Grid United, an independent transmission company based in Houston, Texas, is developing Three Corners Connector.
Three Corners Connector benefits both customers and power producers in Colorado and Oklahoma. Benefits include:
By connecting the two largest electric grids in the United States, transmission lines such as Three Corners Connector will strengthen the U.S.’ electric transmission grid to create a more resilient, reliable, and efficient electric system that takes advantage of the nation’s abundant and geographically dispersed natural resources to benefit all consumers.
Numerous studies by the U.S. Department of Energy (DOE) and other government and nongovernmental organizations have demonstrated a need for long-distance transmission projects, including high voltage direct current transmission lines like Three Corners Connector.
Three Corners Connector’s route is 290 miles with endpoints in Pueblo, Colorado and Guymon, Oklahoma.
The project gathered stakeholder feedback and survey data. In the first quarter of 2025, the project will submit a proposed route for regulatory approval. The route will remain “proposed” until it receives approval from county, state, and federal regulatory bodies.
Yes, a small portion (less than 9% of the proposed route), is on public lands, though the vast majority is on private lands.
HVDC technology is the most efficient way to transport electricity over long distances. To find out more, click here.
By utilizing direct current (DC) technology, electricity can be sent in either direction, east or west. Three Corners Connector will transport electricity when and where it is needed. It can serve to balance the electricity needs in the Western and Eastern Interconnect grids.
The low levels of EMF from transmission lines are difficult for human beings to perceive, and the magnetic fields created are not perceptible. There are no known health impacts that result from transmission lines. The magnetic field of a DC line is similar in nature to the natural magnetic field of the Earth (the same field that allows a compass to work), and the strength of the magnetic field at the edge of the ROW is comparable to the strength of the Earth’s field. There is no stray voltage from a DC line, and DC lines do not induce voltage on nearby surfaces. To learn more, click here.
The Three Corners Connector project team is actively engaging with stakeholders along the route. Additionally, there will be opportunities for public input on anticipated impacts during the permit approval processes. If you would like to get in touch with the Three Corners Connector project team, please don’t hesitate to reach out.
Yes. Although the project acquired easements, the land will still belong to the landowners and can continue to be utilized for activities such as farming, grazing cattle and other activities that interfere with neither the construction nor operation of the line.
Whenever feasible, the proposed route follows property lines or existing infrastructure. Land agents worked with landowners on route placement during the landowner consultation phase.
The project acquired a 200-foot ROW from landowners along the proposed route. Additionally, the project will acquire Additional Temporary Workspace (ATWS) as needed for construction.
Construction typically involves the following:
Construction for Three Corners Connector will take approximately three years. Certain land use practices will be restricted while construction is taking place on your land such as excavations or topographic changes. When construction is complete, we will restore the easement area to its original condition and appearance, at which point landowners can resume normal use with a few exceptions, laid out in the executed Easement Agreement.
Yes, all topsoil, up to 12 inches, or topsoil to depth of cultivation, whichever is greater, will be stripped and segregated.
Reseeding will occur in compliance with the Natural Resources Conservation Service (NRCS). Landowners will also have the option to provide a specified seed mix.
Construction and maintenance of the towers and converter sites require a combination of temporary and permanent access roads. These roads will be identified during the landowner consultation phase, and landowners with access roads on their property will be compensated accordingly.
Construction crews will make an effort to access the right-of-way from public roads that intersect or are adjacent to the right-of-way. Once an access road is established, construction will follow the right-of-way to the next access road location, which will preferably be located at the next public road crossing. In some instances, depending on topography or other environmental conditions, off-right-of-way access may be needed to facilitate the construction or maintenance of the line.
Multiple permits and approvals are required prior to construction, including state regulatory approvals, land use permits, highway crossing permits, construction stormwater permits and demolition notifications. Three Corners Connector is currently coordinating with local, state, and federal permitting authorities and will continue to do so over the course of the project’s development.
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