Nuclear Power Division

The Nuclear Power Division (NPD) implements Holtec’s business strategy of insuring utmost quality, safety, and client satisfaction through a vertically integrated supply of goods and services. NPD possesses all necessary technical resources to complete a turnkey project with the manufacturing carried out by its sister division Holtec Manufacturing Division.

Heat Transfer Division

The Heat Transfer Division (HTD) provides custom engineered equipment such as tubular heat exchangers and pressure vessels for the power generation, petro-chemical and chemical industries. The main focus of HTD’s business concentration is the large and complex heat transfer equipment essential to the operation of a power plant.

Site Services

Holtec’s Site Services experts provides on-site management, manufacturing and construction services, encompassing the full scope of spent fuel storage projects. With innovative thinking, practical planning, advanced processes, and experienced implementation teams, Holtec’s Site Services experts provide integrated products and services, often on a turnkey basis.


SMR, LLC is a Holtec subsidiary established in 2011 to manage the development of Holtec’s small modular reactor, SMR-160+ envisaged to be the transformative nuclear generation technology heralding the safety maturation of commercial nuclear energy in the 21st century.

Holtec Manufacturing Division

Holtec Manufacturing Division performs heavy manufacturing of spent nuclear fuel dry cask storage systems and ancillary equipment, as well as heat exchanger components. Located in Turtle Creek, Pennsylvania, the plant occupies over 700,000 square feet of heavy fabrication shop space.



Orrvilon’s 300,000 square foot vertically integrated manufacturing facility is equipped with cutting-edge machinery to fabricate complex aluminum shapes and structures. The extrusions are cut to length, punched, drilled, shaped, welded, wired, tested and packaged to exact client specifications.

Holtec Government Services

HGS was established in 2012 with the assigned mission to provide services to federal, state, and municipal governments in the fields of national defense, and carbon-free energy technologies including nuclear, solar, geothermal, and wind power.

Oak Ridge Technologies

Oak Ridge Technologies is joint venture between Holtec International and Gilmartin Engineering Works, approved by the Small Business Administration to participate in the All Small Mentor-Protégé Program allowing for participation in government contracting opportunities. 

Nuclear Consultants International

Nuclear Consultants International, LLC (NCI) is an autonomously constituted business unit of Holtec International. NCI was chartered to support nuclear utility and industrial companies with management and technology support services.

Holtec Decommissioning International

HDI functions as the licensed operator for Holtec owned nuclear power plants. HDI provides the licensee oversight the decommissioning work that is performed. HDI additionally, manages the decommissioning trust fund and other owner interests, such as licensing strategy, insurance, land and government interface.

Holtec Security International

Holtec Security International is a leader in physical security solutions specializing in critical infrastructure, and industrial, corporate and cyber security. HSI provides armed and unarmed protection, and security and access control to nuclear facilities, industrial installations, manufacturing plants, commercial properties, government entities and technology centers.

Holtec Canada

Holtec Canada was established in August 2020 as a division of Holtec International. Registered and operated in Nova Scotia, Canada, Holtec Canada’s capabilities include design, engineering, project management, site services and more.

Holtec Brasil

Holtec do Brasil is an international division of Holtec International, registered and operated in Rio de Janeiro, Brazil. Holtec do Brasil forms a key part of Holtec’s project execution team for the Angra Dry Storage Project with Eletrobras Eletronuclear, the first of its kind in the country.

Holtec Britain

Holtec Britain

Holtec Britain forms a key part of Holtec’s project execution team for the Sizewell B Dry Storage Project with EDF Energy, the first of its kind in the country.  Holtec Britain’s capabilities include project management, design engineering, manufacturing oversight and site services.

Holtec Europe

Holtec Europe is an international division of Holtec International, registered and operated in Spain. As a key part of our project execution team and growing business development in European territories, Holtec Europe was formed in 2021.

Holtec Ukraine

Holtec Ukraine forms a key part of Holtec’s project execution team for the Ukraine Spent Fuel Storage Facility and Chornobyl Interim Spent Fuel Storage Facility (ISF-2), the world’s largest dry fuel storage facility.  

Ukrainian Module Consortium

Ukrainian Module Consortium LLC was established on a voluntary basis in pursuance of the Partnership Agreement objectives between Holtec International, State Enterprise “National Nuclear Energy Generating Company “Energoatom” and State Enterprise “State Scientific and Technical Center for Nuclear and Radiation Safety”. The purpose of the Consortium is to facilitate activities regarding deployment of the SMR-160+ modular reactors technology in Ukraine.

Holtec Asia

Holtec Asia

Holtec Asia is a Holtec International subsidiary based in Pune, India. Holtec Asia provides design and analysis services to its U.S. parent and also executes turnkey equipment supply contracts for projects in South Asia, Southeast Asia, Middle East, and North Africa.

Applied Photonix

Applied Photonix

Applied Photonix LLC was established in 2023 as a subsidiary of Holtec International. The company develops innovative technologies that eradicate harmful pathogens from the air.  The principal inventors are scientists and serial entrepreneurs Dr. Yogi Goswami and Lovely Goswami.