Overview
Granite City Substation is an operational electrical substation in Minnesota, United States, owned and operated by Xcel Energy. It operates at a voltage of 115 kV, serving the regional grid.
Granite City Substation is an operational electrical substation located in Minnesota, United States. Owned and operated by Xcel Energy, the facility plays a key role in the regional power transmission network. With a voltage level of 115 kV, it is classified as a high-voltage substation, typical for sub-transmission and distribution systems in the area. The substation operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), which enforce reliability standards for the bulk power system. As part of Xcel Energy's infrastructure, it adheres to mandatory reliability standards and is subject to periodic audits and compliance requirements. The 115 kV voltage level is common for connecting distribution networks to the transmission grid, facilitating power flow to industrial, commercial, and residential customers. Environmentally, the substation is situated in a region with cold winters and moderate summers, which can affect equipment performance and maintenance schedules. Its location in Minnesota places it within the Midcontinent Independent System Operator (MISO) footprint, a regional transmission organization that coordinates grid operations across multiple states. The substation's role in voltage regulation and power distribution contributes to grid stability and reliability for the surrounding communities.
Environmental context
The substation is located in Minnesota, a state with a continental climate featuring cold winters and warm summers. This climate can impact substation equipment, such as transformers and switchgear, requiring robust insulation and heating systems. The area is predominantly rural with some industrial activity, and the substation supports local power distribution. Its operation aligns with MISO's grid management, which integrates renewable energy sources like wind and solar, influencing voltage regulation and load balancing.
Frequently asked questions
Granite City Substation is located in Minnesota, United States, at coordinates 45.576034, -94.141558.
Granite City Substation operates at a voltage of 115 kV, which is typical for sub-transmission and distribution substations.
Granite City Substation is owned and operated by Xcel Energy, a major utility company in the United States.
As part of the US bulk power system, Granite City Substation must comply with NERC reliability standards and FERC regulations, ensuring grid stability and security.
Granite City Substation serves as a node in the transmission network, stepping down voltage for distribution to local customers and helping maintain grid reliability within the MISO region.