Radnor Heights Substation - 230 kV Electrical Substation in Arlington, Virginia

Radnor Heights Substation is an operational electrical substation located in Arlington, Virginia, United States. Owned and operated by Dominion Energy, the facility operates at a voltage of 230 kV, classifying it as a high-voltage transmission substation critical for regional grid stability. As a 230 kV substation, Radnor Heights plays a key role in the transmission network, stepping down voltage for distribution or interconnecting transmission lines. Dominion Energy, a major utility in the Mid-Atlantic, operates this facility under the regulatory oversight of the Federal Energy Regulatory Commission (FERC) and the North American Electric Reliability Corporation (NERC), ensuring compliance with reliability standards. The substation supports the electrical infrastructure of the Washington, D.C. metropolitan area, contributing to reliable power supply for residential, commercial, and industrial users. Its location in Arlington, a densely populated urban county, underscores its importance in maintaining grid stability and meeting local energy demands.

The substation is situated in an urban environment in Arlington, Virginia, near the Potomac River. Its 230 kV operation requires careful management of electromagnetic fields and noise, typical for substations in residential areas. The facility's design and maintenance follow environmental guidelines to minimize impact on local ecosystems and communities.