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

Blair, Church & Flynn Consulting Engineers

Clovis, CA

Service. Quality. Integrity.

WebsitePhone6 offices3 leaders5 credentialsFounded 1958Updated Jun 2026

Service detail: Planning, Permitting & Consulting

Service: Planning, Permitting & ConsultingService: Alternatives AnalysesService: Constructability ReviewsIndustry: Power GenerationIndustry: Electric UtilitiesType: Civil Engineering+72 more

D'Appolonia Engineers

Pittsburgh, PA

We create foundations for the future.

WebsitePhone1 office13 credentialsFounded 1956Updated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Foundation DesignService: Site Geotechnical ExplorationIndustry: MiningIndustry: Electric UtilitiesType: Civil Engineering+38 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

Epassa Electrical Engineering, LLC

Houston, TX

Power is our ExpErtisE

WebsitePhone1 office1 leaders13 credentialsSize Estimate: 1-9 employeesUpdated Jun 2026

Service detail: Electrical Power Studies

Service: Electrical Power StudiesService: Arc Flash AnalysisService: Protection and Coordination StudiesIndustry: Renewable EnergyIndustry: WindType: Electrical Engineering+15 more

Fossil Energy Research Corporation

Laguna Hills, CA

Specialists in environmental and energy technologies

WebsitePhone1 officeFounded 1984Updated Jun 2026

Service detail: Catalyst Activity Testing

Service: Catalyst Activity TestingService: Bench-Scale Activity TestingService: Micro-Scale Activity TestingIndustry: Emissions ControlIndustry: Power GenerationType: Combustion Engineering+32 more

GDS Associates, Inc.

Marietta, GA

Energy Consultants, Engineers, and Leaders

WebsitePhone1 office10 leaders1 publicationsFounded 1986Updated Jun 2026

Service detail: Power Supply & Transmission

Service: Power Supply & TransmissionService: Supply Portfolio Development & RTO/ISO ManagementService: Transmission & Generation Investment PlanningIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Power & Utility Engineering+17 more

Geosyntec Consultants

Boca Raton, FL

Innovation to Build Leading-Edge Solutions

WebsitePhone1 office5 projects4 leaders1 credentialsFounded 1983

Project: FERC Part 12D Safety Review for the Oroville Dam Complex

Service: Contaminated Site Assessment and CleanupService: Site characterization and data collectionService: Remedial alternatives analysisIndustry: Water ResourcesIndustry: Electric UtilitiesType: Civil Engineering+66 more

Gonzalez-Strength & Associates, Inc.

Birmingham, AL

Your Project, Our Passion

WebsitePhone1 officeSize Estimate: 100+ employeesUpdated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Planning and ApprovalsService: Due Diligence ReportingIndustry: Land DevelopmentIndustry: Highways & RoadsType: Civil Engineering+44 more

Intuition & Logic

Chesterfield, MO

It is by Logic that we prove, but by Intuition that we discover.

WebsitePhone1 office12 projectsSize Estimate: 1-25 employeesUpdated Jun 2026

Project: Walker Lake in Kirkwood Park

Service: Stormwater ManagementService: Stormwater Master PlanningService: Hydrology and Hydraulics AnalysisIndustry: GovernmentIndustry: FederalType: Civil Engineering+51 more

McMillen

Boise, ID

Because it matters.

WebsitePhone1 office30 projects3 credentialsFounded 2002Size Estimate: 50-100 employees

Project: Pacificorp Engineering Services

Service: Water Retention InfrastructureService: Heavy Civil and Concrete WorkService: Spillway and Gate RehabilitationIndustry: HydroelectricIndustry: Renewable EnergyType: Civil Engineering+33 more

Meridian Environmental, Inc.

Seattle, WA

Environmental Science and Regulatory Compliance Services

WebsitePhone1 office2 projects4 credentialsSize Estimate: 5-20 employeesUpdated Jun 2026

Project: Lewis River FERC License Implementation Studies

Service: Aquatic ResourcesService: Fish passage assessmentsService: Instream habitat assessments and flow studiesIndustry: HydroelectricIndustry: Natural ResourcesType: Environmental Engineering+15 more

Normandeau Associates

Bedford, NH

Solutions Grounded in Science

WebsitePhone1 office6 projects3 leaders1 credentialsUpdated Jun 2026

Project: Oyster Creek and Barnegat Bay Environmental Sampling

Service: Environmental Permitting and Regulatory ComplianceService: Marine and Freshwater SciencesService: Fisheries SurveysIndustry: Power GenerationIndustry: NuclearType: Environmental Engineering+24 more

Stillwater Sciences

Stillwater Sciences specializes in science-based, technical approaches to natural and water resource management. Using a collaborative and multi-disciplinary approach, Stillwater integrates habitat and species information to understand critical ecosystem processes and identify effective measures for restoring and managing rivers and their floodplains as functioning ecosystems. Stillwater works closely with agencies, industry, and non-governmental organizations to deliver technical information for scientifically sound management decisions across the Western United States. Core areas of expertise include fish and aquatic ecology, water quality, environmental engineering, geomorphology, botany and riparian vegetation, wildlife, and spatial analysis/GIS.

Website15 projectsUpdated Jun 2026

Project: Copper River Watershed Salmon Habitat Monitoring Plan

Service: Watershed AssessmentService: Watershed analysis including ecological flow evaluations, riparian habitat establishment, and instream habitat creation and maintenanceService: Watershed Management Plans, Master Plans, and Integrated Regional Water Management PlansIndustry: Water ResourcesIndustry: Environmental & RemediationType: Environmental Engineering+27 more

Technical Consulting Group LLC

San Juan, PR

services for sustainable development

WebsitePhone1 office6 projects1 leadersFounded 1983Updated Jun 2026

Project: Study of Independent Water Supply Systems

Service: Environmental EngineeringService: ASTM Environmental Site AssessmentsService: RemediationIndustry: ChemicalsIndustry: Food & BeverageType: Architecture & Engineering+95 more

Verdanterra, LLC

Madison, WI

Dedicated Energy Infrastructure Specialists.

WebsitePhone2 offices6 leadersUpdated Jun 2026

Service detail: Environmental Assessment

Service: Environmental AssessmentService: Natural Resource Field AssessmentsService: Wetland and Waterway DelineationsIndustry: WindIndustry: SolarType: Civil Engineering+25 more