Montgomery-Callaway Connector Project
The Project includes approximately 30 miles of double-circuit, 345-kilovolt transmission line in Montgomery and Callaway counties. The proposed transmission line will connect the existing Burns substation in Callaway County to the existing Montgomery substation in Montgomery County.
About the Project

The regional grid operator, Midcontinent Independent System Operator (MISO), identified the need for this project to support new, third-party energy sources. As the incumbent energy provider, federal regulation requires Ameren Missouri to develop grid infrastructure projects that fulfill these needs.

Community Benefits

Increased Capacity

Increasing transmission capacity to meet changing energy needs

Reliability

Improving energy reliability for the surrounding region and local communities

Energy Sources

Promoting access to diverse energy sources

Development Opportunities

Growing economic development opportunities
Project Schedule

Fall 2024 – Early 2025

Routing, Stakeholder, and Public Engagement

Early 2025 – Fall 2025

Finalize routes

Fall 2025

File final route with Missouri Public Service Commission

Fall 2025 – Spring 2027

Receive a Certificate of Convenience and Necessity (CCN) decision from Missouri Public Service Commission

Spring 2027 – Spring 2028

Easement and permitting procurement

Fall 2027 – Spring 2029

Vegetation clearing & geotechnical exploration

Summer 2029 – 2030

Construction

Late 2030

Project in service
Next Steps
Following a detailed routing study and feedback from local residents, agencies and officials, a Preferred Corridor has been selected. Nearly 100% of the preferred corridor will parallel an existing Ameren right-of-way. We are currently developing a route within this corridor and encourage landowners to reach out to our Project team with concerns, questions or information about features on their property. Once a route has been developed within the preferred corridor, Ameren will file an application and submit this route to the Missouri Public Service Commission (MO PSC) in November 2025.
 

Virtual Engagement

View our self-paced, virtual engagement and interactive comment map to learn about the project and provide feedback.

Share Feedback

Complete a questionnaire for our routing team to help us understand the project area and inform the route selection process.
General Questions
Public & Stakeholder Involvement
Environmental & Agency Coordination