Public engineering firm directory

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Ampirical

Partnering with you to deliver innovative, reliable energy solutions that enhance lives and strengthen the grid.

Website3 projects1 credentialsSize Estimate: 250-500 employeesUpdated Jun 2026

Project: 230kV Transmission Line EPC

Service: Substation EngineeringService: Full physical, civil, structural, and P&C designService: Grounding, shielding, and lightning protectionIndustry: Electric UtilitiesIndustry: Power GenerationType: Automation & Controls+58 more

Custom Engineering Solutions

Alpharetta, GA

An electrical, civil, and structural engineering corporation offering comprehensive utility and power services.

WebsitePhone2 offices3 leaders6 credentialsUpdated Jun 2026

Service detail: Substation Design and Relaying

Service: Substation Design and RelayingService: Physical Substation LayoutService: Protection and Control Panel DesignIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Civil Engineering+39 more

EDM International, Inc.

Fort Collins, CO

Reliability & Innovation Since 1982

Website4 officesFounded 1982Updated Jun 2026

Service detail: Engineering and Design

Service: Engineering and DesignService: Power Delivery Design & EngineeringService: Custom-Engineered Structures & FoundationsIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Power & Utility Engineering+38 more

LineWorks Engineering, LLC

Atlanta, GA

A Trusted Connection

WebsitePhone3 officesUpdated Jun 2026

Service detail: Transmission Line Design

Service: Transmission Line DesignService: New Transmission Line ConstructionService: Transmission Line Rebuilds and UpgradesIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+25 more

PGA Engineers Inc.

Brea, CA

We Provide the Plans and Preparations to Build a Sustainable Future for Our Cities and Communities

WebsitePhone1 officeSize Estimate: 1-9 employeesUpdated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Substation and Utility Site DevelopmentService: Grading and Drainage PlansIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Civil Engineering+21 more

RDQ, Inc.

Denver, CO

Transmission & Distribution Lines, Delivered

WebsitePhone2 offices3 leaders1 publicationsFounded 2018Size Estimate: 10-30 employees

Service detail: Transmission Line Engineering

Service: Transmission Line EngineeringService: Structure and Foundation DesignService: Route Selection and Greenfield DesignIndustry: Power Transmission & DistributionIndustry: Electric UtilitiesType: Power & Utility Engineering+21 more

TransDesign International, LLC

Montgomery, TX

TransDesign International, LLC is a consulting engineering practice serving the power transmission industry with experience in overhead transmission line design and lattice tower development. It provides services from preliminary studies and 3D modeling to full-scale tower testing and steel supply management, supporting utilities through every phase of transmission infrastructure development.

Website2 officesFounded 1983Updated Jun 2026

Service detail: Overhead Transmission Line Design

Service: Overhead Transmission Line DesignService: Preliminary Line Routing StudiesService: Three-Dimensional PLS-CADD ModelingIndustry: Power Transmission & DistributionIndustry: Electric UtilitiesType: Structural Engineering+35 more

engNovex, Inc.

Dover, DE

Innovative Solutions to Challenging Structural Engineering Problems

WebsitePhone2 officesUpdated Jun 2026

Service detail: Structural Engineering for Power & Industrial Facilities

Service: Structural Engineering for Power & Industrial FacilitiesService: Structural Steel DesignService: Reinforced Concrete DesignIndustry: Power GenerationIndustry: NuclearType: Structural Engineering+33 more