List of nuclear power companies

Nuclear reactor design company founded by a group that includes Bill Gates. In addition to efficient nuclear power, TerraPower is also researching the how the heat generated by nuclear reactions could be used for purposes other than turning steam turbines.

Commonwealth Fusion Systems is a Cambridge, Massachusetts-based research and development company developing fusion power systems based on ARC tokamak reactors.

Company developing a magnetized target fusion system to build the first commercially-viable fusion power plant

Deep Isolation offers an innovative solution to secure and dispose of nuclear waste.

Flibe Energy is an American company that intends to design, construct, and operate small modular reactors based on liquid fluoride thorium reactor (acronym LFTR; pronounced lifter) technology.

Seaborg develops the Compact Molten Salt Reactor - a small modular reactor based on molten fluoride salt.

Centrus Energy is a trusted supplier of nuclear fuel and services for the nuclear power industry.

A leading Swiss electricity producer and energy services provider that is active throughout Europe.

Energy company supplying electricity and natural gas to homes, businesses and wholesale customers in the Eastern United States.

The mission of Advanced Reactor Concepts (ARC) is to commercialize a disruptive new technology for power generation in the form of an advanced small modular nuclear reactor.

First Light Fusion Limited is a Yarnton, Oxfordshire, United Kingdom-based company founded in 2011 by Nicholas Hawker.

Terrestrial Energy is developing molten salt nuclear reactors.

Electric power holding company operating in the United States with a diverse power generation portfolio including renewable assets.

One of Europe’s largest generators of electricity and one of the largest producers of heat, 100%-owned by the Swedish state.

Power generating company in Slovakia and one of the largest in Central and Eastern Europe.

A company developing lead-cooled small nuclear reactor technology.

Company providing nuclear fuel cycle technology and consulting solutions.

A company providing treatment, disposal and interim storage of low-level radioactive waste in the United States.

Company developing modular and scalable small nuclear power systems.

BWX Technologies is a company that is a supplier of nuclear components and fuel to the United States government

Established in 1867, B&W is a global leader in energy and environmental technologies and services for the power and industrial markets.

Tokamak Energy is a private company accelerating the development of fusion power.

Exelon's family of companies represents every stage of the energy value chain. Operating in 48 states, Washington D.C., and Canada.

A company operating Europe's largest gas pipeline network, including the French system, and a global fleet of power plants with 60 net gigawatts of capacity.

Enel is a multi-national power company and a leading integrated player in the world's power and gas markets.