Stonewall Substation: 138 kV Electrical Substation in the United States

Stonewall Substation is an operational electrical substation located in the United States, owned and operated by Potomac Edison. As a 138 kV substation, it plays a role in the transmission and distribution network, stepping down voltage for local distribution or interconnecting transmission lines. The facility is part of the broader electrical infrastructure serving the region. The substation operates under the regulatory framework of the United States, which includes NERC reliability standards and FERC oversight for transmission-level assets. At 138 kV, it is classified as a high-voltage substation, typically used for subtransmission or distribution. The equipment likely includes circuit breakers, transformers, and switchgear compliant with industry standards such as IEEE and ANSI. As part of Potomac Edison's network, Stonewall Substation contributes to grid stability and reliability in the area. Its operational status ensures continued service to residential, commercial, and industrial customers. The facility's location in a rural or suburban setting may influence its design and maintenance practices, focusing on resilience and safety.

The substation's operation involves electromagnetic fields and potential oil containment from transformers, which are managed through standard environmental practices. Its rural or suburban location may reduce direct environmental impact compared to urban installations. The 138 kV voltage level indicates moderate transmission capacity, with typical environmental considerations including vegetation management and wildlife protection.