Industry builds $1.12 billion in new transmission in early 2013

After months of little to no activity, the U.S. transmission industry brought online or completed construction on seven projects totaling 600 miles of new transmission by the end of March, according to TransmissionHub data.

Six of the seven projects in 2013 were competitive renewable energy zone (CREZ) lines in Texas, and with the exception of one 138-kV project, all were 345-kV lines, totaling 543 line miles.

The seven projects together represent $1.12 billion in investment in the power transmission sector.

The $6.87 billion CREZ program, authorized by the Public Utilities Commission of Texas (PUCT), supports Texas’ build-out of renewable generation, primarily wind energy resources. The program ends this year, which will push into service over 30 transmission projects in 2013 alone.

In March, two CREZ projects were energized and two completed construction, representing 311 miles of line and $451 million of investment.

Lone Star Transmission energized the Scurry County South to West Shackelford transmission line on March 6, and the Lower Colorado River Authority on March 11 energized the 138-kV Kendall to Miller Creek to Paleface line, spokespersons for each of the companies told TransmissionHub. Cross Texas Transmission, meanwhile, completed construction on its Gray to Tesla and Gray to White Deer lines, which it expects to energize this summer, the company told TransmissionHub.

On Feb. 23, Lone Star completed construction on the West Shackelford to Navarro-Sam Switch CREZ line, which it expects to energize by the end of March.

Including the completion of construction on the West Shackelford to Navarro-Sam Switch line, the industry completed construction on two other lines in February, including American Transmission Company’s Rockdale to West Middleton line in Wisconsin, which entered service on Feb. 19, and Sharyland Utilities’ Silverton to Cottonwood CREZ line in Texas, which completed construction in late February.

Together, these three projects represent 289 line miles and $672 million of investment.

As these projects drew to a close, new projects came to light, the majority of which are in the Midwest. Entergy Arkansas, a subsidiary of Entergy (NYSE:ETR), is building out its system in southeast Arkansas to enhance reliability and meet growing electricity demand. The company is pursuing at least five 115-kV or 230-kV projects, which will largely enter service in the 2015-2017 timeframe.

Tri-State Generation and Transmission Association is studying a new 230-kV line to replace a project that it had originally been planning to pursue with Xcel Energy (NYSE:XEL), before the latter backed out of the project. The 120-mile San Luis Valley to Carson project would address reliability concerns and provide a second source of power into the San Luis Valley in Colorado. The project is expected to enter service in 2021.

Other projects saw significant developments, including the East Walton to Rockville project, which Georgia Transmission Corp. delayed indefinitely because of stagnant load growth.

The biggest project development was Portland General Electric’s (NYSE:POR) Cascade Crossing project, which the company in February pared back to 120 miles from 215 miles, and to $800 million from $1 billion. Construction on the project was also delayed by three years, and will now begin in 2017. The project is expected to be complete in the 2019-2020 timeframe.

This report was originally published by TransmissionHub. It is republished by permission.

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The Clarion Energy Content Team is made up of editors from various publications, including POWERGRID International, Power Engineering, Renewable Energy World, Hydro Review, Smart Energy International, and Power Engineering International. Contact the content lead for this publication at

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