What GSE Solutions does

GSE Solutions is a privately held engineering and simulation services company headquartered in Columbia, Maryland, with 55+ years of operating history (founded 1971) and over 1,100 simulation installations globally across nuclear, fossil, and process industries. The company designs, builds, and delivers high-fidelity full-scope simulators for nuclear and fossil power plants, using proprietary physics-based models (a six-equation solver for mass, energy, and momentum) that comply with ANSI/ANS 3.5 and ANSI/ISA 77.20 standards. Its product portfolio includes full-scope and engineering simulators, the EnVision On-Demand cloud training platform, JPro process simulation software, Simulation-Assisted Design Engineering (SADE), Thermal Performance Software (TSM), and Data Validation & Reconciliation (DVR) tools. Complementary services span design engineering, ASME Code and Section XI ISI/IST programs, license renewal, and professional training courses offering CEU/PDH credits.

GSE generates revenue through a mix of project-based simulator deliveries (selling prices are quote-based, custom-engineered, 12-36 month cycles), recurring program engineering contracts via Specialty Engineer of Choice (SEOC) arrangements with major U.S. nuclear operators, subscription-based cloud training (EnVision On-Demand), and software licensing/maintenance. Distribution is primarily through enterprise field sales targeting large nuclear operators, utilities, and process plants, with inside sales for training and software, and channel partnerships with main automation contractors (e.g., Emerson) for EPC projects. The company went private in October 2024 through a merger with Pelican Energy Partners at $4.60 per share, and has since pursued active M&A, including the January 2026 acquisition of Iddeal Concepts/Services/Solutions to expand its ASME Code engineering program capabilities.

Name

GSE Solutions

Legal name

GSE Solutions

Website

https://gses.com

Company type

Private

Founded year

1971

Operating status

Operating

Headcount range

251–500 employees

Short description

GSE Solutions is a privately held engineering firm that provides high-fidelity plant simulators, cloud-based training (EnVision On-Demand), and ASME Code engineering programs to nuclear, fossil, and process industry operators worldwide.

Ownership category

akta.pro rank

Product category

Power Plant Simulation Software

NAICS

Computer Systems Design and Related Services (54151), Computer Systems Design Services (541512), Other Specialized Design Services (54149)

SIC

Services-Computer Integrated Systems Design (7373), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Training, Qualification & Simulator Services (Licensed Operators, Maintenance Training) (EUAKABAL)

akta.pro secondary industries

Gen IV / Advanced Reactor Systems (SFR, LFR, GFR, MSR, HTGR, Microreactors) (EUAKADAC), Instrumentation & Control (I&C) Integration & Commissioning Support (EUAKAAAH)

Keywords

• Nuclear plant simulators
• Power plant simulation
• Operator training software
• Process simulation software
• Engineering program services

Headquarters

HQ city

Sykesville

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. High-Fidelity Simulator Sales and Delivery: Design, engineering, and delivery of full-scope, high-fidelity simulators for nuclear, fossil, and process plants. Projects involve long sales cycles, custom engineering, and commissioning. Revenue is project-based, typically spanning 12-36 months per delivery.
2. Engineering and Consulting Services: A broad portfolio of engineering services including design engineering (mechanical, electrical, civil/structural, fire protection), engineering programs (ASME Code, Section XI, Balance of Plant, Equipment Qualification, Regulatory), thermal performance services, licensing and license renewal support, and procedure staffing. Revenue is project-based or contract-based (e.g., multi-year specialty engineering contracts).
3. Training Services and EnVision On-Demand: Instructor-led and self-serve training delivered via the EnVision On-Demand cloud platform, classroom simulators, and on-site training courses. Training covers operator training, engineering programs, thermal performance, and certification preparation (CEU/PDH credits for Professional Engineers).
4. Software Licensing and Maintenance: Licensing of proprietary software including the IDDEAL Software Suite, JPro process simulation software, and thermal performance software (TSM). Includes ongoing software maintenance, updates, and support contracts.
5. Program Engineering Contracts: Multi-year contracts for Specialty Engineer of Choice (SEOC) arrangements and ongoing programmatic support (ISI/IST updates, containment testing, equipment qualification). These recurring service agreements provide steady revenue from major nuclear operators.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels6 records

Core offering

GSE Solutions designs, engineers, and delivers high-fidelity, full-scope nuclear and fossil power plant simulators built on proprietary six-equation solvers, supported by the EnVision On-Demand cloud training platform, JPro process simulation software for LNG plants, ASME Code compliance programs, thermal performance monitoring software, and design engineering services for nuclear, thermal, oil & gas, and advanced reactor operators.

Product overview

GSE Solutions provides a comprehensive portfolio of simulation, training, and engineering solutions for nuclear, fossil, and process industries. The offering is organized as a platform-plus-modules architecture, anchored by high-fidelity simulators (Full-Scope, Engineering, Second, and Classroom Simulators) that support operator training, virtual commissioning, and engineering analysis. The EnVision On-Demand platform delivers cloud-based e-learning tutorials and universal simulations. Complementary products include JPro process simulation software for LNG applications, Thermal Performance Software (TSM) for power monitoring, and Data Validation & Reconciliation (DVR) tools. Engineering Programs cover ASME Code compliance including Section XI ISI/IST requirements, now enhanced by the acquired IDDEAL Software Suite. SADE (Simulation-Assisted Design Engineering) integrates simulation into nuclear digital upgrades. The portfolio also includes License Renewal Services, Design Engineering (mechanical, electrical, civil/structural, fire protection), and professional Training Courses.

Differentiator

Problem solved

Functional benefit

Brands

• EnVision: Cloud-based e-learning and simulation platform providing tutorials and simulations for operator and engineer training.
• JPro

Products and services

• Full-Scope Simulators High-fidelity nuclear and fossil power plant simulators that replicate actual plant control rooms for operator training, engineering analysis, and virtual commissioning, meeting ANSI/ANS 3.5 standards for regulatory compliance and supporting PWR, BWR, SMR, and microreactor designs.
• Engineering Simulators Plant-specific simulators for engineering analysis, virtual commissioning, and testing plant modifications before implementation in actual facilities, used by engineering departments at nuclear and fossil power plants.
• EnVision On-Demand Cloud-based e-learning and simulation platform providing self-paced tutorials and universal simulations for training operators and engineers across power plant operations, accessible from any PC with an internet browser and supporting instructor-led and self-serve delivery.
• Generic and Classroom Simulators Part-task and classroom simulators for teaching fundamental plant operations and procedures in a collaborative learning environment, including VPanel soft-panel simulators that run on laptops or standard hardware.
• Second Simulators Additional unit-specific simulators enabling cross-training, virtual commissioning of plant modifications, and maintaining simulator availability for nuclear and fossil power plant operators.
• JPro Process Simulation Software Process simulation software for LNG liquefaction cycles including gas treatment, liquefaction, and fractionation, used to build operator training simulators and to test and validate distributed control systems before plant commissioning.
• Simulation-Assisted Design Engineering (SADE) Simulation-based validation methodology for nuclear digital upgrades that uses high-fidelity simulation to de-risk design changes, optimize safety and performance, reduce commissioning time, and accelerate ROI by identifying problems before they occur.
• Thermal Performance Software (TSM) Software for thermal performance monitoring, heat rate analysis, and steam turbine efficiency tracking at power generation facilities, supporting recovery of electrical output and identification of performance optimization opportunities.
• Data Validation and Reconciliation (DVR) Process monitoring methodology and modeling service that reduces uncertainty in performance monitoring to enable better decision-making, power recovery, and uprate processes to increase plant output beyond current license limits.
• IDDEAL Software Suite Software platform consolidating regulatory requirements, plant component data, and examination programs for scheduling and tracking nuclear engineering work, particularly ASME Section XI Inservice Inspection and O&M Code Inservice Testing programs.
• Virtual Commissioning Simulation-based testing of plant changes before implementation to avoid downtime, reduce risk, and save revenue during actual commissioning, using GSE's high-fidelity plant simulators to identify logic, sensor, and control system issues prior to plant implementation.
• Training Courses Engineering, inspection, and thermal performance training courses providing CEU credits and PDH hours for professional development, covering operator training, engineering programs, thermal performance, and certification preparation for power and energy industry professionals.
• ASME Code Programs Engineering programs for compliance with ASME Boiler and Pressure Vessel Code requirements, including Section XI for nuclear facilities, Balance of Plant, Equipment Qualification, and regulatory-driven program support for major nuclear operators.
• ASME Section XI Programs Inservice Inspection (ISI) and Inservice Testing (IST) programs ensuring compliance with nuclear power plant safety and operational codes, including program management, examination scheduling, and regulatory documentation.
• License Renewal Services License and subsequent license renewal support, aging management, and regulatory services for nuclear power plant operators preparing for and executing license extensions.

Quantifiable outcome

• Recovered more than 20 megawatts of carbon-free electrical output across a nuclear fleet through thermal performance and DVR optimization
• +5 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Five partnerships are on record, tiered minor and core.

• Lancaster UniversityminorStrategic or Co-development Partner · 16 June 2026GSE supports Lancaster University with a Generic Pressurized Water Reactor (GPWR) simulator for nuclear education. The £2 million simulator, funded by the Office for Students, is the first of its kind in the UK and is highly reconfigurable, simulating PWRs, SMRs, and fusion reactors. It will support teaching across nuclear engineering and cyber security disciplines to address nationally critical skills gaps aligned with the UK's Modern Industrial Strategy. The facility will be ready for student use from autumn.
• Hadron EnergycoreStrategic or Co-development Partner · 12 June 2026Hadron Energy, a newly public company developing the Halo Micro-Modular Reactor, selected GSE Solutions to develop a full-scope, high-fidelity training simulator for its reactor. The agreement marks the expansion of their relationship into a strategic alliance. The simulator is a regulatory requirement for commercial nuclear operation and will be used for Hadron's first reactor deployment and future commercial units as production scales. The simulator will prepare future operators for NRC licensing exams and day-to-day operations.
• Iddeal Concepts / Iddeal Services / Iddeal SolutionscoreOthers · 19 January 2026GSE Solutions acquired Iddeal Concepts, Iddeal Services, and Iddeal Solutions in January 2026, expanding its nuclear engineering program capabilities with expertise in ASME Section XI Inservice Inspection and O&M Code Inservice Testing programs. The deal includes the IDDEAL Software Suite, which integrates regulatory requirements, plant components, and examination programs for scheduling and tracking engineering work. Key leadership and technical experts remain in place, and Iddeal operates under GSE with no disruption to existing projects. GSE President and CEO Ravi Khanna stated the acquisition deepens relationships with major U.S. nuclear operators and adds a specialized talent base and technology foundation.
• NuScale PowercoreStrategic or Co-development Partner · 30 June 2025GSE Solutions supports NuScale Power's advances in hydrogen production using simulation. NuScale Power is a leading SMR company developing small modular reactors and pursuing hydrogen production applications. The partnership demonstrates GSE's expanding role in supporting next-generation nuclear technology development.
• Emerson Process ManagementcoreChannel Partner/ Reseller/ DistributorGSE delivered an operator training simulator (OTS) to PETRONAS Bintulu LNG Complex through its partnership with Emerson Malaysia. Emerson was named the main automation contractor by JGC (the project's EPC contractor), and GSE served as a specialist simulation provider delivering the full OTS scope using JPro process simulation software. The partnership enables control system validation and operator training ahead of plant commissioning.

Scale indicators10 records

Recent moves7 records

Expansion highlights12 records

Direct peers

• L3Harris Technologies (MAPPS / Power Services): Long-standing direct competitor in high-fidelity full-scope nuclear and power-plant simulators. Both companies compete for major utility simulator contracts and serve similar NRC-regulated operator-training requirements.
• Curtiss-Wright (Western Services / Nuclear division): Provides nuclear simulation, engineering, and plant digital services comparable to GSE's full-scope simulator and engineering program offerings, often competing head-to-head for U.S. nuclear utility contracts.

Broad incumbents

• Westinghouse Electric Company: Large nuclear plant OEM and service provider that bundles simulators, engineering programs, and digital offerings within a much broader portfolio including fuel, services, and new reactors.
• Framatome: Global nuclear services and fuel provider offering engineering, digital, and training services that overlap with GSE's nuclear engineering programs and simulator-related services.
• AVEVA (Schneider Electric): Provider of industrial process simulation and digital twin platforms used in power and process plants, competing in adjacent operator-training and engineering analysis use cases with broader software portfolios.
• Honeywell Connected Plant: Major process automation vendor offering simulation, training, and digital twin tools across power and process industries, including operator training systems that overlap with GSE's EnVision and full-scope simulator scope.
• Emerson (AspenTech): Industrial automation and process simulation player with whom GSE has partnered on PETRONAS LNG; AspenTech's DMCplus and related simulation tools compete for virtual commissioning and operator training workloads.

Emerging players

• Mirion Technologies: Specializes in radiation measurement, nuclear monitoring, and digital solutions for nuclear operators — a narrower slice of the same nuclear customer base where GSE sells simulators and engineering programs.

Others

• Rolls-Royce SMR: SMR developer that will require qualified training simulators for its fleet and is part of the broader advanced-reactor ecosystem GSE is positioning for via NuScale and Hadron engagements.
• NuScale Power: Leading SMR company partnering with GSE on hydrogen-production simulation; a current customer and ecosystem participant rather than direct competitor, but central to GSE's SMR growth thesis.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/gse-systems
• Xx.com/gsesystems
• Facebookfacebook.com/gsesystems

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries1 record

Funding overview

Funding rounds2 records

Investors2 records

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

M&A9 records

Investments

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

Frequently asked questions about GSE Solutions