Public engineering firm directory

Find engineering consulting firms by capability and location.

Search engineering firm profiles built for buyers who need a shortlist, not a sales pitch.

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Sowinski Sullivan Architects Pc

Sparta, NJ

Transportation Architects and Engineers

WebsitePhone2 offices5 projects60 leaders1 credentialsFounded 1996

Project: MTA Railcar Accepting and Testing Facility

Service: Transportation DesignService: Bus & IntermodalService: RailIndustry: AviationIndustry: Freight & LogisticsType: Architecture & Engineering+7 more

Specialized Engineering, LLC

Mandeville, LA

Economical, innovative, and safe engineering solutions with quick turnaround.

WebsitePhone1 office5 projects2 leaders2 credentialsFounded 2015

Project: Odessa Crypto Mining Data Center Site Development

Service: Structural Steel and Concrete DesignService: Pipe Rack and Cable Tray Support Structural DesignService: Industrial Access Platform EngineeringIndustry: Oil & GasIndustry: PetrochemicalType: Civil Engineering+20 more

Spectrum Engineers, Inc.

Salt Lake City, UT

High-Performance Engineers Deliver High-Performance Results

WebsitePhone4 offices4 projects1 credentialsUpdated Jun 2026

Project: Utah State Correctional Facility

Service: Electrical EngineeringService: Essential Power Distribution & Emergency StandbyService: Uninterruptible Power Supply SystemsIndustry: HealthcareIndustry: EducationType: MEP+50 more

Stable Ground In-Situ, LLC

Towson, MD

Build Confidently

Website2 offices2 leaders2 credentialsSize Estimate: 1-10 employeesUpdated Jun 2026

Service detail: In-Situ Soil Testing

Service: In-Situ Soil TestingService: Cone Penetration Testing (CPT)Service: Plate Dilatometer Testing (DMT)Industry: TransportationIndustry: AviationType: Geotechnical Engineering+22 more

Stanley Consultants

Muscatine, IA

Connect. Create. Contribute.

Website1 office5 projects1 credentials3 publicationsFounded 1913Size Estimate: 1,000+ employees

Project: I-490/IL 390 Interchange

Service: Engineering & DesignService: Civil EngineeringService: Electrical EngineeringIndustry: Power GenerationIndustry: UtilitiesType: Architecture & Engineering+52 more

Stoddard Power Systems, LLC

Eugene, OR

Experts in Electrical Power Systems Engineering

WebsitePhone1 office1 projects8 leaders1 credentialsSize Estimate: 1-10 employees

Project: New GSU Switchyard at RS Kerr Dam

Service: Power System DesignService: Substation and Distribution DesignService: Turnkey Design-Build ServicesIndustry: Power GenerationIndustry: Electric UtilitiesType: Electrical Engineering+24 more

Sub-Engineering LLC

Designing Tomorrow's Electric System

Website1 leadersUpdated Jun 2026

Service detail: Conceptual & Preliminary Engineering

Service: Conceptual & Preliminary EngineeringService: Conceptual DesignService: Preliminary EngineeringIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+19 more

Substation Engineering Company

Reading, PA

Engineering Excellence

WebsitePhone5 officesFounded 2006Updated Jun 2026

Service detail: Substation Engineering

Service: Substation EngineeringService: Transmission EngineeringService: Distribution EngineeringIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+6 more

Sun Engineering, LLC

Phoenix, AZ

Sun Engineering, LLC offers electrical, mechanical, and plumbing consulting engineering services. Located in Phoenix, Arizona, the practice has decades of design engineering experience.

WebsitePhone2 offices8 projects4 leadersSize Estimate: 1-9 employeesUpdated Jun 2026

Project: Phoenix Light Rail Transportation System

Service: Electrical EngineeringService: Aviation and Airfield LightingService: Building Power DistributionIndustry: AirportsIndustry: AutomotiveType: Automation & Controls+47 more

Systems Engineering, Inc.

Madison, MS

Automation, Power, and Electrical Engineers

WebsitePhone1 officeSize Estimate: 1-25 employeesUpdated Jun 2026

Service detail: Industrial Automation and PLC Systems

Service: Industrial Automation and PLC SystemsService: PLC Panel Design and Turn-Key FabricationService: PLC ProgrammingIndustry: AutomotiveIndustry: WastewaterType: Automation & Controls+42 more

TEAMWORKnet Inc

Lakeland, FL

Electrical Power Engineering You Can Depend on

WebsitePhone1 office1 leaders5 credentialsFounded 1977Updated Jun 2026

Service detail: Power Engineering & Electrical Design

Service: Power Engineering & Electrical DesignService: Power Distribution System DesignService: Substation Design & EngineeringIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+32 more

TERAWATT Engineering

St. Louis, MO

Fueling a Trillion Watts Ahead

WebsitePhone1 officeUpdated Jun 2026

Service detail: Substation Engineering

Service: Substation EngineeringService: Physical DesignService: Protection and Controls (P&C) DesignIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Power & Utility Engineering+13 more

TOP Engineers Plus, PLLC

San Antonio, TX

Communications Engineering Services for Critical Infrastructure & Operations

WebsitePhone1 office4 projectsSize Estimate: 1-25 employeesUpdated Jun 2026

Project: Fiber Optic Replacement Program (97-mile, 26-substation)

Service: Technology RoadmapService: Functional, technical, and organizational needs assessmentService: Infrastructure Roadmap development (physical architecture and medium)Industry: Electric UtilitiesIndustry: TelecommunicationsType: Automation & Controls+46 more

TOR Engineering Corporation

Phoenix, AZ

The Power Is in Our People

WebsitePhone1 office7 leadersFounded 1985Size Estimate: 70-249 employeesUpdated Jun 2026

Service detail: Electrical Substation Engineering & Design

Service: Electrical Substation Engineering & DesignService: Greenfield & Brownfield Engineering & Design ServicesService: Single Line DevelopmentIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+41 more

TRC Engineering, Professional LLC

Jacksonville, FL

Applying Military-Level Discipline and Precision to Construction

WebsitePhone1 office5 projects1 leadersSize Estimate: 1-10 employeesUpdated Jun 2026

Project: Standby Electrical Power Generation and Distribution Network Upgrade

Service: Commissioning and Quality OversightService: Senior Commissioning Agent ServicesService: Construction ManagementIndustry: CommercialIndustry: IndustrialType: Electrical Engineering+25 more

Taylor Engineering

Yuma, AZ

From concept, engineering and all the details of construction through completion

WebsitePhone1 office7 projects2 leaders4 credentialsUpdated Jun 2026

Project: Davis-Monthan Air Force Base SABER Contract

Service: General ContractingService: Heavy equipment operationsService: Earthwork and utilitiesIndustry: FederalIndustry: DefenseType: Civil Engineering+15 more

The Electrical Testing Company, LLC

Hayward, CA

Independent electrical testing and engineering studies

WebsitePhone1 office1 credentialsFounded 2014Updated Jun 2026

Service detail: Electrical Testing and Commissioning

Service: Electrical Testing and CommissioningService: Acceptance TestingService: Cable Insulation and Over-Potential TestingIndustry: CommercialIndustry: HealthcareType: Electrical Engineering+21 more

The Engineering Partners Inc

San Diego, CA

Engineering a Better World

WebsitePhone2 offices2 projects9 leadersFounded 1985Size Estimate: 150+ employees

Project: City of San Diego Block 4Y Dry Utilities Undergrounding

Service: Electric Distribution Engineering & DesignService: Electric System ReliabilityService: New Business & Development SupportIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+35 more

Total Electric Engineering Inc

Meridian, ID

Committed to designing projects with integrity and professionalism

WebsitePhone1 office5 projects1 credentialsUpdated Jun 2026

Project: Mississippi Air Force Base Project

Service: Facility Design and EngineeringService: Electrical System DesignService: Power Facility and Substation DesignIndustry: CommercialIndustry: GovernmentType: Electrical Engineering+12 more

Toth and Associates

Springfield, MO

Full-service consulting engineering specializing in electric utility engineering, structural engineering, civil engineering, land surveying, and GIS.

WebsitePhone5 offices10 leaders1 credentialsFounded 2003Size Estimate: 150-250 employees

Service detail: Electrical Engineering

Service: Electrical EngineeringService: Electrical System PlanningService: Electrical Substation DesignIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Civil Engineering+38 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

Transit Systems Engineering, Inc.

Emeryville, CA

Engineering Smarter Solutions

WebsitePhone2 offices10 projects6 leadersUpdated Jun 2026

Project: BART: Hayward Maintenance Complex Phase I & II

Service: Transit Systems EngineeringService: Train Control and SignalingService: Communications Systems EngineeringIndustry: TransitIndustry: RailType: Transportation Engineering+17 more

Triple Check Engineering, LLC

Waleska, GA

Make sure your next project has been Triple Checked!

Website1 office5 leadersSize Estimate: 1-10 employeesUpdated Jun 2026

Service detail: Substation Engineering and Design

Service: Substation Engineering and DesignService: Physical Layout and DesignService: Project Scoping and Cost EstimatingIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Power & Utility Engineering+3 more

True Environmental

Phoenix, AZ

Environmental Engineering Excellence

Website2 offices6 projects2 credentialsSize Estimate: 700 employeesUpdated Jun 2026

Project: Atlantic Shores Offshore Wind

Service: Engineering ServicesService: Environmental ServicesService: Federal Program ServicesIndustry: Environmental & RemediationIndustry: MiningType: Environmental Engineering+16 more