Transmission Services

PrimeLine unites leading construction and engineering companies specializing in the design, inspection, construction and maintenance of both overhead and underground transmission systems of any voltage and length through all terrain types. Our teams excel at delivering tailored solutions that meet the needs of utilities while fulfilling regulatory requirements. We are backed by one of the largest fleets of bucket trucks on the East Coast, ranging from 100 feet -170 feet. Powered by employee expertise, PrimeLine subsidiaries deliver safe and cost-effective solutions to meet the electric transmission industry’s evolving needs.

Overhead Transmission Line Construction and Maintenance Services
  • Construction and Maintenance on high voltage lines up to 765kV
    • Experience includes Multi-Bundle Conductors and a Full Range of Wire Types and Sizes
  • Total Rebuild and Line Relocation Services
  • Multi-Circuit Reconductoring
  • OPGW Installation
  • Switch Installation
  • Composite Pole Installation
  • Lattice Tower Inspections, Steel Fabrication and Replacement
  • Foundations (Mountains to Marshes)
    • Driving Caissons
    • Wet Pours
    • Down Hole Hammer
    • Rock Removal up to 8 foot diameter 
  • Environmental Matting
    • Composite and Wood
    • Road Building
    • E&S Controls
    • Complete Road and Right-of-Way Restoration
  • Services for every type of tower structure including:
    • Wood
    • Concrete
    • Steel
    • Lattice towers
    • Hybrids consisting of mono-poles and multi-poles
  • Electric Facility Inspection
  • Right-of-Way Clearing
Underground Transmission Line Construction and Maintenance Services
  • Underground Transmission Installation, Construction and Maintenance
    • High-pressure fluid filled (HPFF)
    • High-pressure gas filled (HPGF)
    • Pipe, cable and splicing from 69kV – 345kV
  • Cross-linked polyethylene (XLPE) installations of cable and conduits
  • Welded steel, fiber and plastic duct bank installations with heat dissipating capabilities (oil filled or concrete encased)
  • Survey and Inspection
Transmission Design and Engineering Services
  • Construction Cost Analysis and Services
  • Engineered Structures
  • Foundation Analysis
  • Line Analysis with Lidar
  • Line Modeling
  • Line Rebuilding
  • Line Route Analysis
  • Line Upgrades
  • NERC Analysis
  • Procurement Cost Analysis and Services
  • Structure Replacements
  • Construction Management
  • Design/Build Capacity
  • Highway Relocation Projects
  • Labor and Material Contract Preparation
  • Line Permitting
  • PLS-CADD Design Software
  • Project Management
  • Routing and Feasibility Studies
  • Transmission Planning Studies

Substation Services

Since the early 1950’s, PrimeLine subsidiaries have played an important role in the construction and maintenance of electric utility substations. All substation work is performed in-house and our teams are well known for delivering innovative design-build solutions. As the need for more secure and larger capacity substation infrastructure grows, we provide technology and services to ensure that our customers continue meeting the needs of their communities.

Substation Construction and Maintenance Services
  • Turnkey and Construction Services for voltages up to 500kV
  • Static Var Compensators
  • Testing, Calibration and Equipment Servicing
  • Complete Civil work, Fencing and Landscaping
  • Foundations
  • Structures
  • Equipment Installation
  • Control Houses
  • Wiring Protective Relay Schemes and Start-up
Substation/Relaying Engineering Services
  • Control House Design
  • Equipment Procurement
  • Complete Local, State and Federal Permitting Services
  • Erosion Control/Stormwater Design/SPCC
  • Foundation/Oil Containment Designs
  • Full Construction Management
  • Grounding
  • Resistivity Studies
  • Labor Contracts
  • Protective Relaying and Coordination
  • Relay Calibration/Testing
  • SCADA Systems/Automation
  • Site Selection and Structural Layout
  • Substation Design/Build Capability

Distribution Services

PrimeLine subsidiaries provide a depth of energized electric distribution experience in new and replacement installations that are unparalleled in the electric industry. We have an industry-leading reputation for safely delivering customized solutions to our customers. Our services include design, engineering, inspection, survey, construction and maintenance for all critical overhead and underground infrastructure.

Overhead Distribution Construction and Maintenance Services
  • Primary and secondary voltages range from 4kV – 35kV classes
  • Electric Facility Inspection
  • Construction
  • Maintenance
  • Restoration
  • Pole Replacement
  • Line Reconductoring
  • Smart Grid Component Installation
  • Stray Voltage Survey Assessment and Mitigation
Underground Distribution Services
  • Primary and secondary voltages range from 4kV – 35kV classes
  • Electric Facility Inspection
  • Manhole, Vault, Duct Bank Installation and Rebuild
  • Case Bores from 12-48 inch diameter up to 150 foot
  • Construction
  • Maintenance
  • Restoration
  • Open Cut and Directional Drilling Installations
  • Stray Voltage Survey Assessment and Mitigation
Overhead and Underground Distribution Engineering Services
  • Design/Build Capacity
  • Detailed Cost Estimating
  • Facility Condition Assessment and Privatization
  • Highway Relocation Projects
  • Labor Contract Preparation and Administration
  • Local, State and Federal Permitting
  • Line Inventory, Staking and Design
  • Preparation of Material Lists and Specifications
  • Right-of-Way Appraisal and Acquisition
  • Routing, Feasibility, and Planning Studies
  • Street, Area and Security Lighting
  • Surveys and Investigations
  • Transmission Underbuild Design

Emergency Restoration

Customers rely upon PrimeLine subsidiaries to be first responders after natural disasters or severe weather events. Our highly-dedicated teams are there for the duration, and are available 24/7, until power is safely restored. Our teams are ready to deploy nationwide with all necessary equipment and resources.

Emergency Restoration Services
  • 24/7 Response for Electric Distribution and Transmission Emergencies
  • Nationwide Deployment following hurricanes, wind or ice storms, tornados, floods and other natural disasters
  • Restore Right-of-Ways
  • Plumb or Rebuild Poles
  • Restore or Replace Lines
  • Reenergize Power Supplies
  • Pre and Post Storm Investigations and Surveys
  • Wire Guarding and other Critical Public Safety Services as needed
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