Public engineering firm directory

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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

ALP Systems, Inc.

Waynesville, NC

ALP Systems, Inc. is a lightning protection engineering and installation firm in Waynesville, North Carolina, with over 30 years of experience. It provides engineering, consulting, and design services for structural lightning protection, grounding and bonding systems, and surge protection, certified by LPI Master Designers. ALP's technicians hold LPI Master Installer, LPI Journeyman Installer, and extensive OSHA safety credentials and serve commercial, residential, government, military, oil and gas, petrochemical, solar and wind energy, broadcasting, and communications sectors. It has completed projects in 43 states and internationally.

WebsitePhone1 office5 credentialsUpdated Jun 2026

Service detail: Engineering, Consulting & Design

Service: Engineering, Consulting & DesignService: Site-specific EngineeringService: ConsultingIndustry: Oil & GasIndustry: DefenseType: Electrical Engineering+13 more

Campos EPC, LLC

Denver, CO

The Leader In Energy Infrastructure

WebsitePhone20 offices1 projects11 leaders3 publicationsFounded 2005

Project: 350MW Data Center Power Generation & Substation Facility

Service: EngineeringService: Pipeline EngineeringService: Transmission And Midstream Pipeline DesignIndustry: Oil & GasIndustry: UtilitiesType: EPC+51 more

Cerjan Acoustics

Westminster, CO

Industrial Noise & Vibration Solutions: Expert Acoustic Consultation

WebsitePhone2 offices2 leaders2 credentialsFounded 2017Size Estimate: 1-9 employees

Service detail: Noise Measurements

Service: Noise MeasurementsService: Short and Long-Term MonitoringService: System Level DefinitionIndustry: Renewable EnergyIndustry: MiningType: Acoustic Consulting+25 more

Corval Group

Saint Paul, MN

We Build Confidence

WebsitePhone1 office5 projects2 leaders12 credentialsFounded 1921

Project: ONEOK Rockies Midstream Compressor Station Program

Service: Project DevelopmentService: Early-phase FeasibilityService: Scope DefinitionIndustry: Power GenerationIndustry: Oil & GasType: EPC+29 more

Endeavor Professional Services, LLC

State College, PA

Engineering Excellence for the Future

WebsitePhone1 officeUpdated Jun 2026

Service detail: Civil Engineering & Permitting

Service: Civil Engineering & PermittingService: Preliminary Site Scouting, Routing, and SelectionService: Facility DesignIndustry: Oil & GasIndustry: UtilitiesType: Civil Engineering+29 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

LJA Program Management LLC

Houston, TX

. Client Focused.

WebsitePhone5 offices3 projects5 credentialsFounded 1972Updated Jun 2026

Project: Ranew's E-Coat Masterplan

Service: Aviation ServicesService: Civil EngineeringService: Public Infrastructure and WorksIndustry: GovernmentIndustry: Land DevelopmentType: Civil Engineering+75 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

NAI Company

Houston, TX

Specializing In Oil And Gas Transmission, Pipeline Integrity Management Services, Leak Detection & Pipelines Maintenance For 25 Years

WebsitePhone1 office1 credentialsFounded 1998Updated Jun 2026

Service detail: Pipeline Integrity Management

Service: Pipeline Integrity ManagementService: Pipeline Inventory MonitoringService: Pipeline Stress MonitoringIndustry: Oil & GasIndustry: UtilitiesType: Process Engineering+9 more

NGE Consulting

Moon Township, PA

Geotechnical and Environmental Engineering Solutions

WebsitePhone2 offices5 projectsUpdated Jun 2026

Project: Exploratory Drilling for Coal Reserves

Service: Geotechnical Consulting and DrillingService: Subsurface and Foundation EngineeringService: Commercial development geotechnical investigationsIndustry: Environmental & RemediationIndustry: Oil & GasType: Geotechnical Engineering+33 more

Orbital Engineering, Inc.

One Orbital. Every Solution.

WebsiteUpdated Jun 2026

Service detail: Utility Services

Service: Utility ServicesService: Substation EngineeringService: Transmission Line EngineeringIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Power & Utility Engineering+37 more

Power Control Engineering Solutions, LLC

Tulsa, OK

Tulsa's Premier Electrical Engineering, Automation, and Manufacturing Facility

Website1 office4 credentialsFounded 2003Updated Jun 2026

Service detail: Electrical Engineering and Design

Service: Electrical Engineering and DesignService: Power Distribution SystemsService: Protective Relaying and Relay ProgrammingIndustry: Oil & GasIndustry: Power GenerationType: Electrical Engineering+26 more

Trestles, LLC

Goodlettsville, TN

Engineering Innovative and Intellectual Solutions for the Environment

WebsitePhone1 office1 credentialsSize Estimate: 1-50 employeesUpdated Jun 2026

Service detail: Natural Gas Engineering

Service: Natural Gas EngineeringService: Compressor Station EngineeringService: Station Retrofits and ReversalsIndustry: Oil & GasIndustry: Environmental & RemediationType: Environmental Engineering+94 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