Marshalltown REC Substation - 69 kV Electrical Substation in Marshalltown, Iowa

Marshalltown REC Substation is an operational electrical substation located in Marshalltown, Iowa, United States. It is owned and operated by Consumers Energy Cooperative, a member-owned utility serving rural and suburban areas. The substation operates at a voltage of 69 kV, classifying it as a medium-voltage distribution substation that steps down power for local distribution. As a substation within the United States, it operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC) for reliability standards. The facility likely includes switchgear, transformers, and protection systems compliant with IEEE standards. Its 69 kV voltage level is typical for subtransmission or distribution substations in rural cooperatives. The substation plays a critical role in maintaining grid stability for the Marshalltown area, supporting residential, commercial, and agricultural loads. Its location in Iowa, a state with significant wind energy generation, may also involve integration of renewable energy sources into the distribution network. The facility contributes to the reliability of the local electrical infrastructure.

The substation is located in Marshalltown, Iowa, a region with a continental climate and agricultural land use. Electrical infrastructure in such areas must withstand seasonal temperature extremes and severe weather events like thunderstorms and tornadoes. The 69 kV voltage level indicates a medium-scale facility with moderate environmental footprint, primarily related to land use and electromagnetic fields. Proper maintenance of switchgear and transformers is essential to prevent oil leaks and minimize ecological impact.