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Jamestown to Ellendale

TRANSMISSION LINE

Powering North Dakota for Generations
Transmission grid enhancements will continue providing reliable, cost-effective electricity for farms, businesses, and communities for today and the future.

Partnering with you. Learn more about our commitment to strong landowner partnerships. Landowner Resources

Overview

Imagine a future for North Dakota defined by a resilient, reliable electric grid that supports rural living and thriving communities. This vision drives the partnership between Otter Tail Power Company and Montana-Dakota Utilities Co. to develop, construct, and co-own an approximately 92-mile, 345-kilovolt (kV) transmission line in North Dakota. The Jamestown to Ellendale transmission line (JETx) will run from Otter Tail Power's Jamestown Substation to Montana-Dakota Utilities' Ellendale Substation.

High-level map showing the location of JETx relative to other transmission lines in the region.
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Overview map showing project corridors.
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Explore our interactive map

JETx Blog

Explore new topics in the JETx Blog!

September 2025

Shedding light on the grid

A strong electric grid increases reliability, meets demand by providing multiple pathways to distribute power, and keeps energy prices cost-effective. What makes up the electric system, or “grid,” that delivers electricity to your home?

Read more

Benefits

At Otter Tail Power and Montana-Dakota Utilities, we're focused on grid improvements to continue providing the reliable, low-cost electricity North Dakota depends on. Through long-range transmission planning, we're not just maintaining vital infrastructure, we're enhancing it. The JETx transmission line will benefit the region by helping to:

  • Enhance electric reliability

  • Increase resiliency to extreme weather events

  • Reduce transmission congestion

  • Increase access to low-cost energy

Schedule

Developing and constructing a transmission line is a multi-year effort. We'll continue coordinating with landowners, local governments, agencies, and other stakeholders throughout the duration of the project. We are anticipating an in-service date in 2028.

In 2023, the project was being developed with engagement from stakeholders and landowners. In 2024, we received a Certificate of Public Convenience and Necessity from the PSC. In August 2025, a Certificate of Corridor Compatibility and Route Permit Application was submitted to the PSC.
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* Schedule is subject to change

Connect with us

Otter Tail Power and Montana-Dakota Utilities have been engaging with landowners, business and property owners, agencies, and other stakeholders for more than two years.

  • Sign up for our newsletter

    Stay tuned for mailed and emailed newsletters.

  • Explore our interactive map

    See where we're proposing to build the new line.

    View the map
  • Connect with the team

    If you have questions about JETx,
    reach out.

    Send us a note

Partners

Otter Tail Power Company, an electric utility owned by Otter Tail Corporation, provides electricity and energy services for approximately 133,900 customers in 422 communities across in North Dakota, South Dakota, and Minnesota.

Montana-Dakota Utilities Co., a subsidiary of MDU Resources Group, Inc., distributes natural gas and generates, transmits, and distributes electricity in the northern Great Plains. The company serves more than 435,350 customers in 273 communities.

Library & FAQs

Download project and permitting documents and find answers in our FAQ section.

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Map & Routing

Learn more about how we route a transmission line and explore our interactive map.

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