Overview
Three Mile Island 500kV Substation is a high-voltage electrical substation in Pennsylvania, USA, operated by FirstEnergy. It plays a critical role in the regional transmission grid.
Three Mile Island 500kV Substation is a key electrical infrastructure asset located near the Three Mile Island nuclear plant in Pennsylvania, United States. Operated by FirstEnergy, this substation operates at 500 kV, making it a high-voltage node in the regional transmission network. The facility is part of the PJM Interconnection, one of the largest electricity markets in the world. The substation's 500 kV voltage level indicates its role in long-distance bulk power transmission, connecting generation sources to load centers. In the United States, such high-voltage substations are regulated by the Federal Energy Regulatory Commission (FERC) and must comply with North American Electric Reliability Corporation (NERC) reliability standards. The facility's equipment likely includes advanced switchgear and protection systems to ensure grid stability. As part of the PJM grid, this substation supports the reliable delivery of electricity to millions of consumers in the mid-Atlantic region. Its proximity to the Three Mile Island generation facility underscores its importance in evacuating power from a major generation source. The substation's operational status and maintenance are critical to preventing disruptions in the regional power supply.
Environmental context
The substation is located in a rural area of Pennsylvania, near the Susquehanna River. The surrounding landscape includes agricultural land and residential communities. High-voltage substations like this one are designed to minimize environmental impact through proper insulation and containment of insulating fluids. The facility's operation is subject to environmental regulations regarding electromagnetic fields and noise, though no specific protected areas are known to be directly affected.
Frequently asked questions
Three Mile Island 500kV Substation is located near the Three Mile Island nuclear plant in Pennsylvania, United States, at coordinates 40.150080, -76.712932.
The substation is operated by FirstEnergy, a major electric utility company serving the mid-Atlantic region.
The substation operates at 500 kV (500,000 volts), which is a high voltage used for long-distance bulk power transmission.
As part of the US power grid, the substation must comply with NERC reliability standards and FERC regulations for transmission assets.
It serves as a critical node in the PJM Interconnection, connecting generation sources like the Three Mile Island nuclear plant to the transmission network and ensuring reliable power delivery.