Overview
St. Johnsbury Substation is an operational electrical substation in Vermont, USA, owned and operated by Vermont Electric Power Company. It operates at 115 kV, supporting regional grid stability.
St. Johnsbury Substation is an operational electrical substation located in Vermont, United States. Owned and operated by Vermont Electric Power Company (VELCO), this facility plays a key role in the state's high-voltage transmission network. The substation operates at 115 kV, a standard voltage level for sub-transmission and distribution interconnection. As part of VELCO's infrastructure, the substation is subject to North American Electric Reliability Corporation (NERC) reliability standards and Federal Energy Regulatory Commission (FERC) regulation. Vermont's grid is interconnected with the broader ISO New England system, requiring compliance with regional planning and operational protocols. The 115 kV voltage level indicates a medium-scale substation critical for local distribution and industrial supply. The substation supports the electrical needs of St. Johnsbury and surrounding communities, contributing to grid resilience in a region prone to winter storms. Its operational status ensures continued service for residential, commercial, and industrial customers. The facility's location in rural Vermont underscores its role in maintaining reliable power delivery across the state's mountainous terrain.
Environmental context
The substation is situated in a rural area of Vermont, characterized by forested hills and cold winters. Electrical infrastructure in such environments must withstand snow and ice accumulation, which can affect overhead lines and equipment. The facility's 115 kV voltage level is typical for sub-transmission lines that traverse natural landscapes, requiring vegetation management to prevent outages. The site's proximity to natural habitats necessitates adherence to environmental regulations for wildlife protection and land use.
Frequently asked questions
St. Johnsbury Substation is located in Vermont, United States, near the town of St. Johnsbury. Its coordinates are approximately 44.4179 N, -71.9839 W.
St. Johnsbury Substation operates at 115 kV (115,000 volts), which is a common voltage for sub-transmission and distribution substations.
The substation is owned and operated by Vermont Electric Power Company (VELCO), the state's primary transmission utility.
As part of the US electrical grid, the substation must comply with NERC reliability standards and FERC regulations. It also operates within the ISO New England regional transmission organization.
A 115 kV substation typically steps down high-voltage transmission power for distribution to local networks, serving industrial, commercial, and residential customers. It also provides switching and protection functions.