Patterson – S. Nashville 138kV Transmission  Line Rebuild Project

Patterson – S. Nashville 138kV Transmission  Line Rebuild Project

Patterson – S. Nashville 138kV Transmission
Line Rebuild Project

Type: Transmission
Scope: 138kV Rebuild
Location: Southwest Arkansas
Client: AEP Southwestern and Electric Power Company

Southwestern Electric Power Co. (SWEPCO), an American Electric Power company, serves more than 543,000 customers in Northwest and Central Louisiana, Northeast Texas and the Texas Panhandle, and Western Arkansas. In October 2021, Irby Construction began a 25-mile rebuild of the Patterson to S. Nashville 138kV transmission line for SWEPCO. 

Located in the southwest corner of Arkansas, the project includes more than 240 structures that meander through marshy territory on Arkansas Heritage Commission property, U.S. Army Corp of Engineers land, and numerous wetland areas. 

This 138kV single circuit transmission project consists of three eight-mile sections and has planned outages so the Irby crew can perform pole work on de-energized lines. The first section is 8.8 miles long and consists of 79 structures. The second section is 8.3 miles with the replacement of 83 structures, and the final section is roughly 8.1 miles with 80 structures. The final line is scheduled to be in-service on November 30, 2023. 

To assist with overall access of the area, Irby has contracted with affiliate company MG Dyess to clear obstacles and tackle the challenging wetland conditions. For the more than 30 Irby crew members who are wrecking out and rebuilding the existing transmission line, MG Dyess is laying thousands of wood mats to access work areas. 

NorthStar Energy Services, another affiliate company, is providing support services by drilling and pouring foundations as well as drilling and setting bases for the direct embed structures. 

From creating entry and overcoming barriers to setting foundations and poles, these coordinated efforts allow Irby to work efficiently and effectively. Irby is exceeding expectations on this job and is committed to the absolute performance required to safely deliver this project on time and within budget. 

Start Date: October 2021
Scheduled Completion: In Progress

 

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

 

Entergy Harahan-Avondale

Entergy Harahan-Avondale

ENTERGY HARAHAN-AVONDALE 230kV RIVER CROSSING TRANSMISSION LINE

Type: Transmission
Scope: Water Crossing, Emergency Restoration
Location: New Orleans, Louisiana
Client: Entergy New Orleans

Entergy New Orleans provides electricity to more than 209,000 customers in Orleans Parish, Louisiana. On Sunday, August 29, 2021, Hurricane Ida made landfall as a Category 4 hurricane with sustained winds of 150 mph. The New Orleans area suffered damage causing outages for approximately 895,000 customers.

As a result of Hurricane Ida, a 475-foot lattice transmission tower in Avondale, a suburb on the west bank of the Mississippi River, was damaged and fell with conductor lines landing in the river. The tower on the Harahan side of the river remained intact with the conductor lines attached. This was a primary circuit for New Orleans and power was rerouted to restore electricity for customers until the damage could be repaired.

Entergy New Orleans contracted with Irby to manage the project from beginning to end. The removal of the destroyed transmission tower’s lines in the Mississippi River was a national priority. Efforts included coordinating with the Army Corps of Engineers, U.S. Coast Guard, Levee District, Louisiana State Police, Jefferson Parish EOC, the Governor’s Office of Homeland Security and other agencies to ensure safety and minimize risks.   

To safely remove the wire from the tower, clearing the downed conductor lines was completed by Dem-Tech through a series of controlled detonations. Explosives were attached to the conductor lines on both sides of the tower and demoed in sections. 

Once the lines and old towers were cleared away, Boh Bros. Construction Co., LLC, completed pile driving work and Irby sister company Legend Foundation Services installed anchor bolted piers to resist uplift forces that might otherwise cause the new tower and lines to be extracted from the ground.

With foundations in place, Irby, TNT Crane, and A&J Steel erected two 475-foot PyraMAX towers to supersede the old ones. With only 6 hours a day permitted by authorities to shut down major river traffic, Irby has begun stringing the lines using barges across the 3,700-foot span of the Mississippi. Once that is complete, energizing the lines is the last step in bringing this major transmission system back to life.

Irby is proud to have been recognized by our client, Entergy, for our work on this project a Premier Vendor for Customer Centricity. For more details and background on this project watch the Premier Vendor Award video

 

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

 

FPL EVolution HUB

FPL EVolution HUB

FPL EVolution HUB

Type: Substation and Renewable
Scope: Construct a Microgrid Grid
(Solar Farm, BESS, and EV Charging Stations)
Location: Riviera Beach, Florida
Client: Florida Power & Light

Irby was awarded the construction of the Florida Power and Light (FPL) EVolution Hub project in August 2021. This innovative microgrid (energy storage project) comprises a 5-MW solar array and a 7.5-MW by 15-MWh stationary battery, as well as two mobile EV trailers. The two, 28-foot mobile EV charging stations, built by our affiliate company Brink Construction, will be able to provide clean energy on the go. The mobile EV trailers will each carry a fully charged battery. The EV chargers will be stationed at FPL’s West Palm Beach service facility, where EV fleet drivers can charge their vehicles. EV charging trailers will help during public emergencies or in evacuation situations, such as hurricanes.

The project will enable FPL to test the design and benefits of movable EV charging stations and gain further insight into microgrid technology.

Irby’s full scope of construction includes site civil and access work, complete solar farm installation incorporating foundations, modules, racking, collection systems, conduit installation, and commissioning of all components of the microgrid. Working with FPL Construction managers, Irby will complete this project by mid-year 2022.

Start Date: August 2021
Scheduled Completion: March 2022

 

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

 

New England Clean Energy Connect Transmission Line

New England Clean Energy Connect Transmission Line

New England Clean Energy Connect Transmission Line

Type: Transmission
Scope: 145 miles of 320kV HVDC T/L – steel poles
Location: Maine
Client: Avangrid

The New England Clean Energy Connect (NECEC) is the largest clean energy project in New England. The Clean Energy Corridor connects 1,200 megawatts of renewable hydropower from Canada to the New England power grid.

In total, the project consists of 145 miles of new transmission line that will tie into the existing transmission system in Lewiston, ME. Additional project components include upgrading 50 miles of existing alternating current transmission lines, construction of a new converter station, a new substation, and multiple system upgrades.

When the New England Clean Energy Connect (NECEC) project was announced, Irby and Cianbro teamed up to pursue their part in the $950 million that will bring clean energy to 1.2 million households. Leveraging their previous success for Central Maine Power, and staying committed to the win, the Cianbro-Irby joint venture worked for three years on pricing and negotiations. In April 2020, the Cianbro-Irby team was awarded a 145-mile transmission line project from Avangrid. Cianbro-Irby’s scope of work includes all aspects of the DC line construction including foundations, pole setting, framing, and wire stringing operations.

Start Date: December 2020
Scheduled Completion: TBD

 

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

 

Sunshine Gateway Battery Energy Storage Center

Sunshine Gateway Battery Energy Storage Center

Sunshine Gateway Energy Storage Center

Type: Substation, Renewable
Scope: Construct a new battery energy storage center
Location: Columbia County, Florida
Client: Florida Power & Light

Irby was awarded the construction of the Florida Light & Power (FPL) Sunshine Gateway Battery Energy Storage Center (BESS) in August of 2020. The 30MW battery storage facility consists of 10 new battery line-ups (battery containers and integrated inverter/pad-mount transformer skids) connected to an adjacent 230/34.5 kV substation. The work includes, but is not limited to, the installation of all civil works, including the BESS pad, drainage infrastructure, roads, foundations, conduits, grounding, structures, equipment, batteries, and battery enclosures, control building, cabling, and testing.

The battery storage system is fed by the FPL Sunshine Gateway Solar Energy Center, a 74.5 MW facility sitting on over 900 acres located near the intersection of I-10 and I-75. The solar plant generates zero-emissions for FPL customers and generates enough renewable energy to power approximately 15,000 Florida homes. Operation of this renewable source is the equivalent of removing 12,000 cars from the road each year.

Local ABC affiliate, 20 WCJB ran a softy on the project. Watch it here. https://www.wcjb.com/content/news/FPL-opens-new-solar-energy-power-plant-in-Columbia-County-506341811.html

Start Date: March 2021
Completion Date: In Progress/Scheduled December 2021

 

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