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Facility Siting

Siting Authority for Electric Transmission Lines

Public Act 30 of 1995 grants siting authority for and established a Certificate of Public Convenience and Necessity process for proposed transmission lines that are greater than 5 miles in length and transferred at 345 kilovolts or more. The application for a proposed transmission line meeting this criteria is treated as a contested case with a one-year deadline for the Commission to either grant or deny the request.

To learn more about Electric Transmission Line siting, visit our Question and Answer page or download our Issue Brief.

Transmission Siting (Public Act 30) Cases

  • U-21471 – ITC Oneida Substation to Nelson Road Substation. Application expected to be filed 2024.
  • U-21472 – ITC Helix Substation to Hipple Substation. Application expected to be filed in 2024.
  • U-17272 – ATC Holmes to Old Mead Road in the Escanaba area. Settled. Approved.
  • U-17041 – ITC Weeds Lake. Approved.
  • U-16200 – ITC Expedited Siting of the Thumb Loop. Approved.
  • U-15680 – Wolverine Cherryland power line and substation. Settled and approved.
  • U-15234 – City of Taylor denies the City’s request to have Detroit Edison pay for undergrounding due to a city ordinance.
  • U-14861 – City of Hartland Genoa-Durant Line. Grants as modified above ground.
  • U-14933 – Troy-Bismark Line. Denied due to lack of quantifiable and non-quantifiable benefit to justify the line.

Siting Authority for Pipelines

Public Acts 9 and 16 of 1929 (Act 9 MCL 483.101 et seq. and Act 16 MCL 483.1 et seq.) grant siting authority for intrastate natural gas pipelines and both intra and interstate liquid pipelines to the MPSC. The Federal Energy Regulatory Commission (FERC) holds jurisdiction over interstate natural gas pipeline siting.

Applications for Act 9 and Act 16 projects are reviewed by MPSC staff to determine how each case will proceed. A proposed project can be handled on an ex parte basis, foregoing a full hearing process and saving expense for all parties involved, if it meets the following criteria:

  • The project does not result in increased rates and/or costs to customers in the instant case;
  • it does not require the acquisition of new right-of-way; and
  • it does not involve highly developed or environmentally sensitive areas.

All other cases proceed through full contested case proceedings. Interested parties may provide comments or petition to intervene (R 792.10410 Petitions, Page 50) in a case. A proposed intervenor must show that it has or will suffer an injury in fact, and that its affected interests fall within the zone of interest to be protected or regulated by statute or the constitutional guarantee in question.

Neither Act 9 nor Act 16 provide guidance relating to specific criteria for the Commission to consider in its decisions relating to pipeline applications. In 2012, the Commission issued an order in Docket No. U-17020 which stated, “…the Commission will grant an application pursuant to [Act 9 and] Act 16 when it finds that (1) the applicant has demonstrated a public need for the proposed pipeline, (2) the proposed pipeline is designed and routed in a reasonable manner, and (3) the construction of the pipeline will meet or exceed current safety and engineering standards.” The Commission is also required by law to determine if there is environmental impacts from the proposed project and whether those can be appropriately mitigated.

Current Act 9 and Act 16 cases can be searched for using the MPSC's online E-Dockets system.  For a summary on Enbridge's Act 16 application for the Line 5 Replacement Project, please visit the Line 5 webpage.  To access the entire application and related filings, please visit the U-20763 E-Docket page.

For additional questions and inquiries related to the Michigan Public Service Commission's pipeline safety program, please visit the Gas Safety & Operations contact webpage.