Overview
22nd Street Substation is an operational electrical substation in Tucson, Arizona, owned and operated by Tucson Electric Power. It operates at 138 kV, serving the local grid.
22nd Street Substation is an operational electrical substation located in Tucson, Arizona, United States. Owned and operated by Tucson Electric Power, this facility plays a key role in the regional transmission network. The substation operates at a voltage of 138 kV, which is typical for sub-transmission and distribution-level infrastructure in the United States. As part of the Tucson Electric Power system, the substation is subject to North American Electric Reliability Corporation (NERC) reliability standards and Federal Energy Regulatory Commission (FERC) regulations for transmission-level assets. The 138 kV voltage class places it in the medium-to-high voltage range, supporting local distribution and industrial loads. The substation likely employs modern switchgear and protection systems compliant with ISO/IEC 61850 standards for substation automation. Located in an urban area of Tucson, the substation contributes to grid stability and reliability for residential, commercial, and industrial customers. Its operational status ensures continued service to the community, and its integration with the broader Western Interconnection grid enhances regional energy resilience. The facility's age and specific equipment details are not publicly available, but its role in the local power system is significant.
Environmental context
The substation is situated in an urban environment in Tucson, Arizona, where the arid climate and high summer temperatures place demands on electrical infrastructure for cooling and reliability. The 138 kV voltage level indicates it is a critical node for local distribution, and its urban location means it must meet stringent safety and environmental standards to minimize impact on surrounding communities. The facility's operation is subject to local zoning and environmental regulations, including those related to electromagnetic fields and noise.
Frequently asked questions
22nd Street Substation is located in Tucson, Arizona, United States, at coordinates 32.208781, -110.898743.
The substation is owned and operated by Tucson Electric Power, a utility serving southern Arizona.
The substation operates at 138 kV, which is a common voltage for sub-transmission and distribution in the US.
As part of the US grid, it must comply with NERC reliability standards and FERC regulations for transmission assets, as well as local utility requirements.
A 138 kV substation steps down high-voltage transmission power for local distribution, serving residential, commercial, and industrial customers in its area.