Minnesota
The Minnesota segment of the proposed MariBell Transmission Project would span approximately 105 miles across portions of Olmsted, Mower, Fillmore and Houston counties following an existing transmission corridor.
The Regulatory Process
We are at the start of a multi-year regulatory process that includes evaluation by the Minnesota Public Utilities Commission (MPUC). The MPUC determines if the project is needed as well as the final proposed transmission line route, taking into consideration all information provided by the project developers, stakeholders, landowners and the general public before making its decision.
Two Key Approvals Must Be Obtained Before the Project Can Be Built
Certificate of Need (CON) identifies the issues the proposed project is designed to solve and how the project benefits the state and region:
CON Docket number: 25-121
Route Permit (RP) identifies where a project should be located, including an evaluation of alternatives:
RP Docket number: 26-156
In April of 2026, the MPUC accepted the Certificate of Need Application as complete and paused that process until the Route Permit Application is filed in Fall 2026 so that the applications may be considered as a joint proceeding. There will continue to be opportunities for public comment throughout the review process.
Regulatory Milestones
The MPUC has accepted the CON application and paused the remaining steps in the need review; the next milestone is submitting the RP application in Fall 2026. Once it is filed, the MPUC will begin a joint review process to evaluate the project’s necessity and proposed route.
The MPUC will determine the route following its review process, which will include opportunities for public input and involvement. The MPUC final decision will take approximately 12–18 months.
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Team
We plan to file our RP Application in fall 2026. After the permit is filed and accepted as complete by the MPUC, the regulatory review process begins.
Once the RP Application is deemed complete, the MPUC will hold public information and scoping meetings throughout the project area to begin developing the Environmental Impact Statement (EIS). These meetings, along with a written comment period, allow landowners and community members to:
- Ask questions of MPUC staff and the applicants.
- Provide input on the scope of study for the EIS.
- Suggest alternative routes for consideration by the MPUC.
- Suggest system alternatives (alternatives to the project) to be evaluated in the EIS.
- Address potential impacts and mitigation measures that should be studied in the EIS.
The EIS evaluates potential effects on land use, including agricultural operations and residences, water resources, natural habitats and other environmental factors. Proposed system alternatives should still meet the project's purpose and need. Proposed route alternatives can include minor alignment shifts as well as longer route alternatives, but should have the same start and end points as the project.
Following the close of the comment period, the MPUC publishes a decision outlining the topics and route alternatives that will be included in the EIS.
The Draft EIS will be published and made available for public review and comment.
After the Draft EIS is published, an administrative law judge (ALJ) will conduct public hearings at venues within the project area. Following the public hearings, a written comment period. Both of these public input opportunities are designed for the MPUC to receive comments on the project, including how potential impacts of the project could be addressed and what conditions should be required for the project to move forward. Advance notice of the public hearings will be provided via mail and publication within the newspaper of general circulation for the project area. The ALJ prepares a report summarizing the facts, conclusions and recommendations on the merits of the project for the MPUC to consider as part of the case record. The ALJ report may include recommendations on route selection and conditions that should be included in the RP.
The MPUC publishes the Final EIS and determines whether the EIS is adequate as part of the permitting process.
After reviewing the CON and RP applications, report from the ALJ, all public comments and the complete environmental review and permitting record, the MPUC will make its final CON and RP decisions at a scheduled MPUC meeting. MPUC meetings and hearings are open to the public. At that time, the MPUC will decide whether the project is needed and which route, or combination of routes, to approve, as well as any conditions the permit should include.
An RP can only be issued after a CON is granted, and the RP approval determines the transmission line route. Once approved, the utilities will pursue any additional required permits, such as those required by other state and federal agencies, depending on the designated route.
Input and engagement opportunities will be available throughout these processes.
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Do you have questions about the MariBell Transmission Project? Please email the team at connect@maribelltransmission.com.
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