Monthly Project Review September 2017

TransmissionHub tracked nearly $190m worth of new projects in September, with six projects announced last month, including a new 115-kV transmission line by Xcel Energy’s (NYSE:XEL) Southwestern Public Service (SPS).

SPS is proposing the new single-circuit line between the existing Mustang and Shell CO2 substations. The approximately $20.2m project would be built within nine miles of right of way, and is needed to address reliability issues in Yoakum County, Texas.

American Electric Power (NYSE:AEP), through its subsidiaries, announced five new projects last month. Public Service Company of Oklahoma, for instance, has proposed rebuilding an existing 69-kV transmission line between the Hugo and Valliant substations. The estimated $27m line will address future load growth, and is expected to be completed by late 2018.

AEP Ohio and AEP Ohio Transmission Company are planning the approximately $50m Pickaway-Madison Area Improvements project in order to ensure reliability in the region. According to the companies, the project consists of two phases, with the first phase involving building about seven miles of 69-kV line to provide another source of power and improve reliability in the area, and the second phase involving rebuilding about 26 miles of 69-kV transmission line to modernize the transmission infrastructure to provide more reliable power to local customers. Phase 1 will be complete in fall 2019, while Phase 2 will be complete in spring 2020.

AEP Ohio and AEP Ohio Transmission Company are also planning the new Guernsey-Harrison Power Improvements project, which involves rebuilding about 24 miles of an existing 69-kV transmission line in Guernsey and Harrison counties. The approximately $25m project is needed to update the aging infrastructure to ensure reliability in the area, and is expected to be completed in spring 2021.

Another project announced by an AEP subsidiary – Appalachian Power – is the Dearington-Rivermont Transmission Project. According to the company, preliminary project route options include rebuilding about six miles of existing 69-kV transmission line from the Dearington substation near the intersection of Morgan and Third Streets, to the Reusens substation off Old Trents Ferry Road. Another proposed route includes building about a mile of new transmission line just east of the Centra Hospital to a connection point to the existing transmission line near Hollins Mill Road, the company said. The $20m project, scheduled to be in service in December 2020, is needed to address future growth in the region and ensure reliability.

Another AEP project is Indiana Michigan Power’s Muncie-Anderson Transmission Line Rebuild Project, which involves rebuilding about 21 miles of 138-kV transmission line between the company’s Delaware substation in Muncie, Ind., and its Madison substation in Anderson. The project also involves retiring about five miles of overhead transmission line and about two miles of underground transmission line. The approximately $48m project is needed to ensure reliability. The facilities are scheduled to be placed in service in spring 2020.

Six projects saw significant changes in September. Idaho Power, subsidiary of IDACORP (NYSE:IDA), received a certificate of public convenience and necessity (CPCN) from the Idaho Public Utilities Commission for the company’s 138-kV transmission line and related facilities that will provide redundant service from the Wood River substation near Hailey into the Ketchum substation.

The Arizona Corporation Commission on Sept. 12 said that it has approved the Arizona Power and Transmission Line Siting Committee’s certificate of environmental compatibility authorizing Salt River Project’s (SRP) Price Road Project, which involves a new double circuit, 230-kV line connecting SRP’s Knox substation in Chandler to a new substation at Germann and Price Road. To maintain reliable electric service and to meet forecast energy demand, SRP will bring the new power line from its Knox substation to a 230-kV substation site, identified as RS-27, located in the northern section of the Price Road Corridor, the project’s website noted. The proposed route will run east from the Knox substation, primarily on the south side of the Loop 202, to the north-west portion of the Price Road Corridor, according to the site.

Ameren (NYSE:AEE) on Sept. 6 said that its wholly owned subsidiary, Ameren Transmission Company of Illinois (ATXI), has selected a final route for the Mark Twain Transmission Project, which involves a 345-kV transmission line and substation to be built in northeast Missouri. The approximately 100-mile route, which would be nearly 100% co-located on existing right of way (ROW), has received assents from the commissions of the five counties in which the line would be located – namely, Adair, Knox, Lewis, Marion, and Schuyler counties, the company said. ATXI expects to invest about $250m in the project, which is scheduled to be placed in service in December 2019, Ameren said.

The Massachusetts Energy Faculties Siting Board, in a Sept. 8 tentative decision, said that it approves Eversource Energy’s (NYSE:ES) Walpole to Holbrook Reliability Project, which includes a new 14.7-mile, 115-kV overhead transmission line and a new 115-kV switching station. The board noted that the project’s estimated cost, based on a planning grade cost estimate (i.e., -25% to +25%), is $34.6m, with a projected in-service date of April 2019.

Sharyland Utilities L.P. received approval by the Public Utility Commission of Texas for the company’s approximately $18.6m Stiles-to-Coates project, which involves a new 7.1-mile, 138-kV transmission line. The project will accommodate load growth in the Stanton service area associated with oil and gas activities.

Cleco and Entergy (NYSE:ETR) last month said that construction is underway on the 230-kV Terrebonne to Bayou Vista line, which is a joint effort between Cleco and Entergy’s Entergy Louisiana. The line will run approximately 36 miles from Gray to Patterson. The approximately $113m project is needed to ensure reliability in the region. The final portions of the project are expected to be completed by fall 2018.