Arizona siting committee to hold public meeting in January on 500-kV Ten West Link Project

Additional days for the hearing may be set, and the hearing may conclude earlier or later than anticipated, depending upon the number of parties that intervene, the amount of testimony presented, the amount of public comment, and the time needed for deliberations by the committee, the committee said

The Arizona Power Plant and Transmission Line Siting Committee on Dec. 17 said that it will hold a public meeting/hearing starting on Jan. 22, 2020 in Phoenix regarding DCR Transmission, L.L.C.’s application for a certificate of environmental compatibility authorizing the 500-kV Ten West Link Project, which includes the construction of a new, 125-mile transmission line between Arizona Public Service’s Delaney substation and Southern California Edison’s Colorado River substation.

The meeting/hearing will continue each weekday on Jan. 23, 2020, through Jan. 24, 2020, as necessary, at the same location, unless a tour is taken, in which case, the meeting/hearing will begin on Jan. 27, 2020, or an alternative date set by the committee chairman. The committee added the hearing will thereafter begin in Quartzsite, Ariz., on Jan. 27, 2020, and will continue on Jan. 28, 2020. The hearing will then continue on Feb. 6, 2020, in Phoenix and continue through Feb. 7, 2020, as necessary.

Additional days for the hearing may be set, and the hearing may conclude earlier or later than anticipated, depending upon the number of parties that intervene, the amount of testimony presented, the amount of public comment, and the time needed for deliberations by the committee, the committee added.

As part of the meeting/hearing, committee members will discuss the potential value of a tour, and, at the discretion of the chairman, may tour the location of the proposed power plants and transmission lines for the project, the committee said.

Separately on Dec. 17, the committee said that the applicant and all potential parties are to meet with the chairman for a pre-hearing conference on Jan. 15, 2020, in Phoenix.

As TransmissionHub reported, the company said in its application that the line would run about 103.4 miles from the Delaney substation near Tonopah, Ariz., until it crosses the Colorado River into California. The company noted that the entire length of the line would be 125 miles, using a combination of existing utility corridors, the U.S. Department of Energy’s (DOE) Energy Corridor, as well as private and state land. The line would ultimately terminate at the Colorado River substation near Blythe, Calif., DCRT said.

DCRT noted that the California ISO (CAISO), as part of the 2013-2014 Transmission Planning Process (TPP), identified an economically driven need for a transmission interconnection between the 500-kV buses at the Colorado River and Delaney substations. The Delaney-Colorado River 500-kV transmission line was approved for proposed development by the CAISO Board of Governors at its July 2014 board meeting, DCRT said, adding that the development of the line was put to bid in accordance with the CAISO’s FERC-approved tariff. In July 2015, the CAISO selected DCRT as the approved project sponsor to develop, permit, finance, build, own, operate, and maintain the line, DCRT said, adding that it and the CAISO executed the approved project sponsor agreement (APSA) in December 2015.

The proposed route begins at the Delaney substation, about 60 miles west of downtown Phoenix, exits that substation and goes north of Interstate 10 (I-10), and then west through the BLM Utility Corridor, paralleling the existing DPV transmission line until it intersects I-10 again, about 26.7 miles from the Delaney substation. 
From there, DCRT added, the proposed route parallels I-10 as it follows the DOE Energy Corridor for about 42 miles, and around mile marker 68.7, goes south for 10.2 miles, and then again follows the BLM Utility Corridor, heading west for 24.6 miles. Eventually, the line exits Arizona at around mile marker 103.5 and ultimately terminates at the Colorado River substation, just west of the town of Blythe, crossing the Colorado River along its 125-mile path.

The Arizona section of the proposed route is located within the planning areas of Maricopa County, La Paz County, and the Town of Quartzite. DCRT also said that the transmission corridor would generally require an ROW width of 200 feet. The proposed transmission structures would be between 72 feet and 195 feet tall, depending on the span length required and topography involved, with the average tower being about 160 feet high.

DCRT added that the project would require upgrades to the Delaney and Colorado River substations, including converting the Delaney substation from its existing ring-bus breaker configuration to a more reliable and robust breaker-and-a-half configuration.
The current project schedule anticipates the construction activities on the project would begin at the end of 2020, and that the line would be placed into operation by the end of 2021.

As noted in the filing, the project is managed by DCRT, which is a joint venture led by affiliates of Starwood Energy Group Global. Starwood Energy Group is an affiliate of Starwood Capital.