Overview
Sandario Substation is an operational electrical substation in Arizona, United States, owned and operated by Southwest Transmission Cooperative. It operates at a voltage of 115 kV, serving regional grid stability.
Sandario Substation is an operational electrical substation located in Arizona, United States. Owned and operated by Southwest Transmission Cooperative, the facility plays a role in the regional transmission network. With a voltage level of 115 kV, it is classified as a medium-voltage substation, typical for distributing power from high-voltage transmission lines to local distribution systems. The substation operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), which set reliability standards for the bulk power system. As part of the Southwest Transmission Cooperative, the facility adheres to these standards to ensure grid stability and reliability. The 115 kV voltage level is common for subtransmission systems that serve industrial and urban areas. Environmentally, the substation is situated in a region characterized by arid desert climate, which influences infrastructure design and maintenance. The facility contributes to the electrical infrastructure of Arizona, supporting residential, commercial, and agricultural loads. Its operational status ensures continued service to the local community, with minimal environmental footprint typical of substations.
Environmental context
The substation is located in the Sonoran Desert region of Arizona, characterized by arid conditions and high temperatures. These environmental factors necessitate robust cooling and insulation systems for electrical equipment. The facility's design accounts for dust and heat, common challenges in desert environments. Its location in a sparsely populated area reduces direct human exposure to electromagnetic fields, while its role in the grid supports energy distribution across the region.
Frequently asked questions
Sandario Substation is located in Arizona, United States, at coordinates 32.249278, -111.240418.
Sandario Substation operates at a voltage of 115 kV, which is typical for subtransmission and distribution substations.
Sandario Substation is owned and operated by Southwest Transmission Cooperative, a utility cooperative in the southwestern United States.
As part of the US bulk power system, Sandario Substation must comply with NERC reliability standards and FERC regulations for transmission-level assets.
A 115 kV substation typically steps down voltage from higher transmission levels (e.g., 230 kV or 500 kV) for distribution to industrial and residential customers, ensuring grid stability and reliability.