Public engineering firm directory

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3 Phase Associates LLC

Chattanooga, TN

Electrical Engineering and Consulting Services

Website1 office2 credentialsFounded 2016Size Estimate: 10-49 employeesUpdated Jun 2026

Service detail: Electrical Engineering

Service: Electrical EngineeringService: Power System CalculationsService: Arc Flash AnalysisIndustry: UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+31 more

AM Power Solutions & Services LLC

Liberty Lake, WA

AM Power Solutions & Services LLC is an engineering and consulting practice specializing in tailored power and automation solutions. It serves power generation, utility, and industrial clients with a team of field-experienced engineers. In addition to traditional utility networks, the practice possesses specialized experience in isolated power systems and microgrid applications.

WebsitePhone1 office1 leadersUpdated Jun 2026

Service detail: Substation and Plant Installations

Service: Substation and Plant InstallationsService: Plant InstallationsService: Substation InstallationsIndustry: Power GenerationIndustry: UtilitiesType: Automation & Controls+28 more

Amped I LLC

Chicago, IL

We engineer & design systems for the reliability of the power grid.

Website1 office4 projects2 leadersFounded 2010Updated Jun 2026

Project: Solar & Wind Interconnects

Service: Protection & ControlService: Relay ProtectionService: Relay CommunicationsIndustry: Power Transmission & DistributionIndustry: Electric UtilitiesType: Power & Utility Engineering+34 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

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

DST Engineers

Powering a Reliable, Renewable Future

WebsiteUpdated Jun 2026

Service detail: Distribution Engineering

Service: Distribution EngineeringService: Distribution System Planning, Design and Engineering (OH/UG to 35 kV)Service: Load Forecasting and Growth ModelingIndustry: Electric UtilitiesIndustry: Automation & ControlsType: Power & Utility Engineering+34 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

ELECSYS Engineering Group

Valhalla, NY

End-to-End Engineering Solutions for Public Infrastructure and the Built Environment

WebsitePhone2 offices12 projects2 leadersFounded 2017Size Estimate: 1-50 employees

Project: Grand Central Madison East Side Access

Service: Electrical EngineeringService: Medium- and Low-Voltage Power DistributionService: Lighting DesignIndustry: CommercialIndustry: RetailType: MEP+58 more

Eelat Pte Ltd

Singapore

Marine & Power Generation

WebsitePhone2 offices5 credentialsFounded 2010Updated Jun 2026

Service detail: Engine and Genset Services

Service: Engine and Genset ServicesService: Engine and Genset Overhaul, Repair, and TroubleshootingService: Installation, Application Support, Testing, and CommissioningIndustry: MarineIndustry: Power GenerationType: Automation & Controls+28 more

Electric Power Systems, Inc.

Anchorage, AK

Powerful ideas. Practical results. On time delivery.

Website1 office5 projectsUpdated Jun 2026

Project: East End Road Utility Relocation

Service: EngineeringService: Electrical EngineeringService: Mechanical EngineeringIndustry: Electric UtilitiesIndustry: Power GenerationType: Power & Utility Engineering+50 more

Electrical Consultants, Inc.

Billings, MT

Engineering with Distinction

WebsitePhone1 office3 projects17 leadersFounded 1985Size Estimate: 1,200+ employees

Project: Roseland BESS

Service: Transmission EngineeringService: Overhead and Underground TransmissionService: Land Survey and Construction StakingIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+36 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

GERS USA LLC

Weston, FL

Generating comprehensive and innovative solutions for the energy sector

WebsitePhone3 officesFounded 1981Updated Jun 2026

Service detail: Power System Studies

Service: Power System StudiesService: Power Systems Planning (Generation and Transmission)Service: Power System Planning (Distribution)Industry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+30 more

Grubb Engineering, Inc.

San Antonio, TX

Electrical Power Systems Design and Testing

WebsitePhone1 office1 credentialsFounded 1981Updated Jun 2026

Service detail: Electrical System Design

Service: Electrical System DesignService: Water and Wastewater Facility Electrical DesignService: Substation, Transmission, and Distribution DesignIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+36 more

HG Engineers

Fort Walton Beach, FL

Engineering for you, wherever you are

WebsitePhone3 offices4 projects4 leadersFounded 1969Size Estimate: 10-49 employees

Project: Tactical Microgrid Standard Open Architecture Design

Service: Electrical Engineering for ArchitectureService: Lighting Systems and ControlsService: Power Distribution and SystemsIndustry: DefenseIndustry: FederalType: Electrical Engineering+20 more

Helios Electric LLC

Washington, DC

Tailored Solutions for Complex Electrical Engineering and Construction Needs

Website4 officesUpdated Jun 2026

Service detail: Electrical Design Services

Service: Electrical Design ServicesService: Transmission & DistributionService: Railway ElectrificationIndustry: IndustrialIndustry: UtilitiesType: Electrical Engineering+18 more

Infinite Energy Construction

Kansas City, MO

Powering Possibilities. Engineering Impact.

WebsitePhone1 office4 projectsFounded 1996Size Estimate: 25-100 employeesUpdated Jun 2026

Project: Visitors Gate Entryway Renovation

Service: Construction ManagementService: Design-build and bid-build deliveryService: New construction and facility renovationsIndustry: DefenseIndustry: FederalType: Automation & Controls+25 more

KCS Corporation

Engineering Services of Unmatched Value

WebsiteUpdated Jun 2026

Service detail: Electrical Engineering

Service: Electrical EngineeringService: Substation Physical DesignService: Protection and ControlsIndustry: TelecommunicationsIndustry: Power Transmission & DistributionType: Electrical Engineering+19 more

McKim & Creed

Raleigh, NC

People Helping People Solve Complex Infrastructure Challenges

Website7 offices7 projects2 credentialsFounded 1984Size Estimate: 500-1,000 employeesUpdated Jun 2026

Project: City of Sarasota Lift Station 87

Service: Water & Wastewater EngineeringService: Water ManagementService: Wastewater ManagementIndustry: Water SupplyIndustry: WastewaterType: Automation & Controls+82 more

NEI Electric Power Engineering, Inc.

Lakewood, CO

Engineering a Legacy of Expertise

WebsitePhone1 office23 leaders5 publicationsFounded 1982Size Estimate: 100-250 employees

Service detail: Substation Design and Engineering

Service: Substation Design and EngineeringService: Utility SubstationsService: Renewable SubstationsIndustry: Electric UtilitiesIndustry: Renewable EnergyType: Automation & Controls+36 more

Patterson & Dewar Engineers

Norcross, GA

Proudly Serving Clients Since 1947

WebsitePhone1 office3 credentials4 publicationsFounded 1947Updated Jun 2026

Service detail: Electric Utility Solutions

Service: Electric Utility SolutionsService: Transmission SystemsService: SubstationsIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Power & Utility Engineering+33 more

Power Infrastructure Vital Engineering, Inc.

Conquering Power Challenges, Solutions Driven Results

WebsiteUpdated Jun 2026

Service detail: Power Delivery Engineering

Service: Power Delivery EngineeringService: Substation Design & EngineeringService: Distribution Design & EngineeringIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Power & Utility Engineering+28 more

Rentricity

Mendham, NJ

Empowering Water, Powering Tomorrow

WebsitePhone1 office4 projects5 credentialsFounded 2003Updated Jun 2026

Project: Flow Control Vault Energy Recovery

Service: Hydropower Assessment and Hydraulic ModelingService: Project AssessmentService: Hydraulic Optimization and Performance ModelingIndustry: HydroelectricIndustry: Renewable EnergyType: Power & Utility Engineering+30 more

Resilient Grids LLC

Miami, FL

Providing engineering solutions to protect transmission grids and enhance power system reliability

Website1 office1 projects2 leaders3 credentials1 publicationsSize Estimate: 1-10 employees

Project: 500 KV Transmission Project

Service: EMP Consulting ServicesService: Conceptual Engineering Evaluation for Grid Protection from EMPService: Short and Mid-Term Planning for Solar Storms and EMP/E1, E2 and E3 Sensing and Protection ProgramsIndustry: Power Transmission & DistributionIndustry: Electric UtilitiesType: Power & Utility Engineering+10 more