Nuclear waste management focuses on the safe handling, treatment, and disposal of radioactive materials. This critical industry comprises companies engaged in a variety of functions, including waste processing, storage solutions, and decommissioning services. As the global demand for nuclear energy grows, the need for effective waste management systems becomes increasingly paramount. Innovative approaches are being explored, such as geological repositories and specialized recycling methods. Industry leaders are investing in research to improve safety protocols and environmental sustainability, ensuring that future generations are safeguarded from the potential hazards of nuclear waste.


The nuclear waste management sector features a range of companies, from large corporations employing thousands to smaller firms with specialized expertise. Many are headquartered in Europe and North America, showcasing a rich history that dates back several decades. Founded between the 1940s to the 2000s, these companies focus on services such as radioactive waste treatment, facility decommissioning, and safety consultancy. Significant players like Areva and Deep Isolation utilize innovative technology and rigorous safety standards to address the challenges of nuclear waste.


Read on to explore the top nuclear waste management companies.


Top 28 Nuclear Waste Management Companies


1. Areva

  • Website: areva.com
  • Ownership type: Private
  • Headquarters: La Défense, Île-De-France, France
  • Employee distribution: Finland 55%, France 26%, Germany 9%, Other 10%
  • Founded year: 2001
  • Headcount: 10001+
  • LinkedIn: areva-co

Areva S.A., now operating under the name Orano, is a prominent nuclear energy company based in La Défense, Île-De-France, France. Founded in 2001, Areva specializes in the entire nuclear fuel cycle, which includes uranium mining, fuel fabrication, and waste management. The company provides a range of services to businesses and organizations in the energy sector, focusing on engineering, maintenance, and recycling. Areva is particularly noted for its leadership in the recycling of used nuclear fuel, which is a critical aspect of nuclear waste management. With a commitment to innovation and sustainability, Areva aims to ensure safe and efficient operations for its clients while addressing the challenges of nuclear waste. The company employs over 11,000 people across various locations, with a significant presence in Finland, France, and Germany.


2. Deep Isolation

  • Website: deepisolation.com
  • Ownership type: Venture Capital
  • Headquarters: Berkeley, California, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: Other (Grant), $4.9M, November 2022
  • Founded year: 2016
  • Headcount: 11-50
  • LinkedIn: deep-isolation

Deep Isolation, based in Berkeley, California, is a nuclear waste management company that specializes in innovative disposal solutions for spent nuclear fuel and high-level waste. Founded in 2016, the company has developed a unique approach that includes directional borehole disposal, which allows for deep geological isolation of nuclear waste. Their operations involve conducting feasibility studies, designing repositories, and engaging with local communities to ensure that their solutions align with public values and safety standards. Deep Isolation collaborates with various industry partners to enhance their capabilities and has received $4.9 million in funding as of November 2022, reflecting investor confidence in their approach to nuclear waste management.


3. NUKEM Technologies Engineering Services GmbH


NUKEM Technologies Engineering Services GmbH, based in Karlstein Am Main, Bavaria, Germany, is a nuclear engineering firm with a rich history dating back to its founding in 1960. The company specializes in the management of radioactive and special waste, providing essential consulting services to businesses and organizations within the nuclear sector. NUKEM's portfolio includes comprehensive solutions for the decommissioning of nuclear facilities, ensuring that these processes are conducted safely and in compliance with regulatory standards. Their engineering services are designed to address the complex challenges of waste handling and facility operations. With a workforce of approximately 92 employees, NUKEM Technologies has established itself as a reliable partner in the nuclear industry, focusing on innovative approaches to waste management and environmental protection.


4. Cavendish Nuclear

  • Website: cavendishnuclear.com
  • Ownership type: Private
  • Headquarters: Birchwood, England, United Kingdom (UK)
  • Employee distribution: United Kingdom (UK) 100%
  • Founded year: 2000
  • Headcount: 5001-10000
  • LinkedIn: cavendish-nuclear

Cavendish Nuclear, founded in 2000 and based in Birchwood, England, is a private nuclear services provider that operates under the Babcock International Group. With a workforce of around 5,000 employees, the company specializes in engineering and consultancy across the Clean Energy, Defence, and Civil Decommissioning sectors. Cavendish Nuclear plays a pivotal role in decommissioning redundant nuclear facilities, ensuring safety and compliance in nuclear activities. Their services extend to waste management, where they have developed innovative solutions for characterizing and retrieving nuclear waste, significantly reducing costs and uncertainties. The company has been involved in major projects, including the retrieval of waste from the Berkeley Active Waste Vaults and the Pile Fuel Cladding Silo at Sellafield. Their commitment to sustainability and safety is evident in their operations, which support both UK and international customers in managing nuclear legacies and contributing to net-zero commitments.


5. Belgoprocess

  • Website: belgoprocess.be
  • Ownership type: Private
  • Headquarters: Dessel, Flanders, Belgium
  • Employee distribution: Belgium 100%
  • Founded year: 1984
  • Headcount: 201-500
  • LinkedIn: belgoprocess

Belgoprocess, established in 1984 and based in Dessel, Belgium, is a private company dedicated to nuclear waste management. It specializes in the processing, conditioning, and storage of radioactive waste, as well as the dismantling of decommissioned nuclear facilities. With a workforce of approximately 247 employees, Belgoprocess plays a crucial role in ensuring the safe handling and disposal of hazardous materials generated by the nuclear energy sector. The company operates under the auspices of NIRAS, the Belgian National Agency for Radioactive Waste and Enriched Fissile Materials, which underscores its importance in the national framework for nuclear waste management. Belgoprocess has developed a reputation for its expertise in transforming radioactive waste into stable end products, ready for storage or disposal. Its activities extend beyond Belgium, as the company engages in international projects, reflecting its capability and commitment to addressing global nuclear waste challenges.


6. KTE Kerntechnische Entsorgung Karlsruhe


KTE Kerntechnische Entsorgung Karlsruhe GmbH, established in 2017, is a private company based in Eggenstein-Leopoldshafen, Germany. It specializes in nuclear waste management and the decommissioning of nuclear facilities. KTE is responsible for the dismantling of decommissioned nuclear research and prototype plants at the Karlsruhe Institute of Technology (KIT) Campus North. The company handles all tasks related to the disposal of radioactive waste, ensuring that materials are processed into storage-ready forms. KTE operates Germany's largest interim storage facility for low- and intermediate-level radioactive waste. The company is primarily funded by the Federal Ministry of Education and Research and the Ministry of Economic Affairs, Labor and Tourism of Baden-Württemberg, reflecting its importance in the national nuclear waste management strategy. KTE's commitment to safety and environmental standards is evident in its operations, which include waste treatment and interim storage, as well as ongoing projects aimed at the safe dismantling of nuclear facilities.


7. Waste Control Specialists

  • Website: wcstexas.com
  • Ownership type: Corporate
  • Headquarters: Dallas, Texas, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: January 2018
  • Founded year: 1994
  • Headcount: 51-200
  • LinkedIn: wcstexas

Waste Control Specialists (WCS), founded in 1994 and based in Dallas, Texas, is a waste management company that focuses on the treatment, storage, and disposal of low-level radioactive waste (LLRW). The company serves a variety of sectors, including nuclear energy and healthcare, providing safe and compliant waste management solutions. WCS operates a licensed facility in Andrews County, Texas, which spans 1,338 acres and is strategically located atop a geological formation that enhances safety and containment. They are unique in their capability to handle Class A, B, and C LLRW, making them a critical resource for both commercial and government waste generators. WCS also offers a full suite of services, from waste packaging and transportation to treatment and final disposal, ensuring a streamlined process for their clients. Their commitment to environmental safety is underscored by rigorous monitoring and compliance with state and federal regulations, reinforcing their role as a responsible player in the nuclear waste management industry.


8. Nuclear Waste Partnership, LLC

  • Website: nwp-wipp.com
  • Ownership type: Private
  • Headquarters: Carlsbad, New Mexico, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2011
  • Headcount: 1001-5000
  • LinkedIn: nuclear-waste-partnership-llc

Nuclear Waste Partnership, LLC (NWP), founded in 2011 and based in Carlsbad, New Mexico, is a private company that specializes in nuclear waste management. NWP operates the Waste Isolation Pilot Plant (WIPP), which is the only deep geological repository in the United States designed for the disposal of transuranic waste. This waste primarily comes from the defense sector and includes materials that are radioactive and hazardous. NWP's mission is to provide safe and permanent solutions for nuclear waste disposal, ensuring compliance with environmental regulations and safety standards. The company is a collaboration between Amentum, BWXT, and ORANO, leveraging their combined expertise to manage and operate WIPP effectively. NWP emphasizes core values such as safety, integrity, and continuous improvement, which guide their operations and community engagement efforts. Their workforce is dedicated to maintaining high standards of safety and operational excellence, contributing to the long-term success of nuclear waste management in the U.S.


9. Cyclife

  • Website: cyclife-edf.com
  • Ownership type: Private
  • Headquarters: Paris, Île-De-France, France
  • Employee distribution: France 59%, United Kingdom (UK) 25%, Sweden 12%, Other 3%
  • Founded year: 2016
  • Headcount: 1001-5000
  • LinkedIn: cyclife

Cyclife is a private waste management company based in Paris, France, established in 2016. The firm specializes in the treatment and recycling of radioactive waste, catering primarily to nuclear power plants and industrial facilities. Their services are designed to ensure compliance with stringent safety regulations while minimizing environmental impact. Cyclife offers a range of solutions, including incineration, melting, and mobile treatment options for radioactive materials. The company operates the Centraco facility in Codolet, which is dedicated to the treatment of very low to medium level radioactive waste. With a workforce of around 550 employees, Cyclife has established a significant presence in the nuclear waste management sector, actively contributing to the reduction and safe handling of radioactive waste. Their operations extend beyond France, with a notable presence in the UK and Sweden, reflecting their commitment to addressing the challenges of radioactive waste management on a broader scale.


10. VNS Federal Services

  • Website: vnsfederalservices.com
  • Ownership type: Private
  • Headquarters: Richland, Washington, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2017
  • Headcount: 501-1000
  • LinkedIn: vnsfederalservicesllc

VNS Federal Services, a subsidiary of Veolia Nuclear Solutions, was founded in 2017 and is based in Richland, Washington. The company specializes in nuclear cleanup and waste management services, focusing on engineering solutions, environmental remediation, and advanced waste treatment technologies. VNSFS plays a crucial role in addressing the nuclear waste challenges faced by government entities, particularly the U.S. Department of Energy and the Department of Defense. Their expertise includes decontamination, decommissioning, and the safe management of hazardous waste. VNSFS has developed innovative technologies, such as the GeoMelt process, which effectively stabilizes radioactive waste for disposal. With a workforce of around 500 to 1,000 employees, the company is well-equipped to tackle complex projects and ensure compliance with environmental regulations. Their commitment to safety and efficiency in high-hazard environments further underscores their importance in the nuclear waste management sector.


11. Posiva Oy

  • Website: posiva.fi
  • Ownership type: Private
  • Headquarters: Eurajoki, Satakunta, Finland
  • Employee distribution: Finland 100%
  • Founded year: 1995
  • Headcount: 51-200
  • LinkedIn: posiva-oy

Posiva Oy, established in 1995, is a private company based in Eurajoki, Finland, dedicated to the safe disposal of nuclear waste. The company specializes in research, development, and planning related to nuclear waste management, providing essential expertise to organizations within the nuclear energy sector. Posiva is particularly known for its involvement in the ONKALO project, a deep geological repository designed for the long-term storage of spent nuclear fuel. This facility represents a significant advancement in the field, aiming to ensure the safe containment of nuclear waste for thousands of years. With a workforce of around 80 employees, Posiva also collaborates with numerous subcontractors and consultants, emphasizing the importance of multidisciplinary knowledge in tackling the complexities of nuclear waste disposal. The company is committed to environmental responsibility and safety, making it a vital contributor to Finland's nuclear energy strategy.


12. NAC International

  • Website: nacintl.com
  • Ownership type: Corporate
  • Headquarters: Peachtree Corners, Georgia, United States (USA)
  • Employee distribution: United States (USA) 97%, Switzerland 3%
  • Latest funding: March 2013
  • Founded year: 1968
  • Headcount: 51-200
  • LinkedIn: nac-international

NAC International, founded in 1968 and based in Peachtree Corners, Georgia, is a consulting firm that specializes in nuclear energy solutions. The company provides a comprehensive range of services that include storage technologies, transportation of nuclear materials, and consulting for the nuclear fuel cycle. NAC serves a wide array of clients, including nuclear utilities and government agencies, ensuring that they receive reliable and innovative solutions for managing nuclear fuel and waste. With a strong focus on safety and compliance, NAC has obtained numerous licenses from the U.S. Nuclear Regulatory Commission (NRC) for their storage and transport systems. They have successfully designed and delivered over 600 transportable nuclear fuel storage systems worldwide, showcasing their capability in the field. Additionally, NAC has a history of supporting advanced reactor developers, further solidifying their role in the nuclear industry.


13. Safetec GmbH


Safetec GmbH, based in Heidelberg, Baden-Württemberg, Germany, is a consulting firm established in 1993. The company specializes in radiation protection and nuclear decommissioning, providing a range of services that include nuclear consultancy, project management, and the safe disposal of radioactive waste. With a workforce of around 167 employees, Safetec serves clients primarily from the energy sector and organizations engaged in nuclear technology. Their expertise is crucial for ensuring compliance with safety regulations and managing the complexities associated with nuclear waste. The firm emphasizes a commitment to safety, environmental protection, and sustainability in all its operations, reflecting a responsible approach to nuclear waste management. Safetec's services also extend to the creation of documentation for interim and final storage of radioactive materials, further solidifying their role in the industry.


14. UniTech Services Group, Inc.

  • Website: unitechus.com
  • Ownership type: Private
  • Headquarters: Longmeadow, Massachusetts, United States (USA)
  • Employee distribution: United States (USA) 47%, Netherlands 32%, Canada 12%, Other 9%
  • Founded year: 1957
  • Headcount: 501-1000
  • LinkedIn: unitech-services-group-inc-

UniTech Services Group, Inc., founded in 1957, is a private nuclear services provider based in Longmeadow, Massachusetts. The company has carved out a niche in the nuclear industry, specializing in protective clothing, waste management, and decontamination services. UniTech serves a wide array of clients, including nuclear power plants and government entities, ensuring safety and compliance in handling hazardous materials. Their business model is built around just-in-time inventory and tailored service programs, which adapt to the evolving needs of the nuclear sector. UniTech is notable for being the first licensed provider of radiological laundry in the United States and has expanded its services to include nuclear waste disposal and decommissioning support. They operate a facility in Oak Ridge, Tennessee, which specializes in waste management and BSFR capabilities, allowing them to process and manage contaminated materials efficiently. With a workforce of around 500 employees, UniTech is committed to continuous improvement and innovation in their service offerings, making them a significant player in the nuclear services industry.


15. AVANTech, LLC

  • Website: avantechllc.com
  • Ownership type: Corporate
  • Headquarters: Columbia, South Carolina, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: October 2020
  • Founded year: 1999
  • Headcount: 51-200
  • LinkedIn: avantech-incorporated

AVANTech, LLC, founded in 1999 and based in Columbia, South Carolina, is a wastewater treatment solutions provider with a focus on the commercial nuclear, government, and industrial sectors. The company specializes in engineering and manufacturing systems designed to manage hazardous and radioactive waste effectively. With a commitment to environmental safety and compliance, AVANTech has developed a reputation for delivering innovative and effective solutions. They operate multiple facilities across the United States, including locations in Knoxville, TN, and Richland, WA. AVANTech has successfully completed over one hundred projects both domestically and internationally, addressing critical wastewater issues and contributing to the safe operation of nuclear power plants. Their involvement in high-profile projects, such as the Tank-Side Cesium Removal System at the Hanford Site and the SARRY System at Fukushima, highlights their expertise in nuclear waste management. The company prides itself on customer service and technical excellence, ensuring that their systems are tailored to meet specific project needs.


16. Tmmc


Tmmc, or Toxco Materials Management Center, is a private company based in Oak Ridge, Tennessee, established in 2004. With a workforce of 11 to 50 employees, Tmmc specializes in the management of radioactive waste, offering a range of services that include waste processing, recycling, and logistics support. The company caters to various industries, including nuclear power plants, military branches, universities, and pharmaceutical companies. Tmmc is dedicated to ensuring safe and compliant management of radioactive materials, emphasizing environmental responsibility and cost-effective solutions. Their facility spans over 66,000 square feet, equipped to handle all types of radioactive waste, from small sources to large reactor components. Tmmc has successfully recycled millions of pounds of radioactive materials, showcasing their commitment to sustainability and efficient waste management practices.


17. Spie Sat

  • Website: spie-sat.de
  • Ownership type: Family Owned
  • Headquarters: Worms, Rhineland-Palatinate, Germany
  • Employee distribution: Germany 72%, Italy 28%
  • Founded year: 2002
  • Headcount: 51-200
  • LinkedIn: sat.kerntechnikgmbh

Spie Sat, officially known as SAT Kerntechnik GmbH, is a family-owned company based in Worms, Germany, founded in 2002. With a workforce of approximately 29 employees, the company specializes in nuclear technology services, particularly in waste management, decontamination, and engineering solutions. Spie Sat has built a reputation for its meticulous approach to the safe decommissioning of nuclear facilities and its commitment to environmental protection. The company operates in compliance with stringent safety regulations and environmental standards, serving a range of clients including industrial sectors, research institutions, and organizations in the medical and chemical fields. Their expertise extends across Germany and into other European countries, showcasing their capability to handle complex projects in the nuclear sector.


18. Navarro Research and Engineering

  • Website: navarro-inc.com
  • Ownership type: Corporate
  • Headquarters: Oak Ridge, Tennessee, United States (USA)
  • Employee distribution: United States (USA) 97%, Puerto Rico 3%
  • Latest funding: $258.0M, February 2006
  • Founded year: 1993
  • Headcount: 201-500
  • LinkedIn: navarro-research-and-engineering

Navarro Research and Engineering, Inc. is a corporate entity based in Oak Ridge, Tennessee, founded in 1993. The company specializes in environmental, nuclear, and clean energy solutions, offering a wide range of services to federal agencies. Their expertise includes environmental cleanup, regulatory compliance, and technical support, particularly in the nuclear sector. Navarro has been involved in significant projects such as the Idaho Cleanup Project, which focuses on environmental cleanup and waste management services, and the Carlsbad Technical Assistance, which provides nuclear services and technical support. With a workforce of over 500 employees, Navarro operates nationwide, addressing complex challenges while prioritizing safety and quality in their operations.


19. CCNuclear

  • Website: ccnuclear.ca
  • Ownership type: Private
  • Headquarters: Montreal, Quebec, Canada
  • Employee distribution: Canada 100%
  • Founded year: 2016
  • Headcount: 11-50
  • LinkedIn: ccnuclear

CCNuclear, based in Montreal, Quebec, is a private nuclear services provider established in 2016. The company specializes in the management of radioactive waste, offering a wide array of services tailored to the needs of nuclear facilities. Their expertise spans from preliminary studies and site surveys to the design and implementation of waste handling systems. CCNuclear's team consists of experienced engineers with over a century of cumulative experience in the nuclear sector. They have successfully executed numerous projects related to the retrieval, packaging, and storage of various types of radioactive waste, including spent fuel and operational waste. The company has also developed innovative solutions for decommissioning and has established strategic partnerships to enhance their service offerings. CCNuclear is committed to maintaining high safety standards and delivering quality services to their clients in the nuclear industry.


20. Simco

  • Website: simco-llc.us
  • Ownership type: Private
  • Headquarters: Carlsbad, New Mexico, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2023
  • Headcount: 1001-5000
  • LinkedIn: simco-llc

Simco, officially known as Salado Isolation Mining Contractors, LLC, was founded in 2023 and is based in Carlsbad, New Mexico. The company specializes in nuclear waste management and environmental remediation, primarily through its operation of the Waste Isolation Pilot Plant (WIPP). This facility is the only repository in the U.S. dedicated to the disposal of transuranic waste, which is generated from atomic energy defense activities. Simco's team includes experienced professionals from Bechtel National Inc. and Los Alamos Technical Associates, bringing a wealth of expertise in nuclear operations and environmental cleanup. The company emphasizes safety, quality, and cost-effectiveness in its operations, aiming to be the premier contractor for the U.S. Department of Energy in nuclear waste cleanup. Simco is also committed to community engagement, actively participating in local initiatives and supporting educational programs in the region.


21. NSG Environmental Ltd

  • Website: nsgltd.com
  • Ownership type: Private
  • Headquarters: Chorley, England, United Kingdom (UK)
  • Employee distribution: United Kingdom (UK) 99%, Other 1%
  • Founded year: 1982
  • Headcount: 201-500
  • LinkedIn: nsg-environmental-ltd

NSG Environmental Ltd, based in Chorley, England, has been a prominent player in the nuclear industry since its founding in 1982. With a workforce of approximately 283 employees, the company operates as a private engineering consultancy specializing in nuclear waste management and decommissioning planning. NSG provides a comprehensive range of services, including problem definition, strategy development, research and development, lifecycle engineering design, and integrated waste management. Their expertise is sought after by major organizations such as Sellafield and the Nuclear Decommissioning Authority, highlighting their significant role in the nuclear sector. The company prides itself on its safety culture and commitment to sustainability, ensuring that it addresses the complex challenges associated with nuclear waste management effectively.


22. JSC Techsnabexport

  • Website: tenex.ru
  • Ownership type: Private
  • Headquarters: Moscow, Moscow, Russia
  • Employee distribution: Russia 100%
  • Founded year: 1949
  • Headcount: 11-50
  • LinkedIn: jsc-techsnabexport

JSC Techsnabexport, based in Moscow, Russia, has been operational since 1949. The company specializes in the nuclear energy sector, focusing on the supply of nuclear fuel and the management of spent nuclear fuel and radioactive waste. It serves nuclear power plants and related organizations, ensuring that its services meet stringent safety and environmental standards. Techsnabexport plays a critical role in the nuclear supply chain, particularly in the handling and disposal of radioactive materials, which is essential for maintaining safety in nuclear operations. The company operates entirely within Russia, reflecting its commitment to the domestic nuclear energy landscape.


23. Edgewater Technical Associates, LLC

  • Website: edgewatertech.net
  • Ownership type: Private
  • Headquarters: Oak Ridge, Tennessee, United States (USA)
  • Employee distribution: United States (USA) 98%, Other 2%
  • Founded year: 2003
  • Headcount: 201-500
  • LinkedIn: edgewater-technical-associates

Edgewater Technical Associates, LLC, founded in 2003 and based in Oak Ridge, Tennessee, is a professional services firm that specializes in nuclear and hazardous operations. The company provides a wide range of services, including engineering, environmental remediation, and operational readiness support. They cater to clients such as the U.S. Department of Energy and the commercial nuclear industry in the U.S., U.K., and Canada. Edgewater's expertise is particularly notable in areas like nuclear operations, waste management, and decommissioning activities. With a workforce of approximately 245 skilled professionals, many of whom have over 30 years of experience in nuclear operations, Edgewater is well-equipped to handle complex and high-hazard projects. Their commitment to safety and regulatory compliance is evident in their operational practices, making them a reliable partner in the nuclear waste management sector.


24. Galson Sciences Limited

  • Website: galson-sciences.co.uk
  • Ownership type: Corporate
  • Headquarters: Oakham, England, United Kingdom (UK)
  • Employee distribution: United Kingdom (UK) 86%, France 7%, Angola 7%
  • Latest funding: March 2021
  • Founded year: 1992
  • Headcount: 11-50
  • LinkedIn: galson-sciences-limited

Galson Sciences Limited (GSL), founded in 1992 and based in Oakham, England, is a consultancy and research company that specializes in nuclear decommissioning and radioactive waste management. With a team of around 30 employees, GSL provides a range of expert services to clients in the nuclear sector, focusing on critical areas such as environmental risk assessments, safety studies, and stakeholder engagement. The company is recognized for its strategic analysis and advice on radioactive waste conditioning, packaging, transport, storage, and disposal. GSL has developed a strong track record in criticality safety assessments and has been involved in significant projects related to the management of radioactive materials. Their collaboration with various organizations, including participation in European Commission research projects, highlights their commitment to addressing the challenges in nuclear waste management. GSL operates primarily in the UK but also engages in international projects, showcasing their expertise and influence in the field.


25. Nssi

  • Website: nssihouston.com
  • Ownership type: Private
  • Headquarters: Houston, Texas, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1971
  • Headcount: 11-50
  • LinkedIn: nssi

Nuclear Sources & Services, Inc. (NSSI) is an environmental services company based in Houston, Texas, specializing in the management of hazardous and radioactive waste. Founded in 1971, NSSI has built a solid reputation in the industry, providing comprehensive solutions for waste treatment, storage, and disposal. The company serves a variety of sectors, including government, education, pharmaceuticals, and energy, reflecting its broad operational scope. NSSI operates a fully permitted facility that is recognized for its capability to handle mixed hazardous and radioactive wastes, making it one of only three such facilities in the United States. Their services include low-level radioactive waste management, tritium research and recovery, and the handling of non-hazardous waste. NSSI is committed to maintaining high safety standards and compliance with environmental regulations, ensuring that all waste is managed responsibly. With a team of trained professionals, NSSI also offers consulting services for regulatory communications and license applications, further demonstrating its expertise in the field.


26. Holtec International

  • Website: holtecinternational.com
  • Ownership type: Private
  • Headquarters: Jupiter, Florida, United States (USA)
  • Employee distribution: United States (USA) 88%, India 7%, Other 5%
  • Latest funding: Other (Debt), $1.5B, March 2024
  • Founded year: 1986
  • Headcount: 501-1000
  • LinkedIn: holtec-international

Holtec International, founded in 1986 and based in Jupiter, Florida, is a technology company that operates primarily in the energy sector, with a strong emphasis on nuclear power. The company provides a wide array of products and services tailored to the needs of nuclear power plants and energy companies. Their expertise includes spent nuclear fuel management, decommissioning of nuclear facilities, and the design and manufacturing of heat transfer equipment. Holtec's nuclear fuel and waste management solutions feature advanced systems for dry cask storage and transportation, as well as wet fuel storage systems. They also offer engineering and consulting services, ensuring that their clients can safely and efficiently manage their nuclear operations. Recently, Holtec secured significant funding, amounting to $1.52 billion, which underscores their commitment to innovation and growth in the nuclear sector. Their subsidiary, Holtec Decommissioning International, focuses on the safe and efficient decommissioning of shuttered nuclear power plants, further solidifying their role in nuclear waste management.


27. Orano Canada

  • Website: oranocanada.com
  • Ownership type: Private
  • Headquarters: Saskatoon, Saskatchewan, Canada
  • Employee distribution: Canada 100%
  • Founded year: 1964
  • Headcount: 201-500
  • LinkedIn: oranocanada

Orano Canada, based in Saskatoon, Saskatchewan, has been a prominent entity in the nuclear energy sector since its inception in 1964. The company specializes in uranium exploration, mining, and the recycling of nuclear fuels, serving both energy companies and governmental bodies. With a workforce of approximately 450 employees, Orano Canada operates the McClean Lake mill, which processes high-grade uranium ore. Their expertise extends to the decommissioning of nuclear facilities, where they apply over 50 years of experience in radioactive waste management. Orano Canada emphasizes environmental protection and community engagement, ensuring that their operations are sustainable and socially responsible. They are also involved in initiatives that support education and community development, particularly in regions near their operations.


28. Safety and Ecology Corporation


Safety and Ecology Corporation, also known as Perma-Fix, is a private environmental services company founded in 1991. With a workforce of approximately 201-500 employees, the company operates in the United States and Canada, providing specialized services in nuclear and radiological management, waste treatment, and health physics. Perma-Fix is dedicated to addressing complex waste management challenges for both government and commercial clients, ensuring compliance with environmental regulations. Their facilities are equipped to handle a variety of waste streams, including low-level radioactive waste, and they employ innovative technologies to enhance their service offerings. The company has a solid reputation for managing intricate nuclear projects and is actively involved in numerous high-profile initiatives across the United States and internationally.



Nuclear Waste Management Insights: Key Companies


CompanyHeadquarterSizeFoundedOwnership
ArevaLa Défense, Île-De-France, France10001+2001Private
Deep IsolationBerkeley, California, United States (USA)11-502016Venture Capital
NUKEM Technologies Engineering Services GmbHKarlstein Am Main, Bavaria, Germany51-2001960Corporate
Cavendish NuclearBirchwood, England, United Kingdom (UK)5001-100002000Private
BelgoprocessDessel, Flanders, Belgium201-5001984Private
KTE Kerntechnische Entsorgung KarlsruheEggenstein-Leopoldshafen, Baden-Württemberg, Germany501-10002017Private
Waste Control SpecialistsDallas, Texas, United States (USA)51-2001994Corporate
Nuclear Waste Partnership, LLCCarlsbad, New Mexico, United States (USA)1001-50002011Private
CyclifeParis, Île-De-France, France1001-50002016Private
VNS Federal ServicesRichland, Washington, United States (USA)501-10002017Private
Posiva OyEurajoki, Satakunta, Finland51-2001995Private
NAC InternationalPeachtree Corners, Georgia, United States (USA)51-2001968Corporate
Safetec GmbHHeidelberg, Baden-Württemberg, Germany501-10001993Private
UniTech Services Group, Inc.Longmeadow, Massachusetts, United States (USA)501-10001957Private
AVANTech, LLCColumbia, South Carolina, United States (USA)51-2001999Corporate
TmmcOak Ridge, Tennessee, United States (USA)11-502004Private
Spie SatWorms, Rhineland-Palatinate, Germany51-2002002Family Owned
Navarro Research and EngineeringOak Ridge, Tennessee, United States (USA)201-5001993Corporate
CCNuclearMontreal, Quebec, Canada11-502016Private
SimcoCarlsbad, New Mexico, United States (USA)1001-50002023Private
NSG Environmental LtdChorley, England, United Kingdom (UK)201-5001982Private
JSC TechsnabexportMoscow, Moscow, Russia11-501949Private
Edgewater Technical Associates, LLCOak Ridge, Tennessee, United States (USA)201-5002003Private
Galson Sciences LimitedOakham, England, United Kingdom (UK)11-501992Corporate
NssiHouston, Texas, United States (USA)11-501971Private
Holtec InternationalJupiter, Florida, United States (USA)501-10001986Private
Orano CanadaSaskatoon, Saskatchewan, Canada201-5001964Private
Safety and Ecology CorporationUnited States (USA)201-5001991Private


Want to Find More Nuclear Waste Management Companies?

If you want to find more companies that provide treatment, storage, and decommissioning solutions for nuclear waste you can do so with Inven. This list was built with Inven and there are hundreds of companies like these globally.

With Inven you'll also get to know the company's:

  • Detailed Ownership: Who owns the company? Is it a public or private company? What is the ownership structure?
  • Contact data: Who are the founders and CEO's? What are their emails and phone numbers?
  • Financials: How do these companies perform financially? What are their revenues and profit margins?

...and a lot more!