Private company

Potomac-Appalachian Transmission Highline

Proposed 290 mile 765 kilovolt electric power transmission line

The Potomac-Appalachian Transmission Highline (PATH) was a proposed 290 mile 765 kilovolt electric power transmission line designed to supply power from the Amos Substation in Putnam County, West Virginia, to a proposed electrical substation to be constructed in Frederick County, Maryland. If approved, the transmission line would have been owned and operated by subsidiary companies of Allegheny Energy and the American Electric Power Company.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

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The Potomac-Appalachian Transmission Highline (PATH) was a proposed 290 mile 765 kilovolt electric power transmission line designed to supply power from the Amos Substation in Putnam County, West Virginia, to a proposed electrical substation to be constructed in Frederick County, Maryland. If approved, the transmission line would have been owned and operated by subsidiary companies of Allegheny Energy and the American Electric Power Company.2

Sources

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