Overview
Granite Reef Substation is an operational electrical substation in Arizona, United States, operated by Arizona Public Service. It operates at 69 kV, serving as a key node in the regional power grid.
Granite Reef Substation is an operational electrical substation located in Arizona, United States. Owned and operated by Arizona Public Service, this facility plays a critical role in the state's electrical infrastructure by stepping down transmission voltages for local distribution. The substation operates at a voltage of 69 kV, which is typical for sub-transmission or distribution-level assets in the United States. As part of the Arizona Public Service network, it is subject to NERC reliability standards and FERC regulations, ensuring grid stability and compliance with federal and regional requirements. The facility's location in the arid Southwest also necessitates robust design to withstand extreme temperatures and dust. Environmentally, the substation supports the growing energy demands of the Phoenix metropolitan area and surrounding communities. Its role in voltage regulation and power distribution helps integrate renewable energy sources, such as solar, which are abundant in the region. The substation's operational status ensures continued reliability for residential, commercial, and industrial customers.
Environmental context
Located in the Sonoran Desert, Granite Reef Substation operates in a hot, arid climate with high solar insolation. The facility's design must accommodate extreme temperatures and dust, which can affect equipment performance. Its location near urban areas means it supports growing electricity demand while potentially integrating distributed solar generation, contributing to grid resilience in a region prone to heatwaves and drought.
Frequently asked questions
Granite Reef Substation is located in Arizona, United States, near the coordinates 33.663604, -111.919978. It is operated by Arizona Public Service.
Granite Reef Substation operates at 69 kV (69,000 volts), which is a common voltage level for sub-transmission and distribution substations in the United States.
Granite Reef Substation is owned and operated by Arizona Public Service (APS), a major electric utility serving Arizona.
As part of the U.S. electrical grid, Granite Reef Substation must comply with NERC reliability standards and FERC regulations to ensure grid stability and safety.
A 69 kV substation typically steps down transmission voltages for local distribution, serving as a critical link between high-voltage transmission lines and lower-voltage distribution networks that deliver electricity to homes and businesses.