As Michigan continues to expand its role as the national leader in automotive production and technology, enhanced electrical resources are necessary to support new and existing factories, research facilities, and other automotive related groups.
General Motors, in expanding their Orion Assembly Plant, will be requiring additional energy resources from DTE. As part of DTE’s request for interconnection with ITC’s transmission system, ITC will create a second circuit from the Pontiac to Sunbird substations to support the increased energy needs of this expansion. Construction will begin Q3 2023 and be completed Q1 2025.
ITC’S APPROACH AND COMMITMENT
This project is an example of ITC’s ongoing commitment to the operational efficiency and reliability of Michigan’s high-voltage transmission grid. The company has invested $5 billion in capital project maintenance and transmission infrastructure improvements in Michigan since 2003. These investments are improving the reliability and safety of the transmission infrastructure, while ensuring its ability to meet new energy demands.
ITC’s approach to transmission infrastructure development takes into consideration the unique nature of every project. Projects are assessed individually for safety, reliability, cost-effectiveness, environmental impacts and community impacts to determine the best transmission solution for each project.

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