All Industries
Top Nuclear Energy Companies
7 Nuclear Energy companies, sorted by total funding raised.
X
X-Energy
Advanced nuclear reactor company developing small modular reactors and TRISO fuel for clean power
Rockville, United States501–1000Clean Energy, Nuclear Energy
Funding undisclosed
R
Radiant
Clean energy startup developing portable nuclear microreactors as zero-emission alternatives to d...
El Segundo, United StatesNuclear Energy, Clean Energy
Funding undisclosed
AI
Antares Industries
Making energy abundant from Earth to the asteroid belt
Los Angeles, United StatesDefense Tech, Energy
Funding undisclosed
O
Oklo
IPO
Emission free, always on power from advanced fission power plants.
Santa Clara, United States11–50Climate Tech, Industrials
Funding undisclosed
MF
Maritime Fusion
Fusion reactors for ships
1–10Industrials, Nuclear Energy
Funding undisclosed
AA
Atomic Alchemy
Acquired
We produce cancer-curing materials used in nuclear medicine.
Idaho Falls, United States1–10Deep Tech, Industrials
Funding undisclosed
HE
Helion Energy
Building the world's first fusion power plant
Everett, United States51–200Climate Tech, Deep Tech
Series F·Jan 2025