Ameren Missouri initiates substation upgrades and expansion projects

Ameren Missouri has commenced construction on upgrades to the Moscow Mills substation in Lincoln County to address rising electricity demand and improve service reliability. The project involves installing two new, higher-capacity transformers to replace equipment dating back to the 1990s. These upgrades are intended to support local growth and provide greater flexibility in restoring power during outages by automatically detecting and isolating problems. Construction is slated for completion by September 2027.

Separately, Ameren Missouri has submitted an application to the Missouri Public Service Commission for a new substation, tentatively named the Katy Substation, located southwest of Columbia. While the company has not officially released the exact location for security reasons, application documents suggest the site may be near Little Bonne Femme Creek. If approved, the project aims to segment existing transmission lines to prevent widespread outages and provide options for future grid expansion. Construction for the Columbia-area project is expected to begin in 2027.