(a parent company of ) is a wholesale electricity supplier with a portfolio of facilities totaling more than 21,000MW of electric generating capacity in the United States and Canada. In January 2018, NextEra contracted Irby to construct 68.3 miles of 500kV transmission line (single circuit, triple bundled) between Palm Beach and Miami-Dade counties (Corbett and Sugar substations to Quarry substation) in support of a critical tie-in for the NextEra’s Florida grid.

The Irby scope includes site survey, clearing, construction of access roads and pads, pier foundations and anchor pile installation, and setting steel structure and deadends with approximately 15 miles of the construction right of way transversing protected Everglade canal waterways.

In observance of the projects environmental requirements Irby crews adapted novel technical solutions including the use of barges, concrete pump lines, and amphibious equipment.

Start Date: January 2018
Completion Date: May 2019

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In March 2016, Irby 51ÂÒÂ×»»ÆÞ was contracted by the (“LCRA”) to perform the Marshall Ford to Lago Vista 138kV Transmission Line 51ÂÒÂ×»»ÆÞ Project. The project scope included the replacement of a 1.3 mile transmission line across Lake Travis plus the upgrade of an existing 14.5 mile transmission line (69kV to 138kV).

Irby 51ÂÒÂ×»»ÆÞ successfully completed this project in April of 2016 to schedule and budget.

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Start Date: March 2016
Completion Date: April 2016

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The Eastern Alberta Transmission Line is a 300 mile 500kV overhead transmission line interconnecting the Newell HVDC static inverter plant near Brooks, Alberta with the Heathfield static inverter plant near Gibbons, Alberta.

Owned by , a subsidiary of (“ATCO”), the ~$1.3B project further strengthens ATCO’s capability to transmit and distribute electricity to its 227,000+ customers in north and east-central Alberta, the Yukon, and the North West Territories.

Subcontracted via affiliate (Irby and Valard are both Quanta Services subsidiaries (PWR:NYSE)), Irby performed 100 miles of stringing through two sub-zero Canadian winter seasons to energize the project on time and to budget in December 2015.

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Start date: August 2013
Completion date:ÌýFebruary 2015

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(“Sharyland”) is a Texas-based electric transmission utility providing wholesale energy within the Texas Interconnection (~24 million customers) as regulated by the . In April 2016, Sharyland contracted Irby to rebuild 20.2 miles of 138kV transmission line near Martin County, West Texas.

As subcontractor to (Sharyland’s nominated engineering firm), Irby’s scope included the tear-down and reconstruction of the existing 138kV transmission line, including concrete and steel poles, between Grady and Brown Substations. Five OPGW splice cans were installed along the route and construction also included four highway crossings.

The project was completed on time, to schedule, and with zero lost-time incidents in October 2016.

Start Date: April 2016
Completion Date: October 2016

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(an Entergy Corporation subsidiary) provides power to over 450,000 customers in 27 Texas counties. In September 2015, Entergy contracted Irby affiliate company (Irby and Dashiell are subsidiary companies (PWR:NYSE)) to construct 40 miles of 230kV transmission line including steel and concrete poles between Entergy’s Ponderosa and Grimes substations in southeast Texas.

Irby 51ÂÒÂ×»»ÆÞ contracted Auger Services to construct the foundations and (also a Quanta Services subsidiary company) to pull lead line and help clip the shield wire via helicopter.

This project was successfully completed in April 2016.

Start Date: September 2015
Completion Date: April 2016

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(an Entergy Corporation subsidiary) is a power provider serving over 1 million customers across 58 parishes in Louisiana. In October 2016, Entergy contracted (a Quanta Services company (PWR:NYSE)) to reconstruct 15 miles of 230kV and 6.8 miles of 500kV transmission line near Lake Charles on a turn-key basis.

Irby (also a Quanta Services company) was subcontracted to Dashiell to rebuild the lines, including foundations, steel, and concrete poles. Irby was assisted by for pole setting/foundations and for helicopter wire operations. Irby also performed conductor stringing works (1 mile) across the Calcasieu River. The project was completed in February 2018 to schedule and without lost-time incident.

Start Date: October 2016
Completion Date: February 2018

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In April 2016, Irby 51ÂÒÂ×»»ÆÞ was awarded the contract for the construction of the Valliant to Northwest Texarkana Transmission Line project for and .

The project consisted of the installation of 43.5 miles of 345kV single steel pole transmission line on anchor-bolted foundations. Irby was supported by and for helicopter pole erection work scopes (Irby and Winco are subsidiary companies (PWR:NYSE)). The project was completed on time and with zero lost time incidents in January 2017.

Start Date: April 2016
Completion Date: January 2017

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Founded in 2008, (“CTT”) is a regulated transmission service provider providing energy to wholesale markets across Texas. The bulk of CTT’s capacity derives from its owned and operated network of transmission lines (>320 miles) which delivers wind power from the Texas Panhandle to its customers.

In January 2016, CTT contracted Irby to incorporate power from the Salt Fork Wind project in Gray and Donley Counties by constructing 25 miles of 345kV transmission line. The Irby work scope included the installation of steel structures, foundations, and wire operations. Irby was assisted by (direct embed drilling and structure setting), (lead-in installation and diverters), and B&M Telecom (Fiber splicing). Both Irby and Winco Powerline are subsidiary companies (PWR:NYSE).

The project was completed in August 2016 to schedule and with zero lost-time incidents.

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Start Date: January 2016
Completion Date: August 2016

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In 2013, (“GTC”) contracted Irby to construct a 12.2 mile 115kv transmission line south of Savannah, Georgia including a 4 mile section through a protected salt marsh.

In service of the Coastal Electric Cooperatives service area, the project connected two radial transmission systems (Burnt Church and Tradeport) in Bryan and Liberty counties. In observance of the projects environmental sensitivity, Irby adapted a construction solution whereby poles were set by an helicopter to minimize the impact to marshland ecosystems.

Completed on time and within strict environmental parameters, the project exemplified Irby’s capability to plan and execute novel technical solutions to the highest standards of environmental best practice.

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Start Date: April 2013
Completion Date: December 2013

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a subsidiary of , is an electric utility which serves over 500,000 individuals throughout Virginia and Kentucky. Between August and December 2008, Kentucky Utilities contracted Irby to perform a 2.42 mile 345kV double circuit line crossing of the Ohio River.

The work scope included structure and wire installation work scopes including two 420 foot lattice towers for the river crossing. With foundation support from (Irby and Can-Fer are subsidiary companies PWR:NYSE)), the project was completed, on-time, to budget, and without lost time incident.

Start Date: August 2008
Completion Date: December 2008

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