Get an Overview of the Grand Prairie Gateway Project

The proposed Grand Prairie Gateway Project is a new 345kV electric transmission line to be constructed between ComEd’s existing substations near the communities of Byron and Wayne. The new line will connect these substations and travel across the counties of Ogle, DeKalb, Kane and DuPage. Through an integrated process incorporating input from the public and other community stakeholders, ComEd has identified a primary route and an alternate route for the transmission line within the transmission line study area. The line will run for approximately 60 miles.

On Dec 2, 2013, ComEd filed with the Illinois Commerce Commission for a Certificate of Public Convenience and Necessity to construct, operate and maintain the Grand Prairie Gateway Transmission Line. The ICC has assigned this Case Number: 13-0657.

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High voltage electricity is moved across the electric grid by transmission lines. Just like highways that don’t have enough lanes, transmission lines with insufficient capacity become congested, reducing efficiencies and increasing  costs of delivering power. PJM Interconnection, the independent regional transmission grid operator and planner for the ComEd service territory, has approved the Grand Prairie Gateway Project as the best solution for addressing current system congestion and ensuring the continued efficient flow of electricity across northern Illinois.

System congestion increases the costs of delivering power to customers. The addition of this new transmission line will allow for more efficient flow of electricity across the grid, alleviating congestion and reducing costs. The proposed line adds a third west-east path across the ComEd territory, which provides ComEd with more options to meet customer needs.

ComEd concluded in early October three rounds of public open houses and stakeholder working group meetings, which had a total attendance of approximately 2000. The primary and alternate routes reflect public input and data gathering, including a review of environmental and real estate records, overall constructability and cost.

On Dec 2, 2013, ComEd filed with the Illinois Commerce Commission for a Certificate of Public Convenience and Necessity to construct, operate and maintain the Grand Prairie Gateway Transmission Line. The ICC has assigned this Case Number: 13-0657. The Commission has 225 days to issue its decision on the line. Upon approval by the ICC, construction of the line is expected to begin in early 2015 and would be in service in the second quarter of 2017.

Case Information: All information related to the case including the application, case filings, the case schedule and ICC rulings can be found on the ICC's e-Docket.

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