| # | Company | Location | Employees | Total Funding | Last Round | Last Funded |
|---|---|---|---|---|---|---|
| 1 |
Oklo
Oklo specializes in designing and developing small modular reactors for advanced…
|
Santa Clara | — | $440.6M | Post Ipo Equity | 2025-06-12 |
| 2 |
Fervo Energy
Fervo Energy develops and operates clean energy technology to generate carbon-fr…
|
Houston | 101 - 250 | $1.9B | Debt Financing | 2026-03-19 |
| 3 |
X-energy
X-energy is a nuclear energy company that develops small modular nuclear reactor…
|
Rockville | 501 - 1K | $1.7B | Series D | 2025-11-24 |
| 4 |
Type One Energy
Stellarator technology to transform energy markets with fusion power.
|
Oak Ridge | 51 - 100 | $169.5M | Convertible Note | 2026-01-14 |
| 5 |
Last Energy
Last Energy is a nuclear technology company that provides nuclear energy through…
|
Washington | 101 - 250 | $164.0M | Series C | 2025-12-16 |
| 6 |
Deep Isolation
Deep Isolation develops and commercializes technology to safely dispose of nucle…
|
Berkeley | 11 - 50 | $55.6M | Grant | 2026-01-13 |
| 7 |
TerraPower
TerraPower is a nuclear energy technology firm that focuses on developing a sust…
|
Bellevue | 501 - 1K | $1.5B | Secondary Market | 2026-01-20 |
| 8 |
NuScale Power
NuScale Power has developed a small modular reactor (SMR) to supply energy for e…
|
Corvallis | 251 - 500 | $2.4B | Post Ipo Secondary | 2026-02-17 |
| 9 |
General Matter
General Matter is a nuclear energy company that produces enriched uranium fuel f…
|
San Francisco | 11 - 50 | $50.0M | Series Unknown | 2025-04-14 |
| 10 |
Valar Atomics
Valar Atomics is a company focused on scaling nuclear energy beyond the traditio…
|
El Segundo | 11 - 50 | $599.0M | Series B | 2026-04-01 |
| 11 |
Terrestrial Energy
Terrestrial Energy is a developer of a reactor power plant technology to provide…
|
Oakville | 51 - 100 | $156.6M | Post Ipo Equity | 2025-10-28 |
| 12 |
Aalo Atomics
Aalo Atomics manufactures and develops nuclear power plants for clean energy pro…
|
Austin | 51 - 100 | $135.8M | Series Unknown | 2025-10-01 |
| 13 |
Newcleo
Newcleo is an atomic energy company that focuses on developing advanced nuclear …
|
Paris | 1K - 5K | $765.7M | Series B | 2026-02-03 |
| 14 |
Deep Fission
Deep Fission is transforming the energy landscape by installing modular nuclear …
|
Berkeley | 11 - 50 | $114.0M | Post Ipo Equity | 2026-02-10 |
| 15 |
Nusano
Nusano is a physics firm that produces radioisotopes, tiny tracers doctors use t…
|
Valencia | 101 - 250 | $115.0M | Series C | 2024-10-01 |
| 16 |
Blykalla
small modular reactors, clean energy, deep tech
|
Stockholm | 11 - 50 | $57.3M | Series Unknown | 2025-12-18 |
| 17 |
The Nuclear Company
The Nuclear Company enables the deployment of nuclear power plants at fleet-scal…
|
Lexington | 11 - 50 | $46.3M | Series A | 2025-05-15 |
| 18 |
Atomos Space
Atomos Space is an aerospace company building and developing orbital transfer ve…
|
Denver | 11 - 50 | $22.8M | Series Unknown | 2023-03-28 |
| 19 |
Standard Nuclear
Standard Nuclear manufactures advanced nuclear fuel for next-generation reactors…
|
Oak Ridge | 11 - 50 | $186.5M | Series A | 2025-06-11 |
| 20 |
Hadron Energy
Hadron Energy is a manufacturing company that specializes in Micro Nuclear React…
|
San Francisco | 1 - 10 | $900K | Pre Seed | 2024-07-22 |
| 21 |
Kairos Power
Kairos Power is an ancient Greek word that relates the importance of timeliness …
|
Alameda | 251 - 500 | $16K | Grant | 2022-06-03 |
| 22 |
Thorizon
Thorizon develops and deploys cutting-edge technology for molten salt reactors.
|
Amsterdam | 11 - 50 | $45.2M | Grant | 2025-03-12 |
| 23 |
Nuclearn
Nuclearn is a software company delivering AI solutions for automating Nuclear In…
|
Phoenix | 11 - 50 | $13.0M | Series A | 2025-09-09 |
| 24 |
Centrus Energy
Centrus Energy supplies low enriched uranium (LEU) for commercial nuclear power …
|
Bethesda | 251 - 500 | $2.2B | Post Ipo Equity | 2025-11-06 |
| 25 |
Blue Energy
Blue Energy is a nuclear power plant company that provides reliable, clean, and …
|
Kastrup | 1 - 10 | $45.0M | Series A | 2024-10-08 |
| 26 |
Orano
Orano is a nuclear fuel cycle company.
|
Paris | c 10001 max | $1.9B | Grant | 2026-01-05 |
| 27 |
Atomic Canyon
Atomic Canyon AI application is intended for use in and by nuclear power plants,…
|
San Luis Obispo | 1 - 10 | $7.0M | Seed | 2025-05-28 |
| 28 |
TVO
TVO engages in the production of sustainable electricity from the Olkiluoto nucl…
|
Eurajoki | 1K - 5K | $1.3B | Debt Financing | 2025-10-30 |
| 29 |
Southern Company
Southern Company headquartered in Birmingham, Alabama, is the shared services di…
|
Atlanta | c 10001 max | $6.2B | Post Ipo Equity | 2025-10-03 |
| 30 |
Westinghouse Electric Company
Westinghouse Electric Company provides innovative and secure nuclear technology …
|
Cranberry | c 10001 max | $1.6B | Grant | 2025-12-08 |
| 31 |
Copenhagen Atomics
Copenhagen Atomics is a manufacturer of thorium reactors.
|
Kastrup | 51 - 100 | $33.6M | Series Unknown | 2025-07-24 |
| 32 |
Maritime Fusion
Maritime Fusion specializes in the development and construction of high-temperat…
|
San Francisco | 1 - 10 | $5.0M | Seed | 2025-11-24 |
| 33 |
EX-Fusion
EX-Fusion is a laser fusion company that develops commercial laser based nuclear…
|
Osaka | 1 - 10 | $34.2M | Series A | 2025-10-14 |
| 34 |
nT-Tao Compact Fusion Power
nT-Tao is building a compact fusion reactor to supply clean, safe, scalable, sta…
|
Hod Hasharon | 11 - 50 | $27.0M | Grant | 2025-03-03 |
| 35 |
CERN
CERN provides particle accelerators and other infrastructure needed for high-ene…
|
Meyrin | 1K - 5K | $165K | Grant | 2023-06-07 |
| 36 |
Laboratory for Laser Energetics
Laboratory for Laser Energetics leads research in inertial confinement fusion, h…
|
Rochester | 101 - 250 | $11.9M | Grant | 2026-03-19 |
| 37 |
Curio
CURIO is a nuclear technology company that develops NuCycle systems to recycle n…
|
Washington | 11 - 50 | $12.6M | Grant | 2026-02-06 |
| 38 |
STELLARIA
STELLARIA is reimagining sustainable rapid neutron nuclear energy.
|
Grenoble | 11 - 50 | $37.6M | Seed | 2025-07-17 |
| 39 |
N
Nova Fusion
Nova Fusion is an innovative company that provides commercialization of small mo…
|
Shanghai | — | $69.3M | Angel | 2026-04-10 |
| 40 |
Applied Atomics, Inc.
Co-located nuclear power plants to unlock the next 1,000 years of advanced indus…
|
Anchorage | 1 - 10 | $10.3M | Seed | 2026-03-25 |
| 41 |
C Ray Therapeutics
C Ray Therapeutics develops healthcare advancements through nuclear medicine.
|
Chengdu | 11 - 50 | $100.0M | Series A | 2024-11-16 |
| 42 |
Jimmy
Jimmy is a supplier of carbon-free industrial heat to industrialists relying on …
|
Paris | 101 - 250 | $14.8M | Grant | 2026-03-10 |
| 43 |
Miraex
Miraex develops photonic and quantum solutions for next-gen sensing, networking,…
|
Ecublens | 1 - 10 | $6.9M | Seed | 2022-05-01 |
| 44 |
Moltex Energy
Moltex Energy is an advanced nuclear technology company headquartered in New Bru…
|
Saint John | 11 - 50 | $48.3M | Grant | 2021-03-30 |
| 45 |
Hylenr Technologies
Nuclear Fusion and Clean Energy
|
Hyderabad | 11 - 50 | $3.0M | Seed | 2025-08-06 |
| 46 |
Stellaria
Stellaria is a 200 MWe molten salt reactor with 20-year autonomy, delivering saf…
|
Sarreguemines | 11 - 50 | $26.7M | Series Unknown | 2025-07-18 |
| 47 |
Seaborg Technologies
Seaborg develops the Compact Molten Salt Reactor - a smal modular reactor based …
|
Copenhagen | 101 - 250 | $28.4M | Grant | 2022-06-07 |
| 48 |
Miresso
Miresso is a startup firm that offers production of beryllium, and nuclear fusio…
|
Misawa | 11 - 50 | $27.6M | Series A | 2025-08-07 |
| 49 |
Zeno Power
Zeno is developing next-generation radioisotope power systems that generate carb…
|
Washington | 51 - 100 | $94.9M | Series B | 2025-05-14 |
| 50 |
Blue Capsule Technology
Blue Capsule Technology is a nuclear power company that develops advanced innova…
|
Aix-en-provence | 11 - 50 | $13.1M | Seed | 2024-07-04 |