Risk: Medium Substation Operational

Thunderstone Substation - 230 kV Electrical Substation in Mesa, Arizona

United States

Overview

Thunderstone Substation is an operational electrical substation in Mesa, Arizona, owned and operated by Salt River Project. It operates at 230 kV, serving the regional power grid.

Thunderstone Substation is an operational electrical substation located in Mesa, Arizona, United States. Owned and operated by Salt River Project, the facility plays a key role in the regional transmission network, stepping down high-voltage electricity for distribution to residential, commercial, and industrial customers in the Phoenix metropolitan area. The substation operates at a voltage of 230 kV, a common transmission-level voltage in the United States, connecting to the Western Interconnection grid. As part of Salt River Project's infrastructure, it adheres to North American Electric Reliability Corporation (NERC) reliability standards and Federal Energy Regulatory Commission (FERC) regulations for transmission assets. The facility likely employs modern switchgear and protection systems to ensure grid stability and safety. Thunderstone Substation supports the growing energy demands of the East Valley region, an area with significant residential and commercial development. Its location near major load centers enhances grid reliability and reduces transmission losses. The substation's integration with renewable energy sources, such as solar farms in Arizona, contributes to the state's clean energy goals.

Environmental context

The substation is situated in the Sonoran Desert, a hot and arid climate that poses challenges for equipment cooling and vegetation management. Its urban location near Mesa requires careful land use planning to minimize visual and noise impacts. The 230 kV voltage level indicates a critical role in the regional grid, supporting both conventional and renewable energy sources.

Frequently asked questions

Thunderstone Substation is located in Mesa, Arizona, United States, at coordinates 33.426820, -111.674874.

Thunderstone Substation operates at a voltage of 230 kV, which is a standard transmission-level voltage in the United States.

Thunderstone Substation is owned and operated by Salt River Project, a major utility in Arizona.

As part of the U.S. electrical grid, Thunderstone Substation must comply with NERC reliability standards and FERC regulations for transmission assets.

A 230 kV substation steps down high-voltage electricity from transmission lines to lower voltages for distribution, ensuring reliable power supply to homes and businesses.
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