Longfield Substation - 138 kV Electrical Substation in Ohio, United States

Longfield Substation is an electrical substation located in Ohio, United States, with coordinates 41.365695, -81.467653. It is owned and operated by Illuminating Company and is currently operational. The substation operates at a voltage of 138 kV, which is a common transmission-level voltage in the United States, indicating its role in distributing power from the transmission grid to local distribution networks. As a 138 kV substation, Longfield Substation falls under the regulatory oversight of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC). These bodies enforce reliability standards and ensure the stability of the bulk power system. The substation's equipment likely includes circuit breakers, transformers, and switchgear compliant with IEEE standards, typical for facilities of this scale in the region. The substation plays a critical role in maintaining grid stability for the surrounding area, which includes residential, commercial, and industrial customers. Its location in Ohio, a state with a diverse energy mix including coal, natural gas, and renewables, underscores its importance in integrating power from various generation sources. The operational status and voltage level suggest it is a key node in the regional electrical infrastructure.

The substation's location in Ohio places it within a region with a mix of urban and suburban development. The 138 kV voltage level indicates it is part of the transmission network, which can have environmental considerations such as electromagnetic fields and land use for rights-of-way. The facility's age and specific equipment are not detailed, but typical substations of this type are designed to minimize environmental impact through proper siting and insulation.