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

ABQ Engineering, Inc.

Albuquerque, NM

Cost-effective, one-stop engineering, surveying, and planning services

WebsitePhone1 office5 projects1 leadersSize Estimate: 10-49 employeesUpdated Jun 2026

Project: Los Alamos County Golf Course Community Building

Service: Civil EngineeringService: Drainage and Hydrology AnalysisService: Grading and Drainage DesignIndustry: CommercialIndustry: RetailType: Civil Engineering+38 more

AMG, Inc.

Dayton, OH

Industrial Facility Engineering

WebsitePhone1 office12 projects1 leaders2 credentials2 publications

Project: Calcium Carbonate Production Plant

Service: Process EngineeringService: PFD and P&ID DevelopmentService: Material and Energy Balance SimulationIndustry: ChemicalsIndustry: Food & BeverageType: Automation & Controls+73 more

ARM EnerTech Associates, LLC

Johnstown, PA

Precise. Responsive. Solutions.

WebsitePhone4 offices4 projects7 credentialsFounded 1976Updated Jun 2026

Project: Fresh Water Withdrawal Station

Service: Automation & Control ServicesService: Supervisory Control & Data Acquisition (SCADA)Service: Industrial Process ControlIndustry: ManufacturingIndustry: UtilitiesType: Automation & Controls+31 more

ArcSine Engineering

Redding, CA

The Expert's Expert.

WebsitePhone2 offices4 projects3 credentialsFounded 1978Size Estimate: 25-50 employees

Project: Town of Windsor SCADA System

Service: Electrical EngineeringService: Lighting Design and ModelingService: Power System StudiesIndustry: WastewaterIndustry: Water SupplyType: Automation & Controls+33 more

Ardebili Engineering

Scottsdale, AZ

We deliver efficiency without ever compromising on quality.

WebsitePhone2 offices5 leadersFounded 2009Updated Jun 2026

Service detail: Mechanical Engineering

Service: Mechanical EngineeringService: Ventilation & Indoor Air QualityService: Chilled & Heated Water SystemsIndustry: CommercialIndustry: EducationType: MEP+31 more

Automation Control Service LLC

Pensacola, FL

Control System Integrator specializing in Automation & Information Systems

WebsitePhone1 office8 credentialsFounded 2003Updated Jun 2026

Service detail: Municipal & Industrial Automation

Service: Municipal & Industrial AutomationService: PLC & HMI ProgrammingService: SCADA & DCS IntegrationIndustry: GovernmentIndustry: IndustrialType: Automation & Controls+23 more

Casne Engineering, Inc.

Bellevue, WA

Supporting America's Infrastructure

Website1 office3 projects1 publicationsFounded 1981Size Estimate: 100-200 employeesUpdated Jun 2026

Project: Natural Gas Turbine Fleet Monitoring

Service: Electrical EngineeringService: Medium and low voltage equipment and distribution systemsService: Primary and secondary unit substationsIndustry: AerospaceIndustry: Data CentersType: Automation & Controls+50 more

Century West Engineering Corporation

Bend, OR

Design | Community | Solutions

WebsitePhone3 offices5 leadersFounded 1969Updated Jun 2026

Service detail: Municipal Planning & Engineering

Service: Municipal Planning & EngineeringService: WaterService: WastewaterIndustry: GovernmentIndustry: AviationType: Civil Engineering+22 more

Claymore Group LLC

Daphne, AL

Multi-Discipline Engineering, Design, and Precision Fabrication

WebsitePhone1 office1 credentialsUpdated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Road and Bridge DesignService: Water Systems EngineeringIndustry: IndustrialIndustry: ManufacturingType: Civil Engineering+52 more

Clear Process Engineering & Technology

Covington, LA

Boiler, combustion, thermal, and steam systems engineering.

WebsitePhone1 office4 projects9 leadersFounded 2015Updated Jun 2026

Project: BFB boiler for high-moisture biomass - South America

Service: Energy AuditsService: Boiler Efficiency EvaluationService: Loss and Opportunity RankingIndustry: Power GenerationIndustry: Biomass & BioenergyType: Process Engineering+74 more

DEG US LLC

Dallas, TX

Engineering Made Simple

WebsitePhone2 offices3 credentialsUpdated Jun 2026

Service detail: Instrumentation Engineering

Service: Instrumentation EngineeringService: Field Instrument SelectionService: Front End DesignIndustry: Oil & GasIndustry: PetrochemicalType: Electrical Engineering+9 more

Design Tree

Alexandria, MN

Our Roots. Your Growth.

WebsitePhone1 office14 projects9 leadersUpdated Jun 2026

Project: Rogers Indoor Turf Facility / HealthPartners Fieldhouse

Service: Civil EngineeringService: Applications for funding agenciesService: Site layout and grading designIndustry: EducationIndustry: GovernmentType: Civil Engineering+53 more

Dreiym Engineering

Houston, TX

Electrical, Corrosion, and Forensic Engineering

WebsitePhone1 office3 leaders3 credentialsFounded 2014Size Estimate: 1-9 employees

Service detail: Electrical Engineering

Service: Electrical EngineeringService: Power System StudiesService: Electrical Design & ComplianceIndustry: UtilitiesIndustry: TelecommunicationsType: Electrical Engineering+21 more

Element 29 LLC

Tampa, FL

Multidisciplinary engineering for industrial, energy, and mission-critical systems.

WebsitePhone1 office19 projects1 leaders2 credentialsUpdated Jun 2026

Project: 20.5 MGD Reverse Osmosis System

Service: Process and Chemical EngineeringService: Process flow diagrams and P&IDsService: Mass and energy balancesIndustry: IndustrialIndustry: ManufacturingType: Process Engineering+108 more

Goswami Engineering LLC

Jacksonville, FL

Your Engineer

WebsitePhone1 office1 projects1 leadersSize Estimate: 1-10 employeesUpdated Jun 2026

Project: Flagship Property HVAC Remediation

Service: Mechanical EngineeringService: HVAC Systems DesignService: Air Distribution SystemsIndustry: HealthcareIndustry: CommercialType: MEP+40 more

HLDSR Engineering LLC

Where quality is excellence and clients are family

Website1 leadersFounded 2016Updated Jun 2026

Service detail: Electrical Engineering

Service: Electrical EngineeringService: Power Distribution DesignService: Site and Architectural LightingIndustry: WastewaterIndustry: Water SupplyType: MEP+29 more

Hallberg Engineering, Inc.

White Bear Lake, MN

Design excellence that delivers enduring value.

Website2 offices4 leaders6 credentialsFounded 1979Size Estimate: 40+ employeesUpdated Jun 2026

Service detail: Mechanical Engineering and Design

Service: Mechanical Engineering and DesignService: HVAC SystemsService: Boiler and Chilled Water PlantsIndustry: CommercialIndustry: EducationType: Electrical Engineering+28 more

I3 Engineering & Consulting, LLC

Bridgeport, WV

Integrity. Initiative. Innovation.

WebsitePhone1 office3 leaders3 credentialsFounded 2013Size Estimate: 35-49 employees

Service detail: Facilities Design & Engineering

Service: Facilities Design & EngineeringService: Piping & Mechanical DesignService: Electrical EngineeringIndustry: Oil & GasIndustry: InfrastructureType: Civil Engineering+10 more

Keystone Engineering Group, Inc.

Frazer, PA

Forward Thinking for a Sustainable Future

WebsitePhone5 offices8 leadersFounded 1997Size Estimate: 80 employeesUpdated Jun 2026

Service detail: Automation & Control Systems

Service: Automation & Control SystemsService: Control Systems & SCADA DesignService: Complete Systems IntegrationIndustry: Water SupplyIndustry: WastewaterType: Electrical Engineering+20 more

LDIS, LLC

Arvada, CO

Engineering Solutions Tailored to You

WebsitePhone1 office8 projects5 leadersFounded 2003Updated Jun 2026

Project: Large Scale Amine Carbon Capture and CO2 Sequestration Facility

Service: Construction ManagementService: ProcurementService: SourcingIndustry: ChemicalsIndustry: MiningType: Automation & Controls+63 more

LIN Consulting, Inc.

Diamond Bar, CA

Proven Track Record

WebsitePhone3 offices6 projects6 leaders8 credentialsFounded 1997

Project: 7th Standard Road Widening

Service: Traffic EngineeringService: Fiber Optic Communication SystemsService: Intelligent Transportation Systems (ITS)Industry: TransportationIndustry: Highways & RoadsType: Civil Engineering+27 more

Live Oak Consultants LLC

North Charleston, SC

HDR | LOC provides full-service engineering and consulting from North Charleston, South Carolina. Disciplines span Civil, Structural, Mechanical, Electrical, Security, and Forensic Engineering, supported by project management and planning advisory services for clients in industrial, government, healthcare, commercial, and educational sectors.

WebsitePhone1 office22 projects1 leadersUpdated Jun 2026

Project: Solvay USA - Chemical Facility Security

Service: Civil EngineeringService: Site DevelopmentService: Utilities DesignIndustry: AutomotiveIndustry: CommercialType: Civil Engineering+39 more

LoopCalTech LLC

Engineering Tomorrow

Website1 leaders1 credentialsSize Estimate: 1-25 employeesUpdated Jun 2026

Service detail: Instrumentation and Control Systems

Service: Instrumentation and Control SystemsService: Distributed Control Systems (DCS) design and integrationService: Process automation and SCADA systemsIndustry: Oil & GasIndustry: PetrochemicalType: Automation & Controls+80 more