Clear Springs-Hutto 345kV Transmission Line Construction Project

Clear Springs-Hutto 345kV Transmission Line Construction Project

Clear Springs-Hutto 345kV Transmission Line Construction Project

Type: Transmission
Scope: Constructed 160 miles of 345kV transmission line in Southcentral Texas.
Location: Hutto, Texas
Client: Lower Colorado River Authority

In March 2010, the Lower Colorado River Authority (“LCRA”) (one of the largest wholesale power utilities in Texas) contracted Irby to construct the Clear Springs to Hutto Transmission Line. The project scope consisted of 88 miles of 345kV new transmission line construction with approximately 160 circuit miles of bundled conductor on lattice towers and steel poles.

Irby executed the project to schedule with assistance from fellow Quanta Services (PWR:NYSE) subsidiary company Can-Fer Utility Services, a specialist in the construction of electrical and substation infrastructures including foundations and directional drilling. The project also benefitted from the use of helicopter assisted stringing in preservation of environmental right of way and overall schedule maintenance.

To see Irby at work on this project, watch this local news story.

Start Date: March 2010
Completion Date: February 2011

 

If you would like to request information on this project or submit a request for bid, click here. 

 

Thomas-Warthen 500kV Transmission Line Construction Project

Thomas-Warthen 500kV Transmission Line Construction Project

Thomas-Warthen 500kV Transmission Line Construction Project

Type: Transmission
Scope: Constructed 38.75 miles of 500kV transmission line.
Location: Gibson, Georgia
Client: Georgia Transmission Corporation

Georgia Transmission Corp. (“GTC”) is a not-for-profit cooperative owned by 39 Electric Membership Corporations (“EMC’s”) in Georgia. Georgia’s EMC’s collectively provide power to more than four million people in the state. In May 2015, GTC contracted Irby to construct 38.75 miles of 500kV transmission line to connect its substations in Thomson and Warthen.

Energized in May 2017, the Irby scope included the erection of 157 steel towers, concrete foundations (with assistance from Reliable Constructors), and several high voltage crossings. The project was delivered 6 months ahead of schedule and without lost time incident.

Start Date: May 2015
Completion Date: May 2017

 

 

If you would like to request information on this project or submit a request for bid, click here. 

 

CREZ 345kV Transmission Line Construction Projects

CREZ 345kV Transmission Line Construction Projects

CREZ 345kV Transmission Line Construction Projects

Type: Renewables, Transmission
Scope:
Constructed approximately 1000 miles of 345kV transmission line for a variety of renewable energy projects in Central Texas.
Location: Central Texas
Clients:
•  Electric Transmission Texas
•  Lower Colorado River Authority
•  Lone Star Transmission
•  Sharyland Utilities
•  South Texas Electric Cooperative

 

Competitive Renewable Energy Zones (“CREZ”) were introduced by the Texas State Legislature in 2005 to alleviate grid congestion and integrate renewable energy resources (primarily wind from rural west Texas) into more heavily populated metropolitan areas (e.g., Austin, Dallas-Fort Worth, San Antonio).

Approximately 2,400 miles of electric transmission line was ordered by the Public Utility Commission of Texas and awarded to 10 CREZ transmission service providers. Irby provided transmission construction services to 5 of those service providers, namely: Electric Transmission Texas, Lower Colorado River Authority, Lone Star Transmission, Sharyland Utilities, and South Texas Electric Cooperative over a 3 year period.

Employing various Quanta network contracting configurations (Irby is a Quanta Services company (PWR:NYSE)), Irby collectively built approximately 1,000 miles of line, the majority of which was 345 kV, with small portions of 138 kV throughout.

Start Date: October 2011
Completion Date: December 2014

 

 

If you would like to request information on this project or submit a request for bid, click here. 

 

Maine Power Reliability Program

Maine Power Reliability Program

Maine Power Reliability Program

Type: Renewables, Transmission
Scope: Constructed and upgraded 200 miles of 34.5kV, 115kV, and 345kV transmission lines in service of a large-scale hydropower project in Maine.
Location: Lewiston, Maine
Client: Central Maine Power

In service of growing power demands in Maine and New England, the Maine Power Reliability Project (“MPRP”) involved the construction and reconstruction of over 350 miles of transmission infrastructure. In December 2010, MPRP owner Central Maine Power (“CMP”) awarded Irby a contract to construct the MPRP’s Central Loop work scope.

The Central Loop consisted of 200 miles of installation, modification and/or removal of 345kV and 115kV electric transmission lines. Supported by a consortium of Quanta Services companies (Irby is a Quanta subsidiary PWR:NYSE)) and Cianbro Corporation, the work scope included the removal and reconstruction of lattice towers, several major river crossings, micro pile foundation installation (and helicopter support), fiber splicing and testing, blasting, and lead abatement. Completed in May 2015, the project met all contractual milestone, outage, and completion dates.

Click here to read Central Maine Power’s press release following completion of this project.

Start Date: December 2010
Completion Date: May 2015

 

If you would like to request information on this project or submit a request for bid, click here.