Overview
Northeast Loop Substation is an operational 138 kV substation in Tucson, Arizona, owned and operated by Tucson Electric Power. It plays a key role in the regional electrical grid.
Northeast Loop Substation is a 138 kV electrical substation located in Tucson, Arizona, United States. Owned and operated by Tucson Electric Power, the facility is part of the company's transmission and distribution network serving the Tucson metropolitan area. As a substation operating at 138 kV, it falls within the high-voltage range typical for sub-transmission and distribution systems in the US. 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. In Arizona, the Arizona Corporation Commission oversees utility operations. The 138 kV voltage level is commonly used for distributing power from transmission lines to local distribution networks, making this substation a critical node for grid stability in the region. As part of Tucson Electric Power's infrastructure, Northeast Loop Substation supports the electrical needs of residential, commercial, and industrial customers in Tucson. Its location in an urban area underscores its importance for local grid reliability. The substation's operational status ensures continued service to the community, contributing to the overall resilience of the regional electrical system.
Environmental context
The substation is situated in an urban area of Tucson, Arizona, a region characterized by a hot desert climate. Electrical infrastructure in such environments must be designed to withstand high temperatures and occasional monsoon storms. The 138 kV voltage level indicates that this substation likely serves as a distribution hub, minimizing transmission losses over shorter distances. Its urban location means it is subject to local land-use regulations and may incorporate measures to reduce visual impact and electromagnetic fields.
Frequently asked questions
Northeast Loop Substation is located in Tucson, Arizona, United States, at coordinates 32.269750, -110.916627.
Northeast Loop Substation operates at 138 kV (138,000 volts), which is a common voltage for sub-transmission and distribution in the US.
Northeast Loop Substation is owned and operated by Tucson Electric Power, a utility serving the Tucson area.
As part of the US bulk power system, Northeast Loop Substation must comply with NERC reliability standards and FERC regulations. State-level oversight is provided by the Arizona Corporation Commission.
A 138 kV substation typically steps down voltage from higher transmission lines (e.g., 230 kV or 500 kV) to distribution levels, serving as a critical node for delivering electricity to local networks.