Overview
Humble Hearne Substation is an operational electrical substation in Texas, United States, owned and operated by Entergy. It operates at 69 kV, serving as a key node in the regional transmission grid.
Humble Hearne Substation is an operational electrical substation located in Texas, United States. Owned and operated by Entergy, a major utility in the region, the facility plays a critical role in the local power distribution network. With a voltage level of 69 kV, it is classified as a medium-voltage substation, typical for sub-transmission and distribution applications. The substation operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), ensuring compliance with reliability standards for grid stability. Entergy's infrastructure in Texas is part of the Electric Reliability Council of Texas (ERCOT) interconnection, which manages the state's independent grid. The 69 kV voltage level is common for stepping down power from higher transmission voltages to serve industrial and residential loads. As a substation in a rural area near Humble, Texas, the facility supports the region's energy needs, contributing to grid resilience and reliability. Its operational status and integration with Entergy's network underscore its importance in maintaining stable electricity supply for local communities and industries.
Environmental context
The substation is located in a rural area of Texas, where the local environment includes agricultural land and scattered residential developments. The 69 kV voltage level indicates a medium-scale facility that typically has a smaller physical footprint compared to high-voltage transmission substations. Its operation involves standard electromagnetic fields and noise, which are managed through regulatory compliance. The surrounding ecosystem may include grasslands and wetlands, but the substation's impact is localized and mitigated by standard environmental practices.
Frequently asked questions
Humble Hearne Substation is located in Texas, United States, near the city of Humble. Its coordinates are approximately 30.8565 N, -96.5702 W.
Humble Hearne Substation operates at 69 kV (69,000 volts), which is a medium-voltage level commonly used for sub-transmission and distribution in the US power grid.
The substation is owned and operated by Entergy, a major utility company serving parts of the southern United States, including Texas.
Substations in the US must comply with NERC reliability standards and FERC regulations. For facilities in Texas, they also operate within the ERCOT grid framework, which has its own reliability requirements.
A 69 kV substation typically steps down voltage from higher transmission levels (e.g., 138 kV or 230 kV) for distribution to industrial, commercial, and residential customers. It also provides switching and protection functions to maintain grid stability.