Top Nuclear Energy Companies in the US

4 min read

Get started

Trusted by data-driven investors

In 2025, the nuclear energy sector in the United States is marked by innovation and sustainability, driven by key players such as Natura Resources, which focuses on molten salt reactors, and Nano Nuclear Energy Inc., pioneers of portable microreactor technology. Other firms like BHI Energy and Southern Company emphasize operational excellence in power generation and investment strategies. Grounded in various locations including New York, Texas, and Wisconsin, these companies demonstrate diverse approaches to addressing energy demands while upholding safety and environmental standards.

UCAN Power - United Coalition for Advanced Nuclear Power logo

UCAN Power - United Coalition for Advanced Nuclear Power

🇺🇸 Washington, DC 20002, US

UCAN Power is dedicated to advancing small and micro nuclear reactors, promoting clean, safe, and reliable energy solutions for diverse applications. With a focus on responsible advocacy and market-driven policies, it aims to facilitate the growth of innovative nuclear technology in the energy sector.

nuclear power
clean energy
micro reactors
small reactors
energy generation
advanced nuclear
energy policy
safety standards
technology advocacy
government collaboration
Company size: 2-10
Founded: 2021
Boston Atomics logo

Boston Atomics

🇺🇸 Boston, MA, US

Boston Atomics is focused on decarbonizing the industrial process heat market through safe and easily constructed nuclear power solutions. By leveraging high-temperature-gas-reactor technology and a design for constructability approach, it addresses construction cost challenges while providing sustainable energy for sectors such as plastics, chemicals, and fertilizers.

nuclear power
decarbonization
industrial heat
high-temperature reactors
construction cost
process heat
innovative design
energy transition
clean energy
reactor technology
Company size: 2-10
Founded: 2020
Nano Nuclear Energy Inc. (NASDAQ: NNE) logo

Nano Nuclear Energy Inc. (NASDAQ: NNE)

🇺🇸 1400 Broadway New York, New York 11106, US

NANO Nuclear Energy Inc. is an innovative player in the nuclear electric power generation industry, specializing in the development of portable microreactor technology and a vertically integrated approach to nuclear fuel fabrication, transportation, and consulting services. With advanced reactors like "ZEUS" and "ODIN," the firm aims to provide clean, on-demand energy solutions while establishing a unique supply chain for high-assay, low-enriched uranium fuel.

nuclear energy
microreactor
portable reactor
fuel fabrication
fuel transportation
consulting services
clean energy
HALEU
advanced reactor
zero carbon
green technology
energy crisis
Company size: 11-50
Founded: 2021
Nuclear Fusion Stocks logo

Nuclear Fusion Stocks

🇺🇸 New York State Throughway Brocton, New York 14716, US

A premier source for insights and analysis in the renewable energy sector, this platform focuses on advancements, challenges, and investment opportunities in nuclear fusion technology, emphasizing its potential to contribute to a sustainable future and combat climate change.

nuclear fusion
renewable energy
power generation
energy policy
climate change
market analysis
investment opportunities
scientific research
technological advancements
sustainability
energy transition
clean energy
Company size: 2-10
Founded: 2023
UxC, LLC logo

UxC, LLC

🇺🇸 1501 Macy Drive Roswell, Georgia 30076, US

UxC, LLC specializes in providing comprehensive data and analysis for the nuclear fuel market, focusing on uranium, conversion, and enrichment sectors. Notably, it pioneered the introduction of uranium futures contracts and has expanded its services to include reactor technology assessments and used fuel management.

nuclear fuel
market data
price analysis
supply chain
demand analysis
uranium
conversion
enrichment
reactor technologies
fuel management
training seminar
international organizations
Company size: 11-50
Founded: 1994
OMNICORP Power (Star Energy) logo

OMNICORP Power (Star Energy)

🇺🇸 1 Omni Way Austin , TX 78701, US

OMNICORP Power specializes in nuclear electric power generation, focusing on the development of innovative nuclear fusion technology through its STARFUSION reactor. The firm aims to provide clean, safe, and sustainable energy solutions, leveraging the potential of small modular reactors in the fusion energy sector.

nuclear fusion
power generation
fusion energy
clean energy
sustainable energy
modular reactors
Stellarator
energy technology
Company size: 51-200
Founded: 2010
MIT Center for Advanced Nuclear Energy Systems logo

MIT Center for Advanced Nuclear Energy Systems

🇺🇸 77 Massachusetts Avenue, 24-215 Cambridge, MA 02139, US

An innovative research hub focused on advancing nuclear energy systems, specializing in sustainability, safety, and decarbonization through data analysis and global collaboration on nuclear initiatives.

nuclear
energy
climate
research
decarbonization
safety
regulation
risk assessment
sustainability
science
engineering
reactor
Company size: 5001-10000
Founded: 2000
Hadron Energy logo

Hadron Energy

🇺🇸 San Francisco, CA 94107, US

Hadron Energy focuses on the research, design, and development of Micro Nuclear Reactors (MNR), positioning itself as a leader in the nuclear electric power generation industry. With a commitment to providing limitless clean energy, it aims to advance sustainable energy solutions and promote a healthier, more equitable future.

nuclear energy
clean energy
micro nuclear reactors
small modular reactors
renewable energy
engineering
design
manufacturing
industrial
licensing
Company size: 2-10
Founded: 2024

Solid Atomic specializes in the development of solid state nuclear reactor technology, focusing on photon intermediate direct energy conversion (PIDEC) to deliver an efficient and cost-effective fission to electricity conversion cycle. By utilizing advanced materials and innovative reactor designs, it aims to provide a high power density, zero-carbon source of clean energy.

nuclear power
solid state
atomic energy
fission
energy conversion
PIDEC
clean energy
high power density
zero-carbon
excimer technology
photovoltaic technology
Company size: 1
Founded: 2023
Nuclear Energy - The Better Energy logo

Nuclear Energy - The Better Energy

🇺🇸 Chicago, Illinois 60561, US

A platform dedicated to raising awareness about nuclear energy, focusing on dispelling fears and misconceptions while promoting its role as a sustainable solution to climate challenges. It combines research expertise in nuclear physics and reactor safety to educate the public on the benefits of nuclear power for a safer and environmentally friendly future.

nuclear energy
awareness
research
sustainability
carbon emissions
nuclear physics
radiation
reactor safety
power production
climate impact
educational resources
nuclear power
Company size: 2-10
Founded: 2018
X-energy logo

X-energy

🇺🇸 801 Thompson Avenue Rockville, MD 20852, US

X-energy is focused on advancing nuclear electric power generation by reinventing nuclear technology to deliver reliable, carbon-free energy. Their innovative approach includes manufacturing advanced fuel that prevents meltdowns and designing clean energy plants, making them a leader in safe and affordable nuclear solutions for the future.

nuclear energy
advanced nuclear
clean energy
zero-emission
pebble bed reactor
small modular reactor
advanced reactor
nuclear engineering
neutronics
reactor design
baseload power
Company size: 201-500
Founded: 2009
Mitsubishi Nuclear Energy Systems, Inc. logo

Mitsubishi Nuclear Energy Systems, Inc.

🇺🇸 13860 Ballantyne Corporate Pl Charlotte, North Carolina 28277, US

Mitsubishi Nuclear Energy Systems specializes in providing advanced replacement components, services, and technologies for U.S. utilities operating pressurized water reactor nuclear power plants, including the next-generation US-APWR design that emphasizes safety, reliability, and environmental compatibility. The focus on evolutionary advancements in nuclear technology positions it as a leader in enhancing the efficiency and sustainability of nuclear energy.

nuclear energy
pressurized water reactor
replacement components
steam generators
reactor vessel
water jet peening
Alloy 600
clean energy
safety
reliability
US-APWR
environmental compatibility
Company size: 11-50
Founded: 2006
ZettaJoule, Inc. logo

ZettaJoule, Inc.

🇺🇸 11921 Rockville Pike Rockville, Maryland 20852, US

ZettaJoule, Inc. specializes in nuclear electric power generation, focusing on transforming the energy ecosystem through innovative nuclear fission technology. By integrating and consolidating nuclear supply chains and developing small modular nuclear power plants, it offers firm, clean zero-carbon power and various hydrogen products, contributing to decarbonization efforts.

nuclear
power
electricity
clean energy
hydrogen
decarbonization
small modular reactor
process heat
carbon free
sustainable energy
Company size: 2-10
Founded: 2023
Terrestrial Energy logo

Terrestrial Energy

🇺🇸 9319 Robert D Snyder Rd Portal 316

A developer of Generation IV nuclear plants, specializing in proprietary Integral Molten Salt Reactor (IMSR) technology, this firm focuses on delivering zero-carbon, reliable energy solutions for industrial applications, including chemical synthesis and desalination. Its innovative approach aims to enhance the versatility and cost-effectiveness of nuclear energy, contributing to global decarbonization and energy security.

nuclear power
molten salt
Generation IV
clean energy
industrial heat
cogeneration
small modular reactor
green hydrogen
green ammonia
decarbonization
energy security
Company size: 51-200
Founded: 2013

Atomic Canyon leverages advanced AI technology to modernize solutions in the nuclear energy sector, offering innovative tools like Neutron, a custom-built AI search platform that enhances data access and workflow efficiency for nuclear power plants and related institutions. Their mission focuses on harnessing AI to promote knowledge-sharing and drive the future of clean, reliable energy.

AI
nuclear energy
data access
documentation management
workflow efficiency
regulatory compliance
knowledge sharing
reactor technology
energy innovation
information navigation
Company size: 2-10
Founded: 2024
Southern Nuclear logo

Southern Nuclear

🇺🇸 3535 Colonnade Pkwy Birmingham, Alabama 35243, US

Southern Nuclear specializes in nuclear power generation, operating multiple reactors that contribute to clean energy production. Notably, it has achieved significant milestones with the commercial operation of Vogtle Units 3 and 4, marking the first new nuclear units built in the U.S. in over thirty years.

nuclear power
clean energy
electricity generation
energy innovation
reactor operations
commercial operation
power plants
energy production
Company size: 1001-5000
Transatomic Power logo

Transatomic Power

🇺🇸 Transatomic Power Corporation 1 Broadway, 14th floor

Transatomic Power is innovating in the renewable energy sector by developing molten salt reactors that generate clean, safe, and affordable nuclear power. Their technology offers a revolutionary alternative to traditional light water reactors, providing a low-cost and environmentally-friendly solution for electricity generation that is inherently safe and capable of replacing fossil fuels.

renewable energy
nuclear power
molten salt reactor
carbon-free electricity
safe design
energy technology
fossil fuel alternative
clean energy
low-cost energy
semiconductor manufacturing
Company size: 2-10
Founded: 2010
Studsvik Scandpower logo

Studsvik Scandpower

🇺🇸 Idaho Falls, US

Specializing in nuclear engineering simulation software, this firm enables nuclear engineers to optimize reactor core design and safety analysis while ensuring accountability for nuclear fuel and special nuclear materials. Its innovative approaches in nuclear physics and reactivity management position it as a key player in facilitating the benefits of clean nuclear energy.

nuclear engineering
simulation software
reactor core
safety analysis
reactivity management
fuel optimization
core monitoring
inventory management
nuclear physics
spent fuel accountability
NQA-1
ISO 9001
Company size: 11-50
Founded: 1981
Orano USA logo

Orano USA

🇺🇸 4747 Bethesda Ave 10th Floor

Orano USA specializes in advanced reactor services, uranium sales, used nuclear fuel management, and reactor decommissioning within the nuclear electric power generation industry, offering innovative solutions for sustainable energy and efficient waste management.

nuclear power
advanced reactors
uranium sales
fuel management
reactor decommissioning
federal services
nuclear medicine
Company size: 501-1000
Founded: 2017
Nuclear Insider logo

Nuclear Insider

🇺🇸 499 7th Ave New York, NY 10018, US

Nuclear Insider operates in the technology and media sectors, specializing in comprehensive information and insights related to the nuclear industry, including nuclear energy, uranium enrichment, and clean energy solutions. Their innovative approach positions them as a go-to resource for all things nuclear, promoting awareness and advancements in carbon-free energy.

nuclear
nuclear energy
uranium
enrichment
reactor
nuclear waste
nuclear power
radioactive
atomic
clean energy
carbon free energy
Company size: 2-10
Founded: 2023

Updated on

Let our AI browse all websites for you

Save time, improve accuracy, and get ahead of the competition with Cenco.ai.

Get started

You might be interested in