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Peoria County Reliability Project

Ameren Illinois is proposing the Peoria County Reliability Transmission Project to improve energy reliability for local customers in the Peoria County area. This Project includes the construction of a new 138 kV transmission line to connect the existing Alta substation in Peoria County, Illinois, to the existing Pioneer substation in the City of Peoria. The proposed project includes the upgrades of the existing substations. This project will strengthen our system by creating additional pathways to support energy needs for today and tomorrow.

Our goal is to have this new line in service and providing benefits to the local community by December 2025. 

Project Overview

Routing & Public Process

Community Benefits

  • Improve local energy reliability by creating additional pathways to support current and future energy needs
  • Help minimize power outage impacts to the local communities
  • Support expansion needed for continued area growth
  • Upgrade substations

As we continue to serve and invest in our communities, new projects – like the Peoria County Reliability Project – allow us to continue supporting the needs of our customers in your area.

Public and Stakeholder Involvement

We are engaging with community members, landowners, and stakeholders to learn as much as we can about Peoria County to develop a better overall project for this area. Our first series of engagement was held in September 2022 to gather input on the Preliminary Route Segments. All input received will be reviewed and considered during the development of the Preliminary Route Alternatives. Our next phase of engagement will be held in November 2022. Join our project email list to receive updates on the project. If you were unable to participate in any of the phases of engagement – connect with our project team today.

Project Schedule 

2022: Data Collection and Design

  • Gather public, stakeholder and agency input
  • Final route(s) identified
  • File final route(s) with Illinois Commerce Commission (ICC)

2023: Surveys and Real Estate

  • Certificate of Public Convenience and Necessity (CPCN) decision
  • Engineering and permitting
  • Environmental surveys and permitting
  • Easement acquisition process

2024: Preconstruction and Construction

  • Preconstruction activities
  • Construction begins

2025: Construction

  • Project in Service 

*All items shown are pending regulatory approvals. Schedule is subject to change.

Project Maps

Interactive Project Area Map

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Peoria County Project Maps

For a high-level overview of the Peoria County Reliability Project, view the PDFs below.

Route Segments - September 2022 (PDF)

Study Area – July 2022 (PDF)

Have a question for our team?

By phone:


By Mail:

Ameren Illinois Pioneer Park Operating Center
Attn: Peoria County Reliability Project
8420 N. University Street
Peoria, IL 61615

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