Holtec International

What Holtec International does

Holtec International is a privately held nuclear technology and engineering company founded in 1986 by Dr. Kris Singh, headquartered in Camden, New Jersey, with operations spanning 18 countries across five continents and 501-1,000 employees. The company operates a vertically integrated nuclear business built around three product lines: (1) spent fuel storage and transport systems (HI-STORM dry casks, HI-STAR transport casks, Multi-Purpose Canisters, HI-TRAC transfer systems, and HI-SAFE waste storage) that are deployed at over 140 nuclear plants globally, with every BWR rack in the US since 1986 and every PWR rack since 1994 bearing a Holtec design; (2) turnkey nuclear plant decommissioning services through Holtec Decommissioning International (HDI), currently executing projects at Pilgrim, Indian Point, Oyster Creek, and Palisades; and (3) the SMR-300, a 300 MW pressurized water small modular reactor with passive safety systems and air-cooled condenser capability designed for arid-environment deployment, currently advancing through regulatory milestones in the US and UK with first deployment planned at Palisades.

The business model combines hardware sales (cask systems, heat transfer equipment from a 700,000+ sq ft manufacturing facility in East Pittsburgh, PA), professional services (decommissioning, engineering consulting), and forward-looking licensing/royalty revenue from SMR-300 deployment. Revenue is generated through direct enterprise sales to nuclear utilities and government agencies, supplemented by strategic channel partnerships — most notably Hyundai Engineering & Construction as global construction partner, EDF Energy in the UK, Larsen & Toubro in India, and regional partners for international market access. Government funding has become a major capital source, including a $1.52 billion DOE loan (September 2024) and $400 million DOE grant (December 2025) for the Palisades restart and Pioneer SMR-300 deployment, complemented by state-level partnerships in Michigan, Utah, and emerging markets including Rwanda and India.

Holtec's competitive position rests on a regulatory monopoly in US spent fuel storage infrastructure, a portfolio of 170+ patents held by the CEO, proprietary materials (Metamic neutron absorber manufactured by subsidiary Orrvilon), and deep technical leadership including National Academy of Engineering and ASME Fellows. The company is now transitioning from a fuel-management and decommissioning specialist to a full-spectrum nuclear lifecycle provider, with major international SMR-300 deployments announced for the UK (1.3 GW at Cottam with EDF), Rwanda (up to 5 GW), Utah (Green River, 600-1,200 MW), and Michigan (Palisades Pioneer 1 & 2), positioning itself to capture a meaningful share of the global small modular reactor buildout over the coming decade.

Name

Holtec International

Legal name

Holtec International

Website

https://holtecinternational.com

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Holtec International is a privately held, vertically integrated nuclear technology company that designs and manufactures spent fuel storage systems, provides turnkey decommissioning services, and is developing the SMR-300 small modular reactor for global deployment, serving nuclear utilities and government agencies across 18 countries.

Ownership category

akta.pro rank

Product category

Nuclear Energy Equipment and Engineering Services

NAICS

Power Boiler and Heat Exchanger Manufacturing (332410), Nuclear Electric Power Generation (221113)

SIC

Wholesale-Industrial Machinery & Equipment (5084)

akta.pro primary industry

Dry Cask Storage Systems (Design, Fabrication & Supply) (EUAKAHAB)

akta.pro secondary industries

Independent Spent Fuel Storage Installation (ISFSI) Development, Licensing & Operations (EUAKAHAC), Spent Fuel Transportation (Casks, Rail/Road/Sea Logistics & Security) (EUAKAHAD), Transport & Storage Cask Testing, Certification & Maintenance (EUAKAHAE), Spent Fuel Management Engineering, Consulting & Digital Tools (Thermal/Shielding/Criticality, QA) (EUAKAHAL), Spent Fuel Management & Interim Storage (EUACADAL)

Keywords

• Nuclear fuel storage systems
• Small modular reactors
• Nuclear plant decommissioning
• Heat transfer equipment
• Nuclear waste management

Headquarters

HQ city

Jupiter

HQ country

United States

HQ region

North America

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Nuclear Plant Decommissioning: Turnkey decommissioning services for nuclear plants including engineering, site construction, security, fabrication, and pool-to-pad loading services. Currently decommissioning Pilgrim, Indian Point, Oyster Creek, and Palisades sites.
2. Nuclear Fuel & Waste Management Systems: Sale of dry storage casks (HI-STORM, HI-STAR), wet storage racks, transfer casks (HI-TRAC), and multi-purpose canisters. Includes ongoing equipment supply and loading services to utility clients.
3. Small Modular Reactor (SMR-300) Deployment: Licensing and deployment of SMR-300 reactors globally. First deployment planned at Palisades site in Michigan (Pioneer 1 & 2) with international expansion to UK, Rwanda, India, and Utah.
4. Heat Transfer Equipment: Custom engineered tubular heat exchangers, pressure vessels, surface condensers, feedwater heaters, and air-cooled condensers for power generation, petrochemical, and chemical industries.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels6 records

Core offering

Holtec International manufactures and supplies engineered equipment and integrated services for the global nuclear energy industry. Its core offerings include small modular reactors (SMR-300 and SMR-160), dry cask spent fuel storage and transport systems (HI-STORM, HI-STAR, Multi-Purpose Canisters, HI-TRAC), wet fuel storage racks, heat transfer equipment, and comprehensive nuclear plant decommissioning and restart services. The company operates turnkey contracts with nuclear utilities and government agencies worldwide, backed by vertically integrated manufacturing across U.S. facilities in Pennsylvania, Ohio, and New Jersey.

Product overview

Holtec International is a diversified nuclear technology and engineering company offering an integrated portfolio of products and services for the nuclear energy industry. The company's offerings center around three core areas: (1) Small Modular Reactors - including the SMR-300 (300+ MW pressurized water reactor with passive safety systems) and SMR-160; (2) Nuclear Fuel & Waste Management - encompassing the complete HI-STORM, HI-STAR, HI-TRAC, HI-SAFE dry storage systems, Multi-Purpose Canisters, and wet fuel storage racks; and (3) Clean Energy Technologies - including Green Boiler thermal energy storage and HI-THERM concentrated solar power. The company also provides comprehensive services including decommissioning (via Holtec Decommissioning International), manufacturing, civil construction, and engineering consulting. With manufacturing facilities in Pennsylvania, Ohio, and New Jersey, Holtec serves nuclear operators across the Americas, Europe, Asia, and Africa, positioning itself as a turnkey supplier for nuclear plant lifecycle needs.

Differentiator

Problem solved

Functional benefit

Brands

• HI-STAR: Dual purpose storage and transport cask system for spent nuclear fuel
• HI-STORM
• HI-SAFE
• HI-TRAC
• HI-KOOL
• HI-THERM
• SMR-300
• SMR-160
• Green Boiler
• HI-POWER
• Metamic
• DREAM

Products and services

• SMR-300 Small Modular Reactor Holtec's flagship 300 MW pressurized water small modular reactor featuring passive safety systems and an air-cooled condenser option that enables deployment in arid and water-constrained environments; designed for factory-built standardization to enable faster construction.
• SMR-160 Small Modular Reactor Advanced 160 MW small modular reactor design developed by Holtec featuring walk-away safe passive safety systems; technology under development with expected first deployment targeting 2029.
• HI-STORM Dry Storage System Vertical ventilated module (VVM) system for dry storage of spent nuclear fuel in Multi-Purpose Canisters (MPCs); includes the underground HI-STORM UMAX variant providing enhanced physical protection against terrorism. Deployed across more than half of the U.S. installed nuclear base.
• HI-STAR Transport System Dual-purpose dry storage and transport cask system for spent nuclear fuel and high-level waste; certified for land and sea transport and used by SKB (Sweden) for Oskarshamn, Forsmark, and Ringhals plant spent fuel shipments.
• HI-STORE CISF Consolidated Interim Storage Facility Consolidated Interim Storage Facility technology for large-scale centralized storage of spent nuclear fuel using the underground HI-STORM UMAX storage system; designed for interim storage pending permanent repository availability.
• HI-TRAC Transfer Cask System Transfer cask system for transporting Multi-Purpose Canisters from spent fuel pools and for inter-cask MPC transfer during ISFSI loading operations; available in 100-ton and 125-ton lifting capacity designs.
• HI-SAFE Non-Fuel Waste Storage System Storage system for on-site storage of Class B, Class C, and Greater-Than-Class-C non-fuel radioactive waste generated during nuclear plant operation and decommissioning.
• Multi-Purpose Canisters (MPC) Stainless-steel seal-welded confinement system for storage, transportation, and eventual disposal of spent nuclear fuel; honeycomb geometry fuel basket maximizes structural strength and heat rejection with complete interchangeability between storage, transport, and disposal systems.
• Wet Fuel Storage Systems High-density spent fuel storage racks for wet storage in nuclear reactor pools; available in anchored, freestanding, and quasi-freestanding configurations with Metamic neutron absorber for BWR and PWR reactors.
• Air-Cooled Condensers (HI-KOOL) Induced draft air-cooled condenser system for power plants that enables operation in water-constrained environments; critical enabling technology for SMR-300 deployment in arid regions such as Utah.
• Water-Cooled Condensers Main steam surface condensers for power generation plants, part of Holtec's heat transfer equipment portfolio serving nuclear and fossil power plants.
• Feedwater Heaters Heat exchange equipment for preheating feedwater in nuclear and fossil power plants, improving thermal efficiency of power generation cycles.
• Heat Exchangers Custom-engineered tubular heat exchangers and pressure vessels for power generation, petrochemical, and chemical industries.
• Green Boiler Technology Patented thermal energy storage technology to convert retiring coal-fired plants into energy storage and on-demand clean power delivery plants.
• HI-THERM Hybrid Concentrated Solar Power Hybrid Concentrated Solar Power plant technology that can be co-located with SMR-300 for increased power generation and operational resiliency.
• Palisades Restart Services Comprehensive reactor restart services for Palisades Nuclear Power Plant in Michigan, including refurbishment, regulatory compliance, and eventual SMR-300 deployment; this represents the first-ever restart of a decommissioned commercial U.S. nuclear reactor.
• Nuclear Plant Decommissioning Services Complete nuclear plant decommissioning using Holtec's Decommissioning Management Model, including spent fuel management, reactor segmentation with HI-CUT technology, and site restoration; turnkey execution completing decades sooner than industry-standard SAFSTOR approach. Active sites include Pilgrim, Indian Point, Oyster Creek, and Palisades.
• Manufacturing Services State-of-the-art heavy manufacturing at the Holtec Manufacturing Division (HMD) in East Pittsburgh, PA occupying 700,000+ square feet, producing nuclear-grade equipment including storage casks, heat exchangers, and pressure vessels.
• Civil Construction Services Construction services for nuclear plant sites including ISFSI pad construction, infrastructure development, and site preparation.
• Site Services On-site engineering and technical services including pool-to-pad loading operations, fuel transfer, and decommissioning support delivered at customer nuclear plant sites.
• Engineering and Consulting Services Design, analysis, and consulting services for complex nuclear systems including criticality analysis, thermal-hydraulics, structural mechanics, and licensing support.
• Metamic Neutron Absorber Material Proprietary porosity-free metal matrix composite of aluminum and boron carbide for reactivity control in high-density fuel storage racks and dry storage casks; manufactured exclusively by Holtec subsidiary Orrvilon, providing 20% greater storage capacity than peer products.
• HI-TRAN Heavy Load Hauler Heavy load transportation system for moving large nuclear components and casks within plant sites and across facilities.
• HI-LIFT Davit Crane Specialized davit crane for nuclear plant operations including cask handling and component lifting.
• Forced Helium Dehydrator Specialized helium-based dehydrator system for nuclear plant applications.
• HERMIT Technology Holtec innovative technology for specialized nuclear plant applications.
• Variable Elevation Cask Pedestal (VECASP) Variable elevation cask pedestal system supporting cask handling operations during ISFSI loading and spent fuel management.

Quantifiable outcome

• Every BWR rack installed in US since 1986 and every PWR rack since 1994 is a Holtec design
• +4 more outcomes

Named customers13 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Eleven partnerships are on record, tiered core and strategic.

• NTPC (India)coreStrategic or Co-development Partner · 1 June 2026Advanced discussions with India's largest integrated power generator for partnership on SMR-300 deployment. NTPC targeting 30 GW of nuclear capacity by 2047 as part of India's 100 GW nuclear roadmap. Partnership expected to formalize following India's SHANTI Act enabling private participation.
• Rwanda Atomic Energy BoardstrategicStrategic or Co-development Partner · 26 May 2026Comprehensive development agreement signed at NEISA 2026 to deploy SMR-300 reactors with potential capacity of up to 5 GW. Part of Rwanda's ambition to source over 60% of electricity from nuclear by 2050.
• Blue Castle HoldingscoreStrategic or Co-development Partner · 1 May 2026Joint venture to revive the dormant Blue Castle nuclear project in Green River, Utah, deploying 2-4 SMR-300 pressurized water reactors (600-1,200 MW). Project has 19-year history including water rights litigation resolved in 2016.
• Fulcrum Point HoldingscoreStrategic or Co-development Partner · 1 May 2026Joint venture partner with Blue Castle Holdings advancing Green River Advanced Nuclear Project through site development, licensing, and eventual reactor deployment using SMR-300 technology. Operating through Hi Tech Solutions entity.
• Hi Tech Solutions LLCstrategicStrategic or Co-development Partner · 18 November 2025Partnership with Utah and Holtec to launch Mountain West's first comprehensive nuclear energy ecosystem in Brigham City. Develops SMR manufacturing hub and workforce training center as part of Project Crossroads.
• Larsen & Toubro (L&T)strategicTechnology or Integration · 3 November 2025MoU signed for design and build solutions for Heat Transfer Equipment in nuclear and thermal power plants. Combines L&T's manufacturing capabilities with Holtec's design expertise for advanced thermal solutions supporting global energy transition.
• EDF Energy (UK)coreStrategic or Co-development Partner · 15 September 2025Joint proposal to UK Government for deploying up to four SMR-300 units at former Cottam coal power station site in Nottinghamshire (~1.3 GW capacity). Companies signed Heads of Terms to establish joint venture advancing the project under UK's Advanced Nuclear Framework.
• Holtec AsiacoreTechnology or Integration · 1 March 2025India subsidiary that partnered with NPCIL to co-produce and deliver spent fuel management components (Multi-Purpose Transport Cask and high-density wet storage modules) for Kudankulam Nuclear Plant. Executing technology transfer arrangements with Indian manufacturers.
• Hyundai Engineering & Construction (Hyundai E&C)coreStrategic or Co-development Partner · 22 November 2021Strategic partnership for turnkey supply of SMR-160/SMR-300 nuclear reactors globally. Hyundai serves as lead construction company for Palisades Pioneer 1 & 2 project, forming a technical advisory committee with ~140 nuclear experts from 71 companies across 22 countries. Accord signed October 2022 to accelerate completion of SMR balance of plant design.
• PSEG PowerstrategicStrategic or Co-development Partner · 9 September 2013Deepened commitment to SMR-160 development through expanded partnership with PSEG Power for small modular reactor commercialization.
• Tennessee Valley Authority (TVA)coreImplementation/ SI/ Consulting Partner · 12 November 201210-year fleet-wide contract for on-site dry storage of used nuclear fuel including Watts Bar dry cask storage program, and continuing supply to Browns Ferry, Sequoyah plants.

Scale indicators13 records

Recent moves6 records

Expansion highlights7 records

Direct peers

• Westinghouse Electric Company: Westinghouse is a direct peer across both nuclear fuel services and SMR development — its AP300 small modular reactor competes head-to-head with Holtec's SMR-300, and Westinghouse also supplies spent fuel racks, transport casks, and reactor services to global utilities. Both companies target the same hyperscaler and utility customers for new build and have U.S. DOE backing for first-of-a-kind SMRs.
• BWX Technologies (BWXT): BWXT is a direct peer in nuclear component manufacturing — supplying nuclear fuel, components, and engineering services to U.S. utilities and the U.S. Navy. Like Holtec, BWXT fabricates heavy nuclear hardware, holds NRC licenses, and is increasingly positioned in the advanced reactor / microreactor supply chain, making it a relevant comparable for manufacturing capability and government contracting.
• GE Hitachi Nuclear Energy: GE Hitachi is a direct peer in SMR development with the BWRX-300, a 300 MW boiling water SMR that targets the same utility and data center customers as Holtec's SMR-300. GE Hitachi also provides nuclear fuel services and reactor services globally, overlapping with Holtec's spent fuel and decommissioning offerings.
• NAC International: NAC International is a direct peer in spent fuel storage and transport cask systems (NAC-STC, MAGNASTOR), competing with Holtec's HI-STORM and HI-STAR product lines for U.S. utility and international cask orders. Both companies provide loading services and licensing support.
• NuScale Power: NuScale is a direct peer in the SMR market with its VOYGR light water SMR design, targeting the same utility and hyperscaler customers as Holtec's SMR-300. Both companies are pursuing NRC design certification and competing for DOE and international SMR deployment projects.
• Rolls-Royce SMR: Rolls-Royce SMR is a direct peer developing a 470 MW PWR-based SMR for the UK and global markets. With UK regulatory progress and government backing, it competes directly with Holtec's SMR-300 for British and international deployment contracts.

Broad incumbents

• Curtiss-Wright Corporation: Curtiss-Wright is a broad incumbent in nuclear-grade equipment manufacturing (pressure vessels, valves, reactor components) and defense engineering services, with an installed base across operating reactors comparable in scale to Holtec's nuclear services footprint.
• Orano: Orano (formerly Areva) is a broad incumbent providing nuclear fuel cycle services, spent fuel transport and storage (TN International casks), decommissioning, and reactor services globally. Orano's cask business (TN-12, TN-17) and decommissioning services directly overlap with Holtec's HI-STAR and HDI offerings.

Emerging players

• X-energy: X-energy is an emerging SMR developer with its Xe-100 high-temperature gas reactor, pursuing DOE Advanced Reactor Demonstration Program funding alongside Holtec. While targeting a different reactor technology, X-energy competes for the same hyperscaler data center PPAs and government deployment programs.
• TerraPower: TerraPower is an emerging advanced reactor developer (Natrium sodium-cooled fast reactor) backed by Bill Gates. While focused on a different reactor technology, TerraPower competes with Holtec for hyperscaler PPAs, DOE advanced reactor funding, and global new-build markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/holtecintl
• YouTubeyoutube.com/channel/UC76KA6aBJ3lYmbsc5uSBXaw
• Facebookfacebook.com/holtecinternational
• LinkedInlinkedin.com/company/holtec-international

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Subsidiaries21 records

Funding overview

Funding rounds3 records

Investors3 records

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 Holtec International