Underground Construction

Wilson’s underground transmission team tackles unique project needs, from solid dielectric to high pressure fluid-filled cables, and has some of the most experienced personnel in the United States. Our specially fabricated cable-pulling equipment has helped install cable through 345kV from coast to coast, reliably.

American Electric Power

Gila-Citgo 138kV Underground Transmission Line
The Gila – Citgo project involved installing two 138kV transmission lines and removing two failing high-pressure oil filled (HPOF) circuits. Wilson’s underground transmission group tackled this engineering, procurement, and construction…

Dominion Energy

Gainesville - Haymarket 230kV Underground Transmission Line
In December 2019, Wilson’s underground division was awarded construction of 3.1 miles of 230kV double circuit duct bank in Virginia by Dominion Energy.

Portland General Electric

Marquam - Harrison 115kV UG Project, OR
Wilson installed eight circuits of 115kV underground transmission line, including a one-mile long circuit, in the waterfront district of Portland, Oregon. Work included pulling seven circuits into a GIS basement…

BC Hydro and Power Authority

Home Payne Substation to Cathedral Square – BC Hydro 230kV SCFF Transmission Line, Canada
Wilson installed nearly six miles of underground 230kV PPLP cable. For this project, BC Hydro elected to contract directly with the cable manufacturer for both supply and installation of the…