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Transmission Line Design & Power Distribution

End to End Reliability

Overhead, Underground, or Anywhere in Between. We Have You Covered.

Spanning across all industries, increased power requirements are driving demand for transmission line designs that traverse greater distances and meet tighter schedules. Utilities need to account for extreme weather events that strain the power grid and renewable providers need to meet cost and timeline restraints. NEI navigates design challenges to provide best-in-class transmission solutions to keep the lights on and the industry moving forward. We understand the details without missing the big picture.

The team at NEI recognizes every situation requires a unique solution. Projects can be technically challenging due to complexity, topography, or congestion, and require significant variation in structure type and configuration. Other projects have schedule constraints due to ambitious energization dates, driving accelerated procurement for long lead time items and requiring creative staggering of design submittals. Landowners can be difficult to appease, resulting in alignment and structure adjustments post-procurement. Construction issues emerge due to unforeseen circumstances including soil conditions or underground utility conflicts. Our engineers excel in these situations. NEI focuses on problems that matter the most and customizes the end solution to the unique needs and constraints of each project.




Overhead Transmission Line Design

  • Line Modeling Using PLS-CADD
  • FE Line Modeling
  • PLS-CADD Optimum Spotting Tool
  • Advanced Structural Analysis and Optimization
  • Using LiDAR to Analyze and Model Existing Lines
  • Importing LiDAR to Evaluate Clearances
  • Upgrading Analysis and Design
  • Conductor Selection
  • Line Reconductoring Using ACSS or ACCC
  • Line Reliability and Condition Assessment
  • Standards Development
  • Fiber Optic Additions
  • Loading Criteria Studies
  • Siting and Routing Selection
  • Root Cause Failure Analysis and Forensic Investigation
  • Environmental Impact Statements
  • Right of Way Services
  • Electrical System Studies
  • Reliability-Centered Maintenance Programs

Underground Transmission Line Design

  • Environmental Impact Statements
  • Evaluation of Cable System Types
  • Alternative Routing Identification and Analysis
  • Sizing of Cable and Conduit
  • Cable Pulling Calculations
  • Location and Design of Vaults
  • Ampacity and Loss Calculations
  • Heat Dissipation Considerations

Additional Services & Software

  • Fire Mitigation
  • RFP Development
  • Corrosion Studies
  • Expert Witness Testimony
  • Distribution Design & PLS-CADD Modeling
  • FE Analysis
  • PLS-CADD Optimum Spotting Tool
  • MFAD
  • L-Pile
  • Forensic Analysis
  • Root Cause Failure Analysis

Featured Tech Paper

Developing Design Wind Speeds for Transmission and Distribution Lines in Belize and Accounting for Climate Change

This report develops an evidence-based strength and loading standard for the country of Belize to use with future power line infrastructure

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