Millersport Substation: Operational 138/69 kV Electrical Substation in Ohio, USA

Millersport Substation is an operational electrical substation located in the United States, with coordinates 39.889628, -82.565664. The facility operates at voltage levels of 138,000 volts and 69,000 volts, indicating a medium-to-high voltage substation that serves as a critical node in the local transmission and distribution network. As a substation in the United States, Millersport operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC). These bodies enforce reliability standards for the bulk power system, ensuring that substations like Millersport maintain grid stability and comply with mandatory cybersecurity and physical security requirements. The substation's location in Ohio places it within the PJM Interconnection, one of the world's largest competitive wholesale electricity markets. Its dual voltage levels suggest it connects transmission lines (138 kV) to sub-transmission or distribution circuits (69 kV), serving local industrial, commercial, and residential customers. The facility's operational status confirms its ongoing contribution to the regional power grid.

The substation is situated in a rural area near Millersport, Ohio, characterized by agricultural land and scattered residential development. Its operation involves electromagnetic fields and potential oil spill risks from transformers, though modern containment measures mitigate these. The site's proximity to the Buckeye Lake region requires careful stormwater management to protect local waterways.