Tariff (MISO Tariff). The MISO Tariff provides for the development of a
comprehensive transmission expansion plan that meets both reliability and
economic expansion needs for entire MISO region.
The Entergy transmission system is part of the Eastern Interconnection, the
network of interconnected transmission systems that move bulk power throughout
the eastern half of the United States and eastern Canada. As a member of the
SERC Reliability Corporation (SERC), Entergy is committed to serving its
customers reliably across its interconnected grid of transmission lines and
Disclaimer: This website is provided for the convenience of Entergy's
customers served by the Entergy transmission system. Entergy shall not be
liable for damage, loss, injury, or any other claims of whatever nature arising
from the publication of the information at this site Please review this page
periodically to see if any enhancements or new features have been added.