Overview
Sam Dam Substation is an operational electrical substation in the United States, owned and operated by Entergy. It operates at a voltage of 138 kV, serving as a key node in the regional power grid.
Sam Dam Substation is an operational electrical substation located in the United States, owned and operated by Entergy. The facility operates at a voltage of 138 kV, placing it within the typical range for sub-transmission and distribution substations that support regional grid stability. The substation's technical specifications indicate a 138 kV voltage level, which is common for facilities that step down power from high-voltage transmission lines to lower voltages for local distribution. As part of Entergy's network, Sam Dam Substation adheres to North American Electric Reliability Corporation (NERC) reliability standards and is subject to Federal Energy Regulatory Commission (FERC) oversight for transmission-level assets. The use of ISO/IEC 61850 substation automation standards is typical for modernizing protection and control systems. Located in a region with a mix of industrial and residential loads, Sam Dam Substation plays a critical role in maintaining grid reliability and supporting local electricity demand. Its operational status ensures continued service to the surrounding community, contributing to the overall resilience of the electrical infrastructure in the area.
Environmental context
The substation's location in a temperate climate zone with seasonal weather variations requires robust design to withstand storms and heat. As part of the Entergy grid, it supports both urban and rural loads, with voltage level critical to local distribution stability. The facility's age and equipment condition are typical for substations of its class, with routine maintenance ensuring minimal environmental impact.
Frequently asked questions
Sam Dam Substation is located in the United States, with coordinates approximately 31.0592 N, -94.1048 W. It is owned and operated by Entergy.
Sam Dam Substation operates at a voltage of 138 kV, which is typical for sub-transmission and distribution substations in the United States.
Sam Dam Substation is owned and operated by Entergy, a major utility company serving parts of the southern United States.
As part of the U.S. electrical grid, Sam Dam Substation must comply with NERC reliability standards and FERC regulations for transmission-level assets. It may also follow ISO/IEC 61850 standards for substation automation.
A 138 kV substation steps down high-voltage electricity from transmission lines to lower voltages for local distribution, ensuring reliable power supply to residential, commercial, and industrial customers.