Overview
Calmar Substation is an operational electrical substation in Iowa, United States, owned and operated by Alliant Energy. It operates at a voltage of 69 kV, serving the local grid.
Calmar Substation is an electrical substation located in Iowa, United States, owned and operated by Alliant Energy. The facility is operational and plays a role in the regional power distribution network, stepping down transmission-level voltages for local distribution. The substation operates at a voltage of 69 kV, which is typical for sub-transmission or distribution-level infrastructure in the United States. As part of Alliant Energy's network, it is subject to North American Electric Reliability Corporation (NERC) reliability standards and Federal Energy Regulatory Commission (FERC) regulations for grid stability and safety. The facility likely includes switchgear, transformers, and protection systems compliant with IEEE standards. Calmar Substation supports the electrical infrastructure of the surrounding community, ensuring reliable power delivery. Its location in a rural area of Iowa underscores its role in connecting remote customers to the broader grid. The substation's age and specific equipment are not detailed, but its operational status indicates ongoing maintenance and compliance with sector regulations.
Environmental context
The substation is situated in a rural area of Iowa, where agricultural land dominates the landscape. Electrical infrastructure in such settings typically has minimal direct environmental impact, though it supports the energy needs of farming operations and rural communities. The 69 kV voltage level suggests a distribution role, with lower electromagnetic field exposure compared to high-voltage transmission lines. Standard mitigation measures, such as vegetation management and oil containment for transformers, are likely in place to minimize ecological disturbance.
Frequently asked questions
Calmar Substation is located in Iowa, United States, near coordinates 43.181344, -91.859513. It is owned and operated by Alliant Energy.
Calmar Substation operates at a voltage of 69 kV, which is typical for sub-transmission or distribution-level substations in the United States.
Calmar Substation is owned and operated by Alliant Energy, a major utility company serving the Midwest United States.
Substations in the United States are subject to NERC reliability standards for grid stability and FERC regulations for interstate electricity transmission. Additionally, IEEE standards such as IEEE C37 for switchgear and IEEE 80 for grounding are commonly applied.
A 69 kV substation typically steps down transmission-level voltage (e.g., 138 kV or 230 kV) to distribution-level voltage (e.g., 12 kV or 34.5 kV) for local delivery to homes and businesses. It also provides switching and protection functions.