Stonybrook Substation - Operational 69 kV Substation in the United States

Stonybrook Substation is an operational electrical substation located in the United States, with coordinates 46.529432, -94.453354. The facility operates at a voltage level of 69 kV, which is typical for sub-transmission and distribution substations that serve local communities and industrial areas. As part of the U.S. electrical grid, it falls under the regulatory oversight of NERC and FERC for reliability and compliance with standards such as NERC CIP for cybersecurity and physical security. The substation's 69 kV voltage class places it in the medium-voltage range, often used to step down power from higher transmission voltages for distribution to end users. In the U.S., substations of this scale are critical for maintaining grid stability and ensuring reliable electricity supply to residential, commercial, and industrial customers. The facility's operational status indicates it is actively contributing to the regional power network. Environmental considerations for substations include the management of insulating oils and SF6 gas, which are used in switchgear and transformers. Stonybrook Substation's location in a rural or suburban area of Minnesota suggests it may serve a mix of agricultural and residential loads. The facility's role in the local grid underscores its importance for community resilience and economic activity.

The substation is located in a region with a continental climate, experiencing cold winters and warm summers. Its 69 kV voltage level indicates it is likely a distribution substation, which typically has a smaller footprint and lower environmental impact than high-voltage transmission substations. The facility's operation involves standard environmental management practices for electrical equipment, including containment of insulating fluids and monitoring of SF6 gas emissions.