Electric Transmission and Substations

As the electric system gets pushed to its limit to deliver more power, our clients seek creative solutions to optimize their assets and better provide for their customers. CHA's experts have decades of experience planning, designing, and permitting electrical power delivery infrastructure, including overhead and underground transmission lines and substations. We've designed hundreds of transmission, distribution, and customer-owned substations and switching stations (15 kV up to 300 MVA transmission stations). We've also designed mobile transformers and substations up to 25 MVA and 161 kV. Every substation is designed to meet your particular electrical and environmental requirements.

Our electric transmission and substation services include:
  • Conceptual and Preliminary Design
    • Engineering Studies
    • Cost Estimates
  • Construction Inspection
  • Detailed Design
    • PLS-CADD™ Modeling and Design
  • Electrical and System Studies
  • Electrical Engineering and Design
    • Line Ratings
    • Clearances
    • Grounding
    • Underground Cable Design
  • Electrical Equipment Specifications
  • Foundation Engineering and Design
    • Direct Embed and Concrete Foundations
  • Line Routing
    • Varied Terrain Conditions (Underwater, etc.)
    • Line Upgrade and Retrofit Design
      • Reconductoring Circuits
      • Voltage Rerating
      • OPGW Installation
    • Owner's Engineer Services
    • Onsite Program Management
    • Onsite Project Management
    • Protection, Control, and SCADA Design
    • Right–of–Way Acquisition and Land Services
    • Siting, Licensing, and Permitting
    • Structural Engineering and Analysis
      • Wood and Steel Poles
      • Lattice Towers
      • Framed Structures
    • Station Upgrade and Retrofit Design
      • Equipment Upgrades
      • Station Expansion
      We provide solutions for:
      • Utilities – Investor Owned and Municipal
      • Power Generators
      • Construction Contractors
      • Developers – Renewable Energy and Industrial
      • Universities and Colleges