Nuclear thermal power companies focus on harnessing nuclear reactions to generate electricity efficiently and sustainably. In this sector, organizations vary from large utility providers operating massive reactors to innovative startups creating smaller, modular solutions. Key areas of development include nuclear technology advancements, safety improvements, and waste management strategies. With a growing emphasis on clean and low-carbon energy production, the industry is shifting towards next-generation reactors and alternative fuel sources, like thorium. This evolution underscores a commitment to environmental responsibility while meeting increasing global energy demands.

The companies in this list showcase wide-ranging expertise, from large established entities like Areva, founded in 2001, to innovative newcomers like Kairos Power, established in 2016. Locations span the globe, primarily within Europe and North America, highlighting regional strengths in nuclear technology. Company sizes vary significantly, with most employing over 1,000 individuals. This mix encompasses engineering firms, reactor manufacturers, and energy providers, illustrating an industry positioned for growth and modernization.

Continue reading to explore the top nuclear thermal power companies.

Top 28 Nuclear Thermal Power 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, conversion, enrichment, and the recycling of spent nuclear fuel. The company provides essential services to the energy sector, such as engineering, maintenance, and waste management. With a workforce that spans multiple countries, including Finland, France, and Germany, Areva is committed to advancing nuclear technology while prioritizing safety and sustainability. Their operations not only support the production of nuclear energy but also contribute to the management of nuclear waste, positioning them as a key player in the nuclear thermal power industry.

2. Framatome

• Website: framatome.com
• Ownership type: Private
• Headquarters: Courbevoie, Île-De-France, France
• Employee distribution: France 79%, United States (USA) 11%, Germany 5%, Other 5%
• Latest funding: $223.1M, January 2024
• Founded year: 1958
• Headcount: 10001+
• LinkedIn: framatome

Framatome, founded in 1958 and based in Courbevoie, Île-De-France, France, is a prominent nuclear energy solutions provider. The company specializes in engineering and manufacturing for nuclear power plants, offering a comprehensive suite of services that includes design, maintenance, and digital solutions aimed at enhancing the safety and efficiency of energy operations. With a workforce of over 12,000 employees, Framatome operates in more than 20 countries, contributing to the global nuclear fleet. Their expertise spans various reactor technologies, and they are involved in significant projects, such as the construction of new EPR reactors in France and Finland. In January 2024, Framatome secured funding of approximately €223 million, underscoring their ongoing commitment to innovation and development in the nuclear sector.

3. X-energy

• Website: x-energy.com
• Ownership type: Venture Capital
• Headquarters: Rockville, Maryland, United States (USA)
• Employee distribution: United States (USA) 99%, Other 1%
• Latest funding: March 2025
• Founded year: 2009
• Headcount: 201-500
• LinkedIn: x-energy-llc

X-energy, founded in 2009 and based in Rockville, Maryland, is a nuclear reactor manufacturer that specializes in advanced nuclear energy solutions. The company designs and engineers small modular reactors, notably the Xe-100, which is recognized for its safety features and efficiency. Additionally, X-energy has developed the Xe-Mobile, a mobile reactor designed for remote locations and micro-grids. Their proprietary TRISO-X fuel is engineered to withstand extreme temperatures, enhancing the safety and reliability of their reactors. X-energy's clientele includes utilities and industries seeking sustainable energy solutions to meet increasing demands. The company has also been awarded significant tax credits for its TRISO-X fuel fabrication facility, highlighting its active involvement in the nuclear sector and commitment to innovation.

4. Flibe Energy

• Website: flibe-energy.com
• Ownership type: Private
• Headquarters: Huntsville, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2011
• Headcount: 11-50
• LinkedIn: flibe-energy

Flibe Energy, Inc., based in Huntsville, Alabama, is a private nuclear energy company established in 2011. The firm specializes in the development of advanced thorium fueled molten salt reactors, aiming to provide sustainable energy solutions that address the growing demand for cleaner energy sources. Flibe Energy's innovative technologies focus on enhancing safety and efficiency in energy production. The company is actively involved in research and development, collaborating with institutions like the Savannah River National Laboratory to advance nuclear energy fuel cycle technologies. Their reactor designs, including the Lithium Fluoride Thorium Reactor (LFTR) and the Lithium Fluoride Low Enriched Uranium Reactor (LFLEUR), are designed to optimize energy production while minimizing waste. Flibe Energy's commitment to revolutionizing energy production positions it as a significant player in the nuclear thermal power industry.

5. Bruce Power

• Website: brucepower.com
• Ownership type: Private
• Headquarters: Tiverton, Ontario, Canada
• Employee distribution: Canada 95%, United Kingdom (UK) 5%
• Latest funding: January 2003
• Founded year: 2001
• Headcount: 1001-5000
• LinkedIn: bruce-power

Bruce Power is a nuclear power generation company based in Tiverton, Ontario, Canada. Founded in 2001, it operates the Bruce Nuclear Generating Station, which is one of the largest nuclear facilities in the world. The company is dedicated to providing clean and reliable electricity to the Ontario grid, contributing significantly to the region's energy supply. In addition to power generation, Bruce Power is a prominent supplier of medical isotopes, which are essential for cancer treatments and sterilization of medical devices. The company emphasizes sustainability and community engagement, focusing on innovative energy solutions and long-term planning. Their Life-Extension Program aims to ensure the continued operation of their reactors well into the future, with a commitment to net-zero emissions by 2050. Bruce Power's initiatives reflect a strong alignment with modern energy demands and health care needs, positioning them as a vital entity in the nuclear power sector.

6. Korea Hydro & Nuclear Power (KHNP)

• Website: khnp.co.kr
• Ownership type: Private
• Headquarters: Gyeongju-Si, Gyeongsangbuk-Do, South Korea
• Employee distribution: South Korea 74%, United Arab Emirates 16%, Egypt 5%, Other 5%
• Founded year: 2001
• Headcount: 10001+
• LinkedIn: korea-hydro-%26-nuclear-power

Korea Hydro & Nuclear Power Co., Ltd. (KHNP) is an energy company based in Gyeongju-Si, Gyeongsangbuk-Do, South Korea. Established in 2001, KHNP specializes in nuclear power generation, operating several nuclear power plants across the country. The company plays a crucial role in providing reliable electricity to utility companies and government entities, addressing the increasing demand for sustainable energy solutions. KHNP emphasizes safety and operational efficiency in its operations, ensuring that its facilities meet high standards of safety and reliability. The company also engages in international projects, extending its expertise beyond South Korea. With a workforce of over 12,000 employees, KHNP is a significant contributor to the energy sector, focusing on the development and maintenance of nuclear power infrastructure.

7. Urenco Global

• Website: urenco.com
• Ownership type: Private
• Headquarters: Stoke Poges, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 76%, Germany 13%, Netherlands 8%, Other 3%
• Founded year: 1970
• Headcount: 1001-5000
• LinkedIn: urenco-group

Urenco Global is a private nuclear services company based in Stoke Poges, England, founded in 1970. The company specializes in uranium enrichment and fuel cycle products, playing a vital role in the nuclear industry. With operations across multiple countries, including Germany, the Netherlands, the UK, and the USA, Urenco provides uranium enrichment services that are essential for the production of low carbon electricity. Their technology, particularly gas centrifuge technology, is at the heart of their enrichment process, allowing them to meet international specifications for enriched uranium. Urenco also manages by-products of the enrichment process through their Tails Management Facility, ensuring responsible nuclear stewardship. They supply services to over 50 customers in 19 countries, demonstrating their global reach and commitment to supporting the nuclear power sector. Urenco's focus on sustainability and their transition to net zero by 2040 further underscores their relevance in the industry.

8. Kairos Power

• Website: kairospower.com
• Ownership type: Private
• Headquarters: Alameda, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Grant), $16,000, June 2022
• Founded year: 2016
• Headcount: 201-500
• LinkedIn: kairospower

Kairos Power, founded in 2016 and based in Alameda, California, is a private nuclear energy company dedicated to advancing reactor technology. The firm specializes in the development of small modular reactors (SMRs), particularly the fluoride salt-cooled high-temperature reactor (KP-FHR). This innovative technology is designed to be cost-competitive with natural gas while ensuring a low carbon footprint and high safety standards. Kairos Power operates in multiple states, including California, New Mexico, and Tennessee, where they are establishing research and development facilities. The company has made significant strides in the industry, recently receiving a construction permit from the Nuclear Regulatory Commission for their Hermes demonstration reactor and securing up to $303 million in funding from the U.S. Department of Energy. Their mission is to transform the energy sector by providing clean, affordable, and reliable energy solutions, positioning them as a relevant player in the nuclear thermal power industry.

9. copenhagen atomics

• Website: copenhagenatomics.com
• Ownership type: Venture Capital
• Headquarters: Kastrup, Denmark
• Employee distribution: Denmark 100%
• Latest funding: Other (Grant), $45,000, July 2024
• Founded year: 2014
• Headcount: 51-200
• LinkedIn: copenhagen-atomics

Copenhagen Atomics, founded in 2014 and based in Kastrup, Denmark, specializes in nuclear energy solutions with a particular emphasis on thorium-based molten salt reactors. The company is dedicated to developing innovative energy production methods that are cleaner and more efficient, addressing the pressing global need for sustainable energy. They produce highly purified salts and offer pumped portable molten salt loops, catering to various needs within the energy sector. With a workforce of around 53 employees, Copenhagen Atomics is actively involved in the research and development of its reactor technology, having accumulated over 10,000 days of testing on reactor components. The company has also secured funding, including a recent grant of approximately €45,384 in July 2024, to support its initiatives. Their roadmap includes plans for a 1 MW test reactor by 2026 and aims to deploy commercial thorium reactors by 2029, showcasing their commitment to advancing nuclear technology.

10. Moltex Energy

• Website: moltexenergy.com
• Ownership type: Private
• Headquarters: United States (USA)
• Latest funding: Other (Grant), $792,000, March 2021
• Founded year: 2014
• Headcount: 11-50
• LinkedIn: moltex-energy-llp

Moltex Energy Canada Inc. is a nuclear energy company established in 2014, headquartered in New Brunswick, Canada, with an additional office in Wilmington, Delaware. The company is dedicated to developing advanced reactor technologies, particularly the Stable Salt Reactor – Wasteburner (SSR-W), which aims to address energy demands sustainably while tackling climate change. Moltex Energy is also involved in waste recycling processes, converting existing nuclear waste into fuel for their reactors. They are currently navigating the approval processes in Canada to construct their first reactor for NB Power, with plans to expand into the global market. The company has received funding, including a grant of approximately $792,267 in March 2021, which supports their innovative projects and research efforts in the nuclear sector.

11. Ultra Safe Nuclear

• Website: usnc.com
• Ownership type: Venture Capital
• Headquarters: Seattle, Washington, United States (USA)
• Employee distribution: United States (USA) 42%, South Africa 19%, Canada 14%, Other 26%
• Latest funding: Other (Grant), $150,000, June 2023
• Founded year: 2011
• Headcount: 201-500
• LinkedIn: usnc

Ultra Safe Nuclear Corporation, founded in 2011 and based in Seattle, Washington, is a nuclear energy company that specializes in advanced reactor technologies and fuel solutions. The company is known for its Micro Modular Reactors (MMR) and TRISO particle fuels, which are aimed at providing reliable, zero-carbon energy to industrial clients and research institutions. USNC is actively involved in projects that support decarbonization efforts across various sectors, with a notable focus on small modular reactors that can be deployed in diverse environments. Their recent collaborations include projects in Poland, Finland, and Canada, showcasing their international reach and commitment to innovation in nuclear energy. In June 2023, USNC secured a grant of $150,000, which underscores their ongoing development and engagement in the nuclear sector.

12. Terrestrial Energy

• Website: terrestrialenergy.com
• Ownership type: Venture Capital
• Headquarters: Charlotte, North Carolina, United States (USA)
• Employee distribution: Canada 97%, United States (USA) 3%
• Latest funding: October 2022
• Founded year: 2013
• Headcount: 51-200
• LinkedIn: terrestrial-energy-inc

Terrestrial Energy, founded in 2013 and based in Charlotte, North Carolina, is an energy company that specializes in advanced nuclear reactor technology. The firm is dedicated to providing carbon-free energy solutions, particularly aimed at industrial clients looking for sustainable energy alternatives. Terrestrial Energy focuses on the development of the Integral Molten Salt Reactor (IMSR), a fourth-generation nuclear reactor that promises enhanced safety and efficiency. The company is heavily involved in research and development efforts to meet the increasing demand for clean energy. With a workforce of approximately 67 employees, the majority of whom are located in Canada, Terrestrial Energy is positioned to make significant contributions to the nuclear sector. Their recent activities include partnerships and agreements aimed at advancing the deployment of their technology, showcasing their proactive approach to addressing energy challenges.

13. 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 plays a significant role in the energy sector, particularly in nuclear power. With a workforce of approximately 1,157 employees, Holtec specializes in a range of products and services that cater to nuclear power plants and energy companies. Their offerings include spent nuclear fuel management, decommissioning services, and advanced heat transfer equipment. Holtec is recognized for its innovative solutions, such as the HI-STORM and HI-STAR systems for dry cask storage and transportation of spent fuel. The company is also actively involved in the development of the SMR-300, a small modular reactor designed to enhance safety and efficiency in nuclear energy generation. Holtec's commitment to environmental justice and safety culture further underscores their dedication to responsible nuclear energy practices. Recently, they secured $1.52 billion in funding, which will bolster their capabilities and support their ongoing projects in the nuclear sector.

14. General Atomics

• Website: ga.com
• Ownership type: Venture Capital
• Headquarters: San Diego, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Grant), August 2023
• Founded year: 1955
• Headcount: 10001+
• LinkedIn: general-atomics

General Atomics, founded in 1955 and based in San Diego, California, is a prominent defense contractor and energy technology firm. The company specializes in advanced research and technology development, particularly in nuclear energy and unmanned aircraft systems. General Atomics is dedicated to creating innovative solutions that enhance operational capabilities and promote energy sustainability. Their energy division is actively engaged in pioneering nuclear technologies, including fusion power, which aims to harness the same processes that fuel the sun. They operate the DIII-D National Fusion Facility, a key research facility for fusion energy, and are involved in the international ITER project, which seeks to demonstrate the feasibility of fusion as a large-scale energy source. General Atomics also focuses on developing advanced materials and technologies for nuclear applications, including a recent initiative to create a "Nuclear Fuel Digital Twin" to accelerate testing and qualification of new materials. With over 10,000 employees, the company continues to push the boundaries of energy technology, contributing to both military and civilian energy solutions.

15. Rosenergoatom

• Website: rosenergoatom.ru
• Ownership type: Private
• Headquarters: Moscow, Moscow, Russia
• Employee distribution: Russia 88%, Bangladesh 6%, Turkey 4%, Other 1%
• Founded year: 1992
• Headcount: 10001+
• LinkedIn: rosenergoatom

Rosenergoatom, established in 1992 and based in Moscow, is a prominent energy company specializing in nuclear power generation. As a subsidiary of the state corporation Rosatom, it operates 11 nuclear power plants across Russia, managing a total of 36 energy blocks with a combined capacity exceeding 28.5 GW. The company plays a vital role in ensuring a reliable energy supply, producing both electricity and thermal energy for individual consumers and businesses alike. Rosenergoatom is also involved in international projects, including the construction of nuclear power plants abroad, showcasing its expertise and commitment to advancing nuclear technology. The company emphasizes safety and environmental sustainability in its operations, aligning with global standards in the nuclear energy sector.

16. Last Energy

• Website: lastenergy.com
• Ownership type: Venture Capital
• Headquarters: Washington, D.C., District Of Columbia, United States (USA)
• Employee distribution: United States (USA) 88%, United Kingdom (UK) 5%, Turkey 3%, Other 3%
• Latest funding: Series B, $40.0M, August 2024
• Founded year: 2019
• Headcount: 51-200
• LinkedIn: lastenergy

Last Energy is an energy company based in Washington, D.C., specializing in nuclear energy solutions. Founded in 2019, the company has developed the PWR-20, a small modular reactor designed to generate 20 megawatts of electricity and up to 83 megawatts of thermal energy. This reactor is particularly aimed at industrial customers, providing a reliable and decarbonized energy source. Last Energy operates on a full-service delivery model, managing everything from design to operations, which streamlines project development and enhances efficiency. The company has recently secured $40 million in Series B funding, reflecting strong investor interest in their innovative approach to nuclear energy. Their focus on modular, factory-made reactors allows for quicker deployment and adaptability to various industrial applications, making them a notable player in the nuclear energy sector.

17. Fuel Company TVEL

• Website: tvel.ru
• Ownership type: Private
• Headquarters: Moscow, Moscow, Russia
• Employee distribution: Russia 100%
• Founded year: 1996
• Headcount: 10001+
• LinkedIn: fuel-company-tvel

Fuel Company TVEL, established in 1996 and based in Moscow, Russia, is a prominent nuclear fuel manufacturer. The company specializes in producing and supplying enriched uranium and various nuclear fuel components tailored for a range of reactors. TVEL's clientele includes nuclear power plants and research institutions, which rely on their products for energy generation and scientific research. Operating within the nuclear energy sector, TVEL plays a crucial role in ensuring the availability of essential materials for nuclear reactors. The company is part of the larger Rosatom group, which enhances its capabilities and reach in the nuclear market. TVEL's operations extend beyond Russia, with a significant presence in international markets, supplying nuclear fuel to reactors in multiple countries. Their commitment to innovation is evident in their ongoing projects aimed at developing advanced nuclear fuel technologies, which further solidifies their position in the industry.

18. Rolls-Royce SMR

• Website: rolls-royce-smr.com
• Ownership type: Corporate
• Headquarters: Derby, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 99%, Other 1%
• Latest funding: February 2025
• Founded year: 2021
• Headcount: 501-1000
• LinkedIn: uk-smr-consortium

Rolls-Royce SMR, established in 2021 and based in Derby, England, is a nuclear energy company dedicated to developing small modular reactors (SMRs). The firm aims to provide clean and affordable energy solutions to governments and energy firms worldwide. By utilizing proven nuclear technology, Rolls-Royce SMR focuses on creating a sustainable, low-cost, repeatable, and scalable product that can be deployed globally. The company is currently advancing through the Generic Design Assessment (GDA) process in the UK, which evaluates new nuclear power plant designs for safety and environmental standards. Additionally, Rolls-Royce SMR has secured £210 million in funding from the UK government to support its SMR design, supplemented by private capital. This financial backing underscores the company's commitment to addressing the urgent need for low-carbon energy and its potential to play a significant role in the future of nuclear power generation.

19. Pebble Bed Modular Reactor (PBMR)

• Website: pbmr.co.za
• Ownership type: Private
• Headquarters: Centurion, Gauteng, South Africa
• Founded year: 1999
• Headcount: 51-200
• LinkedIn: pbmr

Pebble Bed Modular Reactor SOC Ltd, established in 1999, is a South African company based in Centurion, Gauteng. The firm specializes in the development and marketing of high-temperature gas-cooled reactors (HTGRs), particularly the Pebble Bed Modular Reactor (PBMR) technology. This innovative reactor design utilizes helium as a coolant and is known for its high efficiency and passive safety features. PBMR aims to provide sustainable energy solutions for electricity generation and process heat applications, catering to energy utilities and industries. The company has been involved in various projects and partnerships, including collaborations with Eskom and other nuclear industry players. Despite facing challenges in commercialization, PBMR continues to advocate for the potential of its technology in both local and international markets, emphasizing its role in reducing greenhouse gas emissions and providing safe, clean energy alternatives.

20. Blykalla

• Website: blykalla.com
• Ownership type: Private Equity
• Headquarters: Stockholm, Stockholm, Sweden
• Employee distribution: Sweden 100%
• Latest funding: Other (Grant), February 2025
• Founded year: 2013
• Headcount: 51-200
• LinkedIn: blykalla

Blykalla, founded in 2013 as a spin-off from the Royal Institute of Technology in Stockholm, Sweden, is a nuclear energy company dedicated to developing small modular reactors (SMRs). With a team of experts in nuclear engineering, Blykalla is focused on creating advanced lead-cooled fast reactors (LFRs) that promise to deliver clean, reliable energy solutions. The company is actively working with global utilities to meet the rising demand for electricity while contributing to a sustainable energy future. Blykalla's ambitious goal is to construct and deploy 1,000 SMRs, which could collectively produce around 500 TWh of clean electricity each year, significantly reducing carbon emissions. Their innovative reactor design, which incorporates a patented aluminum alloyed steel for corrosion resistance, addresses historical challenges associated with lead-cooled reactors. Blykalla's commitment to safety, efficiency, and environmental responsibility positions them as a noteworthy player in the nuclear energy sector.

21. ARC Clean Energy

• Website: arcenergy.co
• Ownership type: Venture Capital
• Headquarters: United States (USA)
• Latest funding: Other (Grant), $7.0M, October 2023
• Founded year: 2006
• Headcount: 11-50
• LinkedIn: arc-clean-energy

ARC Clean Energy, also known as ARC Clean Technology, is a clean energy technology firm based in the United States, founded in 2006. The company is dedicated to developing the ARC-100, an advanced small modular reactor (SMR) designed to deliver carbon-free power. This innovative reactor is positioned to serve utilities and industrial sectors, providing solutions for decarbonization and sustainable energy production. ARC Clean Energy has received significant backing, including a recent $7 million grant from the Canadian government, which underscores its potential in the nuclear energy market. The ARC-100 is designed to be modular and scalable, making it suitable for various applications, including electrical grid support, industrial heat, and hydrogen production. The company is currently collaborating with New Brunswick Power to implement the ARC-100 at the Point Lepreau Nuclear Generating Station, with plans for completion in the early 2030s. This project highlights ARC's commitment to advancing clean energy initiatives and its role in the nuclear power sector.

22. Jimmy

• Website: jimmy-energy.eu
• Ownership type: Venture Capital
• Headquarters: Paris, Île-De-France, France
• Employee distribution: France 100%
• Latest funding: $14.8M, October 2022
• Founded year: 2021
• Headcount: 51-200
• LinkedIn: jimmy-energy

Jimmy Energy, founded in 2021 and based in Paris, is a venture capital-backed company specializing in decarbonized industrial heat. The firm designs and operates thermal generators that leverage nuclear technology to provide industrial clients with a cost-effective alternative to fossil fuels. Their generators house micro nuclear reactors that produce decarbonized heat, which is then adapted for various industrial processes. With a team of experts and a clear vision, Jimmy aims to launch its industrial demonstrator by 2026, marking a significant step in their mission to decarbonize the industry. The company has secured funding of approximately €14.8 million, indicating investor confidence in their innovative approach to nuclear energy. Jimmy's focus on safety and efficiency in nuclear applications positions it as a noteworthy entity in the nuclear thermal power sector.

23. Radiant

• Website: radiantnuclear.com
• Ownership type: Private Equity
• Headquarters: El Segundo, California, United States (USA)
• Employee distribution: United States (USA) 92%, India 6%, Other 2%
• Latest funding: Series C, $100.0M, November 2024
• Founded year: 2019
• Headcount: 51-200
• LinkedIn: r-a-d-i-a-n-t

Radiant Industries, Inc. is a clean energy startup based in El Segundo, California, specializing in advanced nuclear energy solutions. Founded in 2019, the company is focused on the development of the Kaleidos microreactor, a portable and zero-emissions power source aimed at replacing traditional diesel generators. This innovative reactor is designed to deliver reliable energy for critical applications in remote locations, catering to both military and commercial customers. Radiant's microreactor can generate 1.2 MW of electricity and 1.9 MW of thermal power, making it suitable for various applications, including facility heating and water desalination. The company has received substantial funding, including a recent $100 million in Series C funding, which underscores its potential in the nuclear energy sector. Radiant is actively working towards testing its microreactor by 2026, aiming to be the first new commercial reactor design to achieve a fueled test in over 50 years. Their partnerships with organizations like the Idaho National Laboratory and various industry leaders further enhance their position in the nuclear energy market.

24. Progress Energy

• Website: progress-energy.com
• Ownership type: Corporate
• Headquarters: Raleigh, North Carolina, United States (USA)
• Employee distribution: United States (USA) 98%, Other 2%
• Latest funding: January 2011
• Founded year: 1908
• Headcount: 10001+
• LinkedIn: progress-energy

Progress Energy, founded in 1908 and based in Raleigh, North Carolina, is a corporate entity specializing in electricity generation and distribution. The company operates nuclear power plants, contributing significantly to its energy production capabilities. With a customer base of approximately 3.1 million across the Carolinas and Florida, Progress Energy plays a vital role in delivering reliable power services to both residential and business clients. The company is committed to energy efficiency and sustainability, reflecting its dedication to the communities it serves. As part of its operations, Progress Energy focuses on maintaining and enhancing its nuclear facilities to ensure safe and efficient energy production.

25. Nuclear Fuel Services

• Website: nuclearfuelservices.com
• Ownership type: Corporate
• Headquarters: Erwin, Tennessee, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: August 2008
• Founded year: 1957
• Headcount: 501-1000
• LinkedIn: nuclear-fuel-services

Nuclear Fuel Services (NFS), based in Erwin, Tennessee, is a corporate entity under BWX Technologies, Inc. Founded in 1957, NFS specializes in the production and management of nuclear fuel and components. The company is integral to the nuclear power industry, providing essential services that support the operation of nuclear reactors. NFS focuses on commercial nuclear fuel, strategic nuclear materials, and various nuclear services, including maintenance and inspection. Their expertise extends to environmental management and complex operations, ensuring that they meet the rigorous standards required in the nuclear sector. NFS operates primarily within the United States, catering to both government and private sector clients who require safe and effective nuclear solutions.

26. Edvance

• Website: edvance.fr
• Ownership type: Private
• Headquarters: Montrouge, Île-De-France, France
• Employee distribution: France 86%, United Kingdom (UK) 11%, Germany 2%
• Founded year: 2017
• Headcount: 1001-5000
• LinkedIn: edvance.fr

Edvance, founded in 2017 and based in Montrouge, Île-De-France, is a private nuclear engineering company with approximately 1,877 employees. It operates primarily in France and the UK, with a focus on the design, procurement, construction, and commissioning of nuclear islands for EPR (European Pressurized Reactor) technology. As a joint venture between EDF and Framatome, Edvance plays a crucial role in several high-profile nuclear projects, including Flamanville 3 in France, Hinkley Point C and Sizewell C in the UK, and the Jaitapur project in India. The company is dedicated to developing low-carbon nuclear power solutions, contributing to a CO2-neutral future. With a turnover of €600 million in 2022, Edvance is positioned as a key player in the nuclear sector, driving innovation and efficiency in nuclear power generation.

27. Paks II. Nuclear Power Plant Ltd.

• Website: paks2.hu
• Ownership type: Private
• Headquarters: Paks, Hungary
• Employee distribution: Hungary 99%, Other 1%
• Founded year: 2012
• Headcount: 201-500
• LinkedIn: paks-ii--nuclear-power-plant-ltd-

Paks II. Nuclear Power Plant Ltd., established in 2012, is a private company based in Paks, Hungary. It is dedicated to the construction and operation of nuclear power plants, aiming to meet the increasing electricity demand in the region. The company is involved in various initiatives, including training programs for nuclear sector professionals, ensuring a skilled workforce for the future. Paks II. collaborates with multiple stakeholders in the energy industry, emphasizing its commitment to sustainable energy solutions. The company currently employs between 201 and 500 individuals, primarily based in Hungary, and is focused on advancing nuclear energy technology and safety standards.

28. Atomenergomash Group

• Website: aem-group.ru
• Ownership type: Private
• Headquarters: Moscow, Moscow, Russia
• Employee distribution: Russia 100%
• Founded year: 2006
• Headcount: 10001+
• LinkedIn: atomenergomash-group

Atomenergomash Group, based in Moscow, Russia, is an engineering and manufacturing company established in 2006. It operates under the umbrella of Rosatom, focusing on the production of equipment for nuclear and thermal energy generation. The company plays a crucial role in the energy sector by providing technologies and services that ensure efficient and safe operations for energy producers and industrial clients. Atomenergomash Group specializes in manufacturing key components for nuclear power plants, including reactor installations and auxiliary equipment. They also engage in scientific research and development, contributing to advancements in nuclear technology. Their expertise extends to water treatment solutions, further enhancing their service offerings in the energy sector. With a workforce of over 10,000 employees, Atomenergomash Group is dedicated to innovation and quality in the nuclear energy field.

Nuclear Thermal Power Insights: Key Companies

Company	Headquarter	Size	Founded	Ownership
Areva	La Défense, Île-De-France, France	10001+	2001	Private
Framatome	Courbevoie, Île-De-France, France	10001+	1958	Private
X-energy	Rockville, Maryland, United States (USA)	201-500	2009	Venture Capital
Flibe Energy	Huntsville, Alabama, United States (USA)	11-50	2011	Private
Bruce Power	Tiverton, Ontario, Canada	1001-5000	2001	Private
Korea Hydro & Nuclear Power (KHNP)	Gyeongju-Si, Gyeongsangbuk-Do, South Korea	10001+	2001	Private
Urenco Global	Stoke Poges, England, United Kingdom (UK)	1001-5000	1970	Private
Kairos Power	Alameda, California, United States (USA)	201-500	2016	Private
copenhagen atomics	Kastrup, Denmark	51-200	2014	Venture Capital
Moltex Energy	United States (USA)	11-50	2014	Private
Ultra Safe Nuclear	Seattle, Washington, United States (USA)	201-500	2011	Venture Capital
Terrestrial Energy	Charlotte, North Carolina, United States (USA)	51-200	2013	Venture Capital
Holtec International	Jupiter, Florida, United States (USA)	501-1000	1986	Private
General Atomics	San Diego, California, United States (USA)	10001+	1955	Venture Capital
Rosenergoatom	Moscow, Moscow, Russia	10001+	1992	Private
Last Energy	Washington, D.C., District Of Columbia, United States (USA)	51-200	2019	Venture Capital
Fuel Company TVEL	Moscow, Moscow, Russia	10001+	1996	Private
Rolls-Royce SMR	Derby, England, United Kingdom (UK)	501-1000	2021	Corporate
Pebble Bed Modular Reactor (PBMR)	Centurion, Gauteng, South Africa	51-200	1999	Private
Blykalla	Stockholm, Stockholm, Sweden	51-200	2013	Private Equity
ARC Clean Energy	United States (USA)	11-50	2006	Venture Capital
Jimmy	Paris, Île-De-France, France	51-200	2021	Venture Capital
Radiant	El Segundo, California, United States (USA)	51-200	2019	Private Equity
Progress Energy	Raleigh, North Carolina, United States (USA)	10001+	1908	Corporate
Nuclear Fuel Services	Erwin, Tennessee, United States (USA)	501-1000	1957	Corporate
Edvance	Montrouge, Île-De-France, France	1001-5000	2017	Private
Paks II. Nuclear Power Plant Ltd.	Paks, Hungary	201-500	2012	Private
Atomenergomash Group	Moscow, Moscow, Russia	10001+	2006	Private

Want to Find More Nuclear Thermal Power Companies?

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...and a lot more!