Public engineering firm directory

Find engineering consulting firms by capability and location.

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A2Z Engineering, PLLC

Kalispell, MT

Civil and Structural Engineers Montana

WebsitePhone1 office2 projects1 leadersFounded 1986Updated Jun 2026

Project: Flathead Lake Engineered Septic System

Service: PowerService: Substation DesignService: Transmission Line DesignIndustry: Electric UtilitiesIndustry: Land DevelopmentType: Civil Engineering+19 more

AED Energy Services

Wyomissing, PA

Designing America's Energy Lifelines

WebsitePhone4 offices9 leaders4 credentialsFounded 1989Updated Jun 2026

Service detail: Chemical and Process Design

Service: Chemical and Process DesignService: Documentation and AnalysisService: Specialized CalculationsIndustry: Oil & GasIndustry: PetrochemicalType: Chemical Engineering+64 more

ANS

Scotch Plains, NJ

Engineering with integrity & purpose.

WebsitePhone1 office7 projects12 leadersSize Estimate: 100-300 employeesUpdated Jun 2026

Project: The Virginia Vanguard

Service: Civil, Site & Land DevelopmentService: Site Development & PermittingService: Regulatory Coordination & RepresentationIndustry: Renewable EnergyIndustry: SolarType: Civil Engineering+57 more

ARUSI, LLC

Phoenix, AZ

Powering Your Vision With 35 Years of Experience

WebsitePhone1 office2 projects1 leadersFounded 1987Updated Jun 2026

Project: Sky Harbor International Airport Utility Services

Service: Utility Engineering, Coordination & ConsultingService: System StudiesService: Utility CoordinationIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+21 more

Advanced Geotechnical Engineering LLC

Pearl City, HI

Building Our World on Solid Foundations

WebsitePhone1 office5 projects1 leadersUpdated Jun 2026

Project: Honolulu Rapid Transit Project

Service: Soil InvestigationService: Subsurface InvestigationService: Soil and Groundwater SamplingIndustry: CommercialIndustry: ResidentialType: Geotechnical Engineering+28 more

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

Anderson Arellano Engineering, PLLC

Engineering Solutions Across Industries, Built on Precision

WebsiteSize Estimate: 1-25 employeesUpdated Jun 2026

Service detail: Foundation Mapping

Service: Foundation MappingService: Reinforcing steel details mappingService: Concrete compressive strength determinationIndustry: Power GenerationIndustry: Power Transmission & DistributionType: Structural Engineering+33 more

Asplundh Engineering Services, LLC

Horsham, PA

The name you trust for power generation, transmission and distribution infrastructure engineering services

Website1 office4 projectsUpdated Jun 2026

Project: Eversource Utilities Distribution Services

Service: Distribution EngineeringService: Greenfield Distribution DesignService: System Investigation and NESC ComplianceIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Power & Utility Engineering+30 more

BSI Engineering & Surveying, Inc.

Eufaula, AL

Engineering, surveying, and environmental services across the southeast

WebsitePhone3 offices9 projects5 leadersFounded 1994Updated Jun 2026

Project: North Railroad Drainage Study

Service: PlanningService: Site Selection & AnalysisService: Site Assessment ReportsIndustry: ResidentialIndustry: Multifamily ResidentialType: Civil Engineering+36 more

CDG Engineers, Inc.

St. Louis, MO

Engineering a better way.

WebsitePhone4 offices2 projects1 leadersFounded 1992Size Estimate: 100+ employees

Project: Cedar Rapids Reach 1 Flood Protection

Service: Architectural EngineeringService: Civil EngineeringService: Flood ProtectionIndustry: UtilitiesIndustry: Electric UtilitiesType: Civil Engineering+22 more

CLC Engineering, LLC

Alexandria, LA

CLC Engineering is a consulting practice based in Alexandria, Louisiana, known for its focused, client-driven approach and responsive service. It specializes in civil and structural engineering for foundations, substations, switchyards, and transmission and distribution lines. Additional services include electrical design for high-voltage systems, environmental services, and forensic engineering inspections for industrial, commercial, and residential structures. Licensed in all 50 states and one U.S. territory, CLC manages projects across the continental United States and internationally.

WebsitePhone1 office3 leaders3 credentialsSize Estimate: 11-50 employeesUpdated Jun 2026

Service detail: Civil Design

Service: Civil DesignService: Storm DrainageService: Site GradingIndustry: Power Transmission & DistributionIndustry: Electric UtilitiesType: Civil Engineering+38 more

Chappell Engineering Associates, LLC

Marlborough, MA

Consulting Engineering and Land Surveying

WebsitePhone1 office9 projectsFounded 2004Size Estimate: 25 employeesUpdated Jun 2026

Project: Barre Common Traffic Improvements

Service: Transportation EngineeringService: Highway and Local Road DesignService: Highway Interchange DesignIndustry: RailIndustry: TelecommunicationsType: Civil Engineering+47 more

Civil Renewables, Inc.

Thornton, CO

Build on a Solid Foundation!

WebsitePhone1 office2 leaders1 credentials5 publicationsSize Estimate: 1-10 employees

Service detail: Geotechnical Consulting

Service: Geotechnical ConsultingService: Desktop StudiesService: Preliminary Geotechnical InvestigationsIndustry: Renewable EnergyIndustry: WindType: Civil Engineering+30 more

Copper Roots

Fort Worth, TX

Engineering Excellence, Rooted in People

Website1 office10 leadersSize Estimate: 10-49 employeesUpdated Jun 2026

Service detail: Power System Design

Service: Power System DesignService: Greenfield, Rebuild, and Interconnection DesignService: Foundation DesignIndustry: UtilitiesIndustry: Power Transmission & DistributionType: Power & Utility Engineering+12 more

DGR Engineering

Rock Rapids, IA

Building the foundation for every day

WebsitePhone6 offices7 leadersUpdated Jun 2026

Service detail: Aviation

Service: AviationService: Civil EngineeringService: Bidding DocumentsIndustry: AviationIndustry: AirportsType: Aviation Engineering+23 more

Daedalus, Inc.

Pittsburgh, PA

Research, Design, and Engineering

WebsitePhone1 office11 projects4 leaders9 credentials1 publications

Project: Runway Lighting Product Lines

Service: ResearchService: User ResearchService: Ethnographic ResearchIndustry: HealthcareIndustry: LaboratoriesType: Mechanical Engineering+46 more

E.C. Fennell, Inc.

West Palm Beach, FL

Electrical and mechanical engineering solutions for energy, utility, and infrastructure projects

WebsitePhone3 offices10 leadersSize Estimate: 100-199 employeesUpdated Jun 2026

Service detail: Power Delivery Engineering

Service: Power Delivery EngineeringService: Transmission LinesService: Distribution SystemsIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+27 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

Electric Utility Consultants, LLC

Expert substation and transmission & distribution engineering services

Website1 leadersUpdated Jun 2026

Service detail: Substation Engineering

Service: Substation EngineeringService: Protection and Controls DesignService: Physical Electrical LayoutIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+21 more

Ellett & Gaynor, LLC

Amarillo, TX

Doing the RIGHT things RIGHT, and at the RIGHT time.

WebsitePhone1 office3 projects2 leadersFounded 1945Updated Jun 2026

Project: 46 kV to 24.9 kV Substation

Service: Substation EngineeringService: Substation Physical and Electrical DesignService: Control Building Design & SpecificationsIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+24 more

Engineered Power Solutions

Templeton, CA

Powering Innovation

WebsitePhone1 office1 projects6 leaders2 credentialsFounded 2012

Project: Voyager Tracker Project

Service: Structural EngineeringService: Photovoltaic (PV) System DesignService: Utility-Scale Infrastructure EngineeringIndustry: SolarIndustry: Power GenerationType: Structural Engineering+4 more

Equagen Engineers PLLC

Raleigh, NC

Engineering by Ingenuity

Website1 office2 credentialsSize Estimate: 51-200 employeesUpdated Jun 2026

Service detail: Substation Engineering

Service: Substation EngineeringService: Feasibility StudiesService: Site Selection and EvaluationIndustry: Power Transmission & DistributionIndustry: Renewable EnergyType: Power & Utility Engineering+54 more

ExecuPOWER

King of Prussia, PA

Powering our future through partnerships, principles, and passion.

WebsitePhone1 office5 leadersSize Estimate: 25-50 employeesUpdated Jun 2026

Service detail: Substation Engineering

Service: Substation EngineeringService: Protection and Control DesignService: Outdoor Electrical (Physical) Substation DesignIndustry: Electric UtilitiesIndustry: Renewable EnergyType: Power & Utility Engineering+43 more

FMG, Inc.

Rapid City, SD

Civil, Geotechnical, Surveying, Testing, Environmental

WebsitePhone1 office9 leaders1 credentialsFounded 1894Updated Jun 2026

Service detail: Civil Infrastructure

Service: Civil InfrastructureService: Municipal InfrastructureService: Water Resources and StormwaterIndustry: GovernmentIndustry: FederalType: Civil Engineering+36 more