160 miles of transmission lines planned for eastern SD, costing upward of $2 billion

By: Joshua Haiar

Outlets: South Dakota Searchlight

Published: September 22, 2026

Words: 575

Last Updated: 2 weeks, 3 days ago

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South Dakota regulators are considering permit applications for projects that would add about 160 miles of electrical transmission lines along the eastern edge of the state.

Transmission lines carry high-voltage power over long distances.

The larger proposal is part of the PowerOn Midwest Project, from companies including Xcel Energy and Otter Tail Power. It calls for about 90 miles of 765-kilovolt transmission line in South Dakota through Grant, …

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