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 (15kV up to 300 MVA transmission stations). We’ve also designed mobile transformers and substations up to 25 MVA and 161kV. Every substation is designed to meet your particular electrical and environmental requirements.

Our electric transmission and substation services include:
  • Cable Curing
  • Conceptual and Preliminary Design
    • Engineering Studies
    • Cost Estimates
    • Scope Document Development
  • Construction Inspection
  • Detailed Design
    • PLS-CADD™ Modeling and Design
    • Civil, Structural, and Electrical 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 Assessment, Upgrade and Retrofit Design
    • Reconductoring Circuits
    • Voltage Rerating
    • OPGW Installation
  • 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
  • Underground Cable Design
    • Cut and Fill
    • HDD
    • Jack and Bore
  • Voltage Flicker Analysis
Additional Services:
  • Owner's Engineer Services
  • Onsite Program Management
  • Onsite Project Management
  • Construction Inspection
We provide solutions for:
  • Utilities – Investor Owned and Municipal
  • Power Generators
  • Construction Contractors
  • Developers – Renewable Energy and Industrial
  • Universities and Colleges