Strata-G

What Strata-G does

Strata-G, LLC is a veteran-owned multidisciplinary environmental, engineering, and energy services firm headquartered in Knoxville, Tennessee, founded in 2002. The company delivers technical professional services to the U.S. Department of Energy, the National Nuclear Security Administration, multiple Department of Defense components, DOE national laboratories (Oak Ridge, Lawrence Livermore, Argonne, Brookhaven), and a limited set of commercial and higher-education clients. Service lines are organized into four divisions: Business Services (project controls, project management, process improvement); Compliance Services (environment and regulatory, safety and health, transportation and logistics, waste management); Engineering and Infrastructure (construction oversight, conceptual design, engineering services, utilities and facilities); and Nuclear and Quality Services (nuclear operations, quality assurance, and the Nuclear Service Partners, LLC subsidiary). The firm's technical base comprises 345+ professionals — over 75% with higher-education degrees, 42% holding security clearances, more than 45 veterans, and a combined 250+ technical certifications — delivering work under NQA-1, ISO 9001, and ISO 14001 frameworks.

The business model is professional services revenue generated through staff augmentation, project-based consulting, and owner's representation under federal contracting vehicles including GSA Schedule, OASIS+, the DOE/NNSA TEPS Blanket Purchase Agreement, the NNSA SCMC agreement, and ICPT participation. The company has logged more than 3.5 million safe hours worked, a 0.77 Experience Modification Rate, and over 2 million hours without a recordable or lost-time incident, supporting past-performance credentials required for federal recompetes. Customer concentration sits primarily in the Oak Ridge DOE complex (ORNL, Y-12, UCOR) with adjacent reach into Livermore, university research campuses, and limited UK/Canada engagements.

In November 2025, Strata-G joined the Southern Ohio Cleanup Company (SOCCo) joint venture led by Amentum with Fluor, Cavendish Nuclear, and additional subcontractors, which was awarded a 15-year, $5.87 billion DOE environmental cleanup contract. This positions the firm onto a multi-decade prime engagement and represents the most significant strategic move in the company's history. Leadership has been professionalized under President and CEO John Patterson (formerly of UCOR, Bechtel Jacobs, and Jacobs Engineering), with Leah Berry as COO and Bob Shawver holding the combined CFO and Chief Growth Officer role. The firm remains a privately held LLC with no disclosed institutional or private-equity ownership.

Name

Strata-G

Legal name

Strata-G, LLC

Website

https://stratag.org

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

51–100 employees

Short description

Strata-G is a veteran-owned environmental, engineering, and energy consulting firm founded in 2002, serving the U.S. Department of Energy, NNSA, national laboratories, and select commercial and university clients with multidisciplinary technical services across nuclear operations, waste management, and regulatory compliance.

Ownership category

akta.pro rank

Headquarters

HQ city

Knoxville

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Professional Services Revenue: Strata-G generates revenue through providing technical professional services to government and commercial clients, including staff augmentation, project-based consulting, and owner's representation. Services span environmental compliance, engineering, nuclear operations, quality assurance, waste management, and project management delivered across various contracting vehicles.

Go-to-market motion1 record

Distribution channels5 records

Marketing channels5 records

Core offering

Strata-G is a multidisciplinary environmental, engineering, and energy services firm that delivers technical professional services to federal agencies (DOE, NNSA, DoD), national laboratories, and commercial clients. The firm provides project controls, project management, environmental compliance, safety and health, transportation/logistics, waste management, construction oversight, conceptual design, engineering services, utilities/facilities, nuclear operations, and quality assurance services through staff augmentation, project-based consulting, and owner's representation engagements.

Product overview

Strata-G is a multidisciplinary environmental, engineering, and energy services firm offering a comprehensive portfolio of consulting and technical services to government and commercial clients. Rather than a unified software platform, the company provides distinct service lines including Project Controls, Project Management, Process Improvement, Environment & Regulatory, Safety & Health, Transportation & Logistics, Waste Management, Construction Oversight, Conceptual Design, Engineering Services, Utilities & Facilities, Nuclear Operations, and Quality Assurance & Control. These services are delivered by technical professionals through staff augmentation, project-based engagements, or as owners' representatives, tailored to DOE, DoD, and commercial sector needs across the nuclear, environmental management, and energy domains.

Differentiator

Problem solved

Functional benefit

Products and services

• Project Controls Provides cost estimating, scheduling, earned value management, resource management, performance reporting, project integration, and owners' representation services to ensure projects are delivered on time and within budget for government and commercial clients.
• Project Management Comprehensive project management expertise integrating methodical planning, resource management, scheduling, risk management, quality oversight, and stakeholder communication for complex project execution across DOE, DoD, and commercial clients.
• Process Improvement Process improvement, risk management, and quality assurance services focused on Human Performance Improvement (HPI), including Hazard Operational Reviews, Value Stream Mapping, and ISO management system development.
• Environment & Regulatory Environmental compliance, regulatory strategy, environmental management systems (EMS), and permitting services including air, water, and waste permits under CAA, NPDES, RCRA, TSCA, and CERCLA.
• Safety & Health Industrial hygiene, industrial safety, and construction/D&D safety services including hazard identification, OSHA compliance, ES&H program management, and Worker Safety & Health Program development.
• Transportation & Logistics Expert transportation services for hazardous and radioactive materials including shipping logistics planning, regulatory classification, documentation, inspections, and training for compliant shipment.
• Waste Management Cradle-to-grave management of solid, hazardous, radioactive, and mixed waste including characterization, profiling, P2 programs, EMS programs, and shipping documentation to commercial and DOE facilities.
• Construction Oversight Comprehensive construction oversight including site inspections, progress monitoring, code compliance verification, material testing, budget management, and risk assessment throughout the construction process.
• Conceptual Design Multidisciplinary conceptual design services including system requirements documents, facility layouts, design summaries, engineering manhour estimates, and statements of work by civil, structural, mechanical, electrical, and fire protection engineers.
• Engineering Services Full-range engineering services for DOE clients including mechanical, structural, civil, chemical, instrumentation & control, nuclear, quality, fire protection, and electrical engineering for energy production, infrastructure, and facility design.
• Utilities & Facilities Water, wastewater, electrical, and natural gas system management including utility operations optimization, capacity planning, facility management, and renewable energy project support.
• Nuclear Operations Nuclear operations support including quality assurance programs, operational readiness reviews, safety protocols, radiation monitoring, D&D planning, risk assessments, and compliance with federal and international nuclear safety regulations.
• Quality Assurance & Control Quality assurance program development and management compliant with ISO 9001, NQA-1, DOE orders, EPA, Naval Reactors, and TVA requirements including audits, assessments, and certification services.

Quantifiable outcome

• 3.5+ million safe hours worked
• +3 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Four partnerships are on record, tiered core and minor.

• Southern Ohio Cleanup Company (SOCCo)coreStrategic or Co-development Partner · 1 November 2025SOCCo is a joint venture led by Amentum with Fluor, Cavendish Nuclear, and subcontractors including Strata-G, A2RGC, RSI Services, and Veolia. Awarded a 15-year, $5.87 billion DOE contract for environmental cleanup services. This represents a major strategic partnership for Strata-G's continued growth in the DOE cleanup market.
• Nuclear Service Partners, LLCcoreStrategic or Co-development PartnerNuclear Service Partners, LLC is referenced as a related service entity providing nuclear quality and operations services alongside Strata-G's main service offerings.
• Smoky Mountain Service DogsminorGTM or Marketing PartnerCharitable partnership supporting military families through service dog sponsorship. Strata-G has donated toward sponsoring service dogs to support disabled veterans, demonstrating commitment to the military community.
• Environmental Facility Contractors Group (EFCOG)minorGTM or Marketing PartnerProud member of EFCOG, an organization of environmental management contractors working to improve safety, quality, and efficiency across the DOE complex.

Scale indicators6 records

Recent moves3 records

Expansion highlights6 records

Direct peers

• Amentum: Lead partner of the SOCCo joint venture (the same JV that Strata-G joined). Amentum is one of the largest DOE/nuclear environmental remediation contractors and competes head-to-head for cleanup, D&D, and nuclear operations work.
• Navarro Research and Engineering: Direct DOE/national laboratory technical services competitor providing environmental, engineering, and nuclear operations support to NNSA and DOE sites; similar size, customer base, and service mix as Strata-G.
• Longenecker & Associates: Specialized DOE/NNSA contractor focused on nuclear operations, criticality safety, and quality assurance support; competes with Strata-G for the same federal technical services engagements.
• EnergySolutions: Specialized nuclear services contractor focused on D&D, waste management, and fuel storage; competes directly with Strata-G's nuclear operations and waste management service lines.

Broad incumbents

• Parsons Corporation: Large federal services and engineering firm with a substantial DOE/nuclear and environmental remediation portfolio; competes with Strata-G on cleanup and critical infrastructure protection contracts.
• Bechtel National: One of the largest DOE nuclear and environmental cleanup prime contractors (e.g., Hanford, Savannah River); competes with Strata-G in nuclear operations, D&D, and large-scale federal engineering services.
• Jacobs Solutions: Major federal and nuclear services incumbent with deep relationships at DOE sites and national laboratories; competes across environmental, engineering, and project management services similar to Strata-G.
• Fluor Corporation: SOCCo JV partner and longstanding DOE prime contractor with nuclear and environmental remediation capabilities; competes with Strata-G on cleanup and nuclear operations task orders.
• Tetra Tech: Large environmental and engineering consulting firm with significant federal and DOE work; overlaps with Strata-G on environmental compliance, water, and remediation services.
• Leidos: Federal technical services prime with nuclear and environmental practices; competes with Strata-G on DOE, DoD, and national laboratory technical services engagements.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/stratag
• Facebookfacebook.com/strata
• LinkedInlinkedin.com/company/strata-g-llc

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles16 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Strata-G