Overview
Marble Falls Substation is an operational 138 kV substation owned and operated by the Lower Colorado River Authority in Texas, United States. It plays a key role in regional grid stability.
Marble Falls Substation is an electrical substation located in Texas, United States, owned and operated by the Lower Colorado River Authority (LCRA). Operating at 138 kV, it is a transmission-level facility that steps down voltage for distribution to local communities and industries. The substation operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), which enforce reliability standards for bulk power systems. As a 138 kV facility, it is typical of medium-to-high voltage substations that serve as critical nodes in the regional grid, connecting generation sources to load centers. Located in the Texas Hill Country, the substation supports the LCRA's mission to provide reliable electric service to central Texas. Its operational status ensures continued power delivery to the Marble Falls area, contributing to the economic vitality and energy security of the region.
Environmental context
The substation is situated in the Texas Hill Country, a region characterized by limestone geology and sensitive watersheds. While substations have minimal direct environmental footprint, their operation supports grid reliability for water pumping and treatment facilities in the area. The 138 kV voltage level indicates moderate electromagnetic field exposure, typical for transmission infrastructure in rural-urban interface zones.
Frequently asked questions
Marble Falls Substation is located in Texas, United States, near the city of Marble Falls. Its coordinates are approximately 30.5552 N, -98.2578 W.
Marble Falls Substation operates at 138 kV (138,000 volts), which is a common transmission voltage for regional power distribution in the United States.
The substation is owned and operated by the Lower Colorado River Authority (LCRA), a public utility serving central Texas.
In the United States, substations must comply with NERC reliability standards and FERC regulations. These cover equipment maintenance, cybersecurity, and grid stability.
A 138 kV substation steps down high-voltage transmission power for distribution to local networks, ensuring reliable electricity supply to homes, businesses, and critical infrastructure.