Overview
Downing Substation is an operational electrical substation in Arizona, United States, owned and operated by Arizona Public Service. It operates at a voltage of 69 kV, serving the local grid.
Downing Substation is an operational electrical substation located in Arizona, United States. Owned and operated by Arizona Public Service, the facility plays a key role in the regional power distribution network. With a voltage level of 69 kV, it is classified as a medium-voltage substation, typical for distributing electricity to residential and commercial areas. As part of the U.S. electrical infrastructure, Downing Substation operates under the regulatory oversight of the Federal Energy Regulatory Commission (FERC) and adheres to North American Electric Reliability Corporation (NERC) reliability standards. These frameworks ensure grid stability and compliance with mandatory reliability requirements. The substation's equipment likely includes circuit breakers, transformers, and switchgear designed for 69 kV operations, following industry standards such as IEEE C37 for substation design. The substation's location in Arizona places it within a region experiencing growing energy demand due to population expansion and climate-driven cooling needs. Its role in distributing power from transmission lines to local distribution networks is critical for maintaining service reliability. The facility's operational status ensures continued support for the surrounding community's electrical needs.
Environmental context
The substation's location in Arizona's arid climate presents unique operational considerations, including high ambient temperatures that can affect equipment efficiency and cooling requirements. The facility's 69 kV voltage level indicates it serves as a distribution substation, typically situated in suburban or urban areas to minimize transmission losses. Its proximity to residential zones necessitates adherence to noise and electromagnetic field regulations, while the surrounding desert environment requires careful management of vegetation and wildlife interactions to prevent outages.
Frequently asked questions
Downing Substation is located in Arizona, United States, at coordinates 33.652098, -111.892734.
Downing Substation operates at a voltage of 69 kV, which is typical for distribution-level substations.
Downing Substation is owned and operated by Arizona Public Service, a major utility in the region.
As part of the U.S. electrical grid, Downing Substation must comply with NERC reliability standards and FERC regulations for grid stability and safety.
A 69 kV substation typically steps down transmission voltage for local distribution, serving residential, commercial, and industrial customers in its area.