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.

Electric transmission and substation services:
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

Electric transmission and substation services:

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

Featured Electric Transmission and Substations Projects:

UMass Memorial Hospital CHP Power Plant

Lake Superior Power - 110 MW CCGT Power Plant

UR New South Substation and Phase I Distribution System

South Substation and Phase I Distribution

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