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.
| 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 |
 Arinna | Aerospace | Palo Alto, United States | $19.0M | 54 |
| FIFirehawk Aerospace | SpaceTech | Hawthorne, United States | $63.5M | 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 |
 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 |
| SISierra Space | Aerospace | Louisville, USA | $2.3B | 63 |
 Unifly | Aerospace | Leuven, Belgium | $34.6M | 63 |
| OPOpen Cosmos | Aerospace | Didcot, United Kingdom | $57.0M | 63 |
| NANaraSpace | Aerospace | Seoul, South Korea | $14.5M | 63 |
 ADRANOS | Aerospace | West Lafayette, United States | $21.6M | 62 |
 Zap Energy | Clean Energy | Everett, USA | $324.0M | 62 |
 Firefly Aerospace | SpaceTech | Cedar Park, United States | $1.4B | 62 |
| STStarfish Space | Aerospace | Tukwila, United States | $36.0M | 62 |
 Redwire | Aerospace | Jacksonville, USA | $63.0M | 61 |
 AetherFlux | Quantum Computing | Palo Alto, United States | $300.0M | 61 |
 The Exploration Company | Aerospace | Bordeaux, Europe | $105.0M | 61 |
| VAVarda Space Industries | Aerospace | El Segundo, United States | $277.0M | 61 |
 Fabric8Labs | Advanced Manufacturing | San Diego, United States | $175.8M | 61 |
 Utility Global, . | Climate Tech | Glendale, United States | $10.0M | 61 |
 ORBION Space Technology | Aerospace | Houghton, United States | $59.3M | 59 |
 Freeform Future | Manufacturing | San Francisco, United States | $77.0M | 59 |
 Saildrone | Oceanography | Alameda, United States | $179.5M | 58 |
 Stoke Space | SpaceTech | Kent, United States | $685.3M | 58 |
 Vast | Aerospace | Long Beach, United States | $700.0M | 57 |
 Momentick | Greenhouse Gases (GHG) | Tel Aviv, Israel | $13.0M | 56 |
 HyImpulse | Aerospace | Neuenstadt am Kocher, Germany | $141.6M | 56 |
 Inertia Enterprises | Climate | Livermore, United States | $550.0M | 55 |
| EXExoAnalytic Solutions | Aerospace | Foothill Ranch, United States | $63.0M | 55 |
 FLEXOO | Robotics | Munich, Germany | $11.9M | 55 |
 K2 | Aerospace | Denver, USA | $63.0M | 55 |