Alternatives to Zephyr Fusion
The top Fusion Energy companies similar to Zephyr Fusion, ranked by relevance (named competitors first, then how closely their sectors overlap) and our 0-100 AI-readiness score. Each links to a full profile with funding and team.
URSA MAJOR71Defense TechBerthoud, United States$193.0M- ISIsembard65ManufacturingBristol, United Kingdom$59.0M
Observable Space64AerospaceAdrian, United States$101.0M- D-D-Orbit Portugal63SpaceTechFino Mornasco, Italy$160.0M
Astroscale58SpaceTechTokyo, Japan$630.8M
MAGDRIVE55SpaceTechHarwell, United Kingdom$12.5M- FIFirehawk Aerospace54SpaceTechHawthorne, United States$63.5M
Arinna54AerospacePalo Alto, United States$19.0M
L3Harris Technologies43AerospaceMelbourne, United States- OROrbital42Artificial IntelligenceDenver, United States$10.0M
General Atomics37Defense TechSan Diego, United States
Axial Composites Industries35Hard TechSan Francisco, United States- VIVIRIDIAN32SpaceTechPalo Alto, United States$10.0M
Northrop Grumman Systems26Defense TechFalls Church, United States$7.4B
DAIVIN!21Hard TechSan Francisco, United States- ISIsrael Aerospace Industries (IAI)18AerospaceLod, Israel
Aemetis15Climate TechCupertino, United States- SESEOPS10AerospaceHouston, United States
Airbus Zephyr85Defense TechPortsmouth, United Kingdom$202.4M
iMerit85AI Foundation & ComputeSan Jose, United States$43.5M- STStoke77AerospaceKent, United States$1.3B
- RTRTX75AerospaceArlington, United States
- HAHANWHA75ConglomerateSeoul, South Korea
TAE Technologies73Nuclear FusionFoothill Ranch, United States$100.0M
General Dynamics71AerospaceReston, United States$60.0B
Axelspace70AerospaceTokyo, Japan$63.0M- SPSpire Global70SpaceTechVienna, United States$1.2B
Axiom Space68SpaceTechHouston, United States$943.0M
Northrop Grumman68Defense TechFalls Church, United States$2.5B
Exotrail67SpaceParis, France$63.0M
Apex Space66SpaceLos Angeles, United States$200.0M
Impulse Space65SpaceRedondo Beach, United States$500.0M
Blue Origin64AerospaceKent, USA$55.4M
ArianeGroup64SpaceTechParis, France$95.0M
SLINGSHOT AEROSPACE64AerospaceWindsor, United States$73.8M- YOYORK SPACE SYSTEMS63AerospaceDenver, United States$629.0M
- NANaraSpace63AerospaceSeoul, South Korea$14.5M
- OPOpen Cosmos63AerospaceDidcot, United Kingdom$57.0M
Unifly63AerospaceLeuven, Belgium$34.6M- SISierra Space63AerospaceLouisville, USA$2.3B
Firefly Aerospace62SpaceTechCedar Park, United States$1.4B
ADRANOS62AerospaceWest Lafayette, United States$21.6M
Zap Energy62Clean EnergyEverett, USA$324.0M- STStarfish Space62AerospaceTukwila, United States$36.0M
- VAVarda Space Industries61AerospaceEl Segundo, United States$277.0M
Fabric8Labs61Advanced ManufacturingSan Diego, United States$175.8M
AetherFlux61Quantum ComputingPalo Alto, United States$300.0M
Redwire61AerospaceJacksonville, USA$63.0M
The Exploration Company61AerospaceBordeaux, Europe$105.0M
Utility Global, .61Climate TechGlendale, United States$10.0M
Castelion60DefenseEl Segundo, United States$400.0M
Freeform Future59ManufacturingSan Francisco, United States$77.0M
ORBION Space Technology59AerospaceHoughton, United States$59.3M
Stoke Space58SpaceTechKent, United States$685.3M
Saildrone58OceanographyAlameda, United States$179.5M
Vast57AerospaceLong Beach, United States$700.0M
HyImpulse56AerospaceNeuenstadt am Kocher, Germany$141.6M
Momentick56Greenhouse Gases (GHG)Tel Aviv, Israel$13.0M- EXExoAnalytic Solutions55AerospaceFoothill Ranch, United States$63.0M
Inertia Enterprises55ClimateLivermore, United States$550.0M
| Company | Sector | HQ | Funding | Score |
|---|---|---|---|---|
| URSA MAJOR | Defense Tech | Berthoud, United States | $193.0M | 71 |
| ISIsembard | Manufacturing | Bristol, United Kingdom | $59.0M | 65 |
| Observable Space | Aerospace | Adrian, United States | $101.0M | 64 |
| D-D-Orbit Portugal | SpaceTech | Fino Mornasco, Italy | $160.0M | 63 |
| Astroscale | SpaceTech | Tokyo, Japan | $630.8M | 58 |
| MAGDRIVE | SpaceTech | Harwell, United Kingdom | $12.5M | 55 |
| FIFirehawk Aerospace | SpaceTech | Hawthorne, United States | $63.5M | 54 |
| Arinna | Aerospace | Palo Alto, United States | $19.0M | 54 |
| L3Harris Technologies | Aerospace | Melbourne, United States | — | 43 |
| OROrbital | Artificial Intelligence | Denver, United States | $10.0M | 42 |
| General Atomics | Defense Tech | San Diego, United States | — | 37 |
| Axial Composites Industries | Hard Tech | San Francisco, United States | — | 35 |
| VIVIRIDIAN | SpaceTech | Palo Alto, United States | $10.0M | 32 |
| Northrop Grumman Systems | Defense Tech | Falls Church, United States | $7.4B | 26 |
| DAIVIN! | Hard Tech | San Francisco, United States | — | 21 |
| ISIsrael Aerospace Industries (IAI) | Aerospace | Lod, Israel | — | 18 |
| Aemetis | Climate Tech | Cupertino, United States | — | 15 |
| SESEOPS | Aerospace | Houston, United States | — | 10 |
| Airbus Zephyr | Defense Tech | Portsmouth, United Kingdom | $202.4M | 85 |
| iMerit | AI Foundation & Compute | San Jose, United States | $43.5M | 85 |
| STStoke | Aerospace | Kent, United States | $1.3B | 77 |
| RTRTX | Aerospace | Arlington, United States | — | 75 |
| HAHANWHA | Conglomerate | Seoul, South Korea | — | 75 |
| TAE Technologies | Nuclear Fusion | Foothill Ranch, United States | $100.0M | 73 |
| General Dynamics | Aerospace | Reston, United States | $60.0B | 71 |
| Axelspace | Aerospace | Tokyo, Japan | $63.0M | 70 |
| SPSpire Global | SpaceTech | Vienna, United States | $1.2B | 70 |
| Axiom Space | SpaceTech | Houston, United States | $943.0M | 68 |
| Northrop Grumman | Defense Tech | Falls Church, United States | $2.5B | 68 |
| Exotrail | Space | Paris, France | $63.0M | 67 |
| Apex Space | Space | Los Angeles, United States | $200.0M | 66 |
| Impulse Space | Space | Redondo Beach, United States | $500.0M | 65 |
| Blue Origin | Aerospace | Kent, USA | $55.4M | 64 |
| ArianeGroup | SpaceTech | Paris, France | $95.0M | 64 |
| SLINGSHOT AEROSPACE | Aerospace | Windsor, United States | $73.8M | 64 |
| YOYORK SPACE SYSTEMS | Aerospace | Denver, United States | $629.0M | 63 |
| NANaraSpace | Aerospace | Seoul, South Korea | $14.5M | 63 |
| OPOpen Cosmos | Aerospace | Didcot, United Kingdom | $57.0M | 63 |
| Unifly | Aerospace | Leuven, Belgium | $34.6M | 63 |
| SISierra Space | Aerospace | Louisville, USA | $2.3B | 63 |
| Firefly Aerospace | SpaceTech | Cedar Park, United States | $1.4B | 62 |
| ADRANOS | Aerospace | West Lafayette, United States | $21.6M | 62 |
| Zap Energy | Clean Energy | Everett, USA | $324.0M | 62 |
| STStarfish Space | Aerospace | Tukwila, United States | $36.0M | 62 |
| VAVarda Space Industries | Aerospace | El Segundo, United States | $277.0M | 61 |
| Fabric8Labs | Advanced Manufacturing | San Diego, United States | $175.8M | 61 |
| AetherFlux | Quantum Computing | Palo Alto, United States | $300.0M | 61 |
| Redwire | Aerospace | Jacksonville, USA | $63.0M | 61 |
| The Exploration Company | Aerospace | Bordeaux, Europe | $105.0M | 61 |
| Utility Global, . | Climate Tech | Glendale, United States | $10.0M | 61 |
| Castelion | Defense | El Segundo, United States | $400.0M | 60 |
| Freeform Future | Manufacturing | San Francisco, United States | $77.0M | 59 |
| ORBION Space Technology | Aerospace | Houghton, United States | $59.3M | 59 |
| Stoke Space | SpaceTech | Kent, United States | $685.3M | 58 |
| Saildrone | Oceanography | Alameda, United States | $179.5M | 58 |
| Vast | Aerospace | Long Beach, United States | $700.0M | 57 |
| HyImpulse | Aerospace | Neuenstadt am Kocher, Germany | $141.6M | 56 |
| Momentick | Greenhouse Gases (GHG) | Tel Aviv, Israel | $13.0M | 56 |
| EXExoAnalytic Solutions | Aerospace | Foothill Ranch, United States | $63.0M | 55 |
| Inertia Enterprises | Climate | Livermore, United States | $550.0M | 55 |