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T&D, Substation & Pipeline Construction & Maintenance

Transmission, Distribution & Substation Services

United Utility has extensive experience supporting new and existing power transmission systems from 4kV to 345kV and installation of up to 500kV substation apparatus installation, services and repair. We offer construction and oversight, turnkey work for EPC projects, engineering capabilities and we are uniquely qualified to perform specialty services including barehand and live line work up to 230kV.

Our highly skilled union and non-union crews are led with rigorous project oversight, and designers work closely with construction crews to ensure first time quality, cost effectiveness and high productivity. We operate a modern fleet of vehicles and equipment, with a strong safety culture and a focus on accountability to keep your project on schedule and on budget.

Transmission Construction and Maintenance Capabilities

  • Construction & oversight from 69kV to 345kV
  • Structure installation and replacement – wood, steel, concrete, lattice
  • Energizing and testing
  • Live line/barehand work up to 230kV
  • Hot stick energized work
  • Voltage conversions

Distribution Construction and Maintenance Capabilities

  • Equipment inspection & upkeep, repair and replacement
  • Overhead & underground line maintenance and wire stringing
  • Conductor upgrades
  • Voltage conversions
  • Structure installation and replacement – wood, steel, concrete, lattice
  • Streetlight installation / LED retrofit
  • OPGW fiber optic installation

Substation Construction Capabilities

United Utility has unparalleled expertise in substation and transformer apparatus installation and all construction related activities such as site-work, ground grids, foundations, and welding, our specialized training gives us the ability to optimize the performance and reliability of your equipment.

  • Installation up to 500 kV greenfield and brownfield substations
  • GIS & HVDC substation construction
  • SVC & FACTS system construction
  • Ground grids
  • Foundations and site work
  • Steel erection
  • Welding
  • Substation maintenance, testing and Commissioning
  • Fencing, control house install
  • Bus work installation
  • Power & Control cable installation
  • Large Transformer/Equipment Moves and Logistics
  • Above/Below Grade Raceway and Grounding
  • Power Plant Connections
  • Transmission Line Connections & Construction
  • Material Ordering, Tracking & Expediting

Underground Horizontal Directional Drilling and Pipeline Construction

DBE Utility Services/United Utility Energy is a specialty trenchless construction expert working with clients to engineer and install electrical, communications, water and sewer lines with over 500 completed projects in 18 years. Utilizing the latest technology and equipment, our 15 drill rigs with pull-back capacity up to 1.1M lbs, skilled operators and cross-trained crews are able to provide rapid response and mobilization. Our design/build expertise brings you unique, out-of-the-box thinking to plan and deliver complex projects.

Horizontal Directional Drilling (HDD)

  • Pipe diameters up to 63” and reamed bore holes in excess of 72″
  • Single shots capability up to 7,500 linear feet
  • Installation depths over 100 feet
  • 90,000 lbs of rotary torque
  • Underground & subaqueous drilling
  • Drilling experience with all material types

Pipeline Construction

  • Potable, reclaimed and sanitary force water main construction, lift/pump stations, gravity sewer mains
  • HDPE, Fusible PVC, DIP, Steel pipe materials


  • Pre-bore profiling and bore design
  • Adept at complex bores with horizontal curves in the alignment, as well as compound turns that change direction
  • Environmentally compliant
  • Detailed Frac-out Response plan based on unique site conditions

Energized Transmission Maintenance and Construction

Barehand and Live Line Crews

From energized 69kV wood pole lines to 500kV tubular steel, steel, concrete, and lattice tower transmission lines, our high voltage power live line expertise is respected throughout the country. Our teams operate under adverse conditions and extreme terrains, utilizing helicopters, barges, and other specialized equipment where access is restricted.

We perform all types of energized electric power infrastructure construction operations including structures replacement, switch replacement, re-conductor installation: stringing, sagging, clipping, dead-ending, reconductoring, fiber optic (OPGW), and splicing.