Electrical Transmission & Distribution Projects

115-kV to 12.5/7.2-kV Substation
Location: Washington
Client: Big Bend Electrical Cooperative

Provided substation feeder getaway designs and overhead and underground feeder rebuilds for Big Bend Electrical Cooperative.

115-kV Underground Transmission
Location: Puerto Rico
Client: Ray Engineers & Associates

Design of underground transmission system encircling San Juan, Puerto Rico.

138-kV Transmission Grid Improvements
Location: Fort Worth, Texas
Client: TXU Electric Delivery

Extended projects for TXU Electric Delivery in Texas, including new, rebuilt, reconductored and relocated 138- and 345-kV lines.

138-kV Transmission Lines
Location: Austin, Texas
Client: Lower Colorado River Authority

Design for several 138-kV transmission lines for the Lower Colorado River Authority in Texas.

15-kV Shielded Power Cables
Client: Koch Refining Company

The study, recommendations and design improvements for Koch's east refinery.

161-kV and 500-kV Transmission Line Thermal Analysis
Location: Chattanooga, Tenn.
Client: Tennessee Valley Authority

The modeling and analysis of approximately 1,000 miles of 161-kV and 500-kV transmission lines.

161-kV Underground Transmission Line
Location: Kansas City, Mo.
Client: Aquila Inc. (now Kansas City Power & Light)

Design-build services for Aquila’s 161-kV underground transmission line crossing a golf course and subdivision, the first XLPE solid dielectric cable installed in Aquila’s transmission system.

230-kV Substation Upgrades
Location: Richmond, Va.
Client: Dominion Energy

Joint venture design-build services for modifications to three substations to improveimprove reliability of Dominion Energy's 230-kV system.

3 Underground Transmission Projects
Location: Las Vegas
Client: Nevada Power Co.

Design for two and engineer-procure-construct specifications for a third underground transmission project for Nevada Power Co.

34.5-kV Cogeneration Plant
Location: Decatur, Ill.
Client: Archer Daniels Midland

This project consisted of a 34.5-kV substation at the cogeneration plant and six 34.5-kV distribution feeder circuits to five plant site substations and one investor-owned electric utility interconnection point.

345-kV Bosque Switch
Location: Bosque County, Texas
Client: Brazos Electric Power Cooperative

Provides an interconnection point for a new generating facility, including new 345-kV and 138-kV switchyards, modifications to an adjacent 345-kV transmission line and construction of a new 138-kV transmission line.

345-kV Plant Tie Circuit
Location: Pasadena, Texas
Client: CenterPoint Energy

Design-build services for a 345-kV plant tie circuit at the Lyondell-Citgo Refinery in Houston.

69-kV Downtown Substation
Location: Knoxville, Tenn.
Client: Knoxville Utilities Board

Design-build services for a hidden 66-kV substation in nine months, including the design, procurement, construction and landscaping, for the Knoxville Utilities Board.

99-MW Wind Energy Acquisition
Location: Minnesota
Client: Confidential

Siting and acquisition assistance for a confidential client for a 99-MW wind farm under development in Minnesota by a third party, including environmental and permitting reviews, windshield surveys, due diligence and GIS mapping.

AEP Substation Projects
Location: Various
Client: American Electric Power (AEP)

Engineering, procurement, construction, project management support, testing and commissioning related to more than 200 substation and transmission projects for American Electric Power.

Beach Boulevard Overhead to Underground Conversion Project
Location: Jacksonville, Fla.
Client: JEA

Design for the replacement of approximately 1.2 miles of 26.4 kV overhead conductor with underground conductor for JEA, Jacksonville, Fla.

Blue Canyon Wind Farm
Location: Comanche County, Okla.
Client: Horizon Wind Energy

Engineering design of the collection system, substation and transmission for the 100-MW Blue Canyon V Wind Farm in Comanche County, Okla., for Horizon Wind Energy.

Bridge-Supported High-Voltage Cables
Location: Cape Hatteras, N.C.
Client: Cape Hatteras Electric Membership Corp.

Installation of one of the longest bridge-supported high-voltage cables in North America.

Buffalo Ridge Incremental Generation Outlet and Transmission
Location: Minnesota
Client: Xcel Energy

EPC contractor for Xcel Energy on Buffalo Ridge incremental generation outlet and 23 miles of 115-kV transmission line design, procurement and construction in Minnesota.

Central Power Loop
Location: Nashville, Tenn.
Client: Nashville Electric Service

Transmission line design and substation site development for about 10 miles of new 69- and 161-kV transmission line as part of the Central Power Loop around downtown Nashville, Tenn.

Comprehensive System Study
Location: Santa Ana, Calif.
Client: Orange County Sanitation District

Comprehensive system study for two wastewater treatment plants in Orange County, Calif. Included development of a database for maintaining equipment ratings and maintenance information.

Construction & Design of Overhead Transmission Lines
Location: Belize
Client: Belize Electric Co. Ltd.

Conceptual and detailed design engineering and construction services for overhead transmission lines in Belize, including structure design, foundation design, conductor sag-tension design, insulation design, guy and anchor design and structure spotting.

Crissinger-Tangy 138-kV Underground Transmission
Location: Delaware, Ohio
Client: Delaware, Ohio, Airport

Joint venture project management, engineering, material procurement, construction and testing of the Crissinger-Tangy 138-kV transmission line underground relocation for the Delaware, Ohio, Airport.

Delaware Mountain Collector Line
Location: Guadalupe Mountains National Park, Texas
Client: National Wind Power

A 9-mile, 34.5-kV vertical collector line for 40 wind turbines through difficult terraine in Guadalupe Mountains National Park in Texas for National Wind Power.

Design & Construction of 69-kV Substation
Location: Hawaii
Client: Hamakua Cogen Facility

New, four position, breaker-and-a-half, 69-kV substation and two new wood and steel pole, 69-kV transmission lines with OPGW that intercepted an existing Hawaii Electric Light Company (HELCO) transmission line.