Nagel Substation is a 500kV substation located in Nagel, Tennessee, US.

The works are expected to be commissioned in 2021.


Nagel Substation project, which is an upgrade substation, will be operated by Appalachian Power.

The designed voltage level of the substation is 500/138kV and the operating voltage level is 500/138kV.

The step-in voltage of the project is 500kV and the step-out voltage is 138kV. Upon completion, the substation will have a capacity of 750MVA.

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Nagel Substation project development status

The development of the Nagel Substation project was approved by Tennessee Regulatory Authority. The project is expected to be commissioned in 2021. Approximately $105m was financed by the authorities to undertake the construction works of the project.

About Appalachian Power

Appalachian Power (Appalachian) a subsidiary of American Electric Power Co Inc operates as an electric utility that generates, transmits and distributes electricity. It offers services such as online bill payment, paperless billing, energy audits, rebates and incentives, payment assistance, power outage reporting, meter reading, energy efficiency, energy conservation, electrical safety, upgrade service, home energy assessment, energy saving tips, load management services, and others. It owns and operates a network of overhead lines and underground lines. The utility serves residential, commercial, industrial and municipal customers in Virginia, West Virginia and Tennessee, the US.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.