Type: Distribution Scope: Constructed 6.6 miles of 13.8kV distribution line. Location: Madison, Mississippi Client: Entergy Mississippi
In support of future energy demand near Madison and Hinds counties, Entergy Mississippi (450,000+ customers in 45 counties) contracted Irby in May of 2017 to deliver 3 additional circuit routes to the Bozeman Road 230kV radial substation. To avoid outages, the work was performed while energized, with circuit routes totaling 6.6 miles of 13.8kV distribution line.
The work was completed to schedule and with zero lost time incidents using Irby’s conduit, HDPE, and pad-mounted underground equipment. Irby’s directional boring solution was ideally situated for the Entergy scope allowing for minimal excavation and minimal impact to the surrounding site.
Start Date: May 2017 Completion Date: October 2017
Port St. Joe-Callaway 230kV Transmission Line Upgrade Project
Type: Transmission Scope: Performed the removal and rebuild of 34 miles of 230kV transmission line in the aftermath of Hurricane Michael. Location: Port St. Joe, Florida Client: Duke Energy
Duke Energy is one of the largest electric power holding companies in the United States, providing electricity to 7.7 million retail customers in six states. In December 2018, Duke Energy contracted Irby to perform the removal and reconstruction of 34 miles of 230kV transmission line from Port St. Joe to Callaway in the aftermath of Hurricane Michael.
Type: Substation Scope: Performed the demolition and reconstruction of a 138kV substation. Location: Oolagah, Oklahoma Client: American Electric Power Oklahoma Transmission Company
American Electric Power Oklahoma Transmission Company (“AEPOT”) (a subsidiary of American Electric Power), contracted Irby in November 2017 to demolish and reconstruct the 22 breaker 138kV Northeastern substation near Oolagah, Oklahoma. The project scope included the installation of two new 138kV bays, the transfer of existing lines, and demolition of the existing substation to phased AEPOT outage cadence. The Northeastern substation provides essential power to the Tulsa metropolitan area and all outages were executed to AEPOT schedule and with zero lost-time incidents.
Start Date: November 2017 Completion Date: November 2019
Type: Substation Scope: Constructed a 3000A capacity substation including installation of 138kV electrical bus work. Location: Austin, Texas Client: Lower Colorado River Authority
The Lower Colorado River Authority (“LCRA”) is a non-profit public utility providing water stewardship and energy to more than 70 counties throughout Texas. In July 2018, LCRA contracted Irby to upgrade the capacity of its 138kV Colton Lane Electrical Substation in southeast Travis County, Texas.
Constructed to serve the anticipated load growth of the Bluebonnet Electric Cooperative (Owners of 11,000+ miles of power lines across 14 counties), the Colton Lane substation was successfully upgraded by Irby to its newly rated 3000A capacity within a condensed LCRA schedule and with zero lost time incidents in September 2018.
Start Date: July 2018 Completion Date: September 2018