Overview
Greenbrier Substation is an operational electrical substation in Arizona, United States, operated by Arizona Public Service. It operates at a voltage of 69 kV, serving the local grid.
Greenbrier Substation is an operational electrical substation located in Arizona, United States. Owned and operated by Arizona Public Service, it plays a role in the regional power distribution network. The substation operates at a voltage of 69 kV, which is typical for sub-transmission and distribution-level infrastructure in the United States. As part of the Arizona Public Service system, Greenbrier Substation is subject to regulatory oversight by the Federal Energy Regulatory Commission (FERC) and must comply with North American Electric Reliability Corporation (NERC) reliability standards. Substations of this voltage class are critical for stepping down power from higher transmission voltages to distribution levels, serving residential, commercial, and industrial customers in the Phoenix metropolitan area. The substation's location in a growing urban region underscores its importance for maintaining grid stability and meeting increasing electricity demand. Its operational status ensures continued support for local infrastructure, contributing to the reliability of the broader Western Interconnection grid.
Environmental context
The substation is situated in a semi-arid desert climate typical of central Arizona, where high summer temperatures can drive peak electricity demand for air conditioning. The surrounding area is a mix of residential and commercial development, with proximity to the Phoenix metropolitan region. Substations in such environments must be designed to withstand extreme heat and dust, and their operation supports the integration of renewable energy sources like solar power, which is prevalent in the state.
Frequently asked questions
Greenbrier Substation is located in Arizona, United States, near the Phoenix metropolitan area. Its coordinates are approximately 33.642995 N, -112.187151 W.
Greenbrier Substation operates at a voltage of 69 kV, which is a common voltage for sub-transmission and distribution substations in the United States.
Greenbrier Substation is owned and operated by Arizona Public Service (APS), a major electric utility serving Arizona.
Substations in the United States must comply with NERC reliability standards and are regulated by FERC for transmission-level assets. For distribution-level substations, state public utility commissions also have oversight.
A 69 kV substation typically steps down voltage from higher transmission levels (e.g., 115 kV or 230 kV) to distribution voltages (e.g., 12 kV or 25 kV) for delivery to homes and businesses. It also provides switching and protection functions.