Overview
Knox Substation is an operational electrical substation in Arizona, United States, owned and operated by SRP. It operates at 230 kV, serving as a key node in the regional transmission grid.
Knox Substation is an operational electrical substation located in Arizona, United States. Owned and operated by Salt River Project (SRP), the facility plays a critical role in the regional power transmission network. With a voltage level of 230 kV, it is classified as a high-voltage substation, typical of large-scale infrastructure supporting bulk electricity transfer. 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 the U.S. transmission grid. SRP, a major utility in Arizona, manages a diverse portfolio of generation and transmission assets, and Knox Substation is integral to maintaining grid stability in the Phoenix metropolitan area. As part of SRP's transmission system, Knox Substation facilitates the reliable delivery of electricity to residential, commercial, and industrial customers. Its location in a rapidly growing region underscores its importance in supporting economic development and energy security. The substation's operational status ensures continued grid resilience and voltage regulation for the surrounding area.
Environmental context
The substation is situated in an arid desert environment typical of central Arizona, where high summer temperatures drive peak electricity demand for air conditioning. The facility's 230 kV infrastructure supports integration of renewable energy sources, such as solar farms, which are prevalent in the region. Its urban-proximate location requires careful management of electromagnetic fields and compliance with local land-use regulations to minimize ecological disruption.
Frequently asked questions
Knox Substation is located in Arizona, United States, at coordinates 33.291896 N, -111.965360 W. It is owned and operated by Salt River Project (SRP).
Knox Substation operates at 230 kV (230,000 volts), which is a high-voltage level used for bulk power transmission in the U.S. electrical grid.
Knox Substation is owned and operated by Salt River Project (SRP), a major utility company serving the Phoenix metropolitan area and central Arizona.
As part of the U.S. transmission grid, Knox Substation must comply with NERC reliability standards and FERC regulations. These ensure grid stability, cybersecurity, and operational safety.
A 230 kV substation like Knox steps down transmission voltage for distribution or interconnects transmission lines. It is critical for grid reliability, voltage regulation, and integrating power from generation sources to load centers.