MoltexFLEX
Developer of the FLEX reactor: a nuclear reactor that can meet the global demand for clean, low-cost, flexible energy.
16 employees · est. 2022 · Warrington, United Kingdom
TerraPower is the older company (2022 vs 2006); TerraPower is the larger of the two.
Side-by-Side Comparison
| Metric | MoltexFLEX | TerraPower |
|---|---|---|
| Founded | ||
| Founded | 2022 | 2006 older |
| Headquarters | ||
| Headquarters | Warrington, United Kingdom | Bellevue, United States |
| Employees | ||
| Employees | 16 | 887 larger |
| Industry | ||
| Industry | Energy, Clean Energy, Energy Storage | Energy, Clean Energy |
| Funding Stage | ||
| Funding Stage | Grant | Series Unknown |
| Total Funding | ||
| Total Funding | $1.30M | $1.41B |
| Funding Rounds | ||
| Funding Rounds | 2 | 5 |
| Services | ||
| Services | Not tracked yet | Natrium reactor development and deployment, Energy storage solutions using molten salt, Innovative nuclear plant construction, Development of next-generation isotopes |
| Target Customers | ||
| Target Customers | Not tracked yet | Energy Utilities, Industrial Clients for Decarbonization, Healthcare Providers using Medical Isotopes, Government Energy Departments |
| Taxonomy | ||
| Taxonomy | Nuclear Energy, Clean Energy, Low-cost Energy, Flexible Energy, Climate Change, Fission Reaction, Sustainable Power, Energy Innovation, Small Modular Reactor, Decarbonization, Energy Technology, Sustainable Development, Engineering Innovation | Nuclear Energy, Technology Company, Sustainable Energy, Energy Research, Energy Development, Advanced Nuclear Technology, Export Control, Nuclear Fast Reactors, TerraPower Technology, Global Development, Economic Development, US Government Regulations, Talent Acquisition, Nuclear Waste Conversion, Proliferation Risks |
| Website | ||
| Website | moltexflex.com | terrapower.com |
About MoltexFLEX
MoltexFLEX is a UK-based startup dedicated to developing the FLEX reactor, a nuclear reactor designed to fulfill the global demand for clean, low-cost, and flexible energy. The company's simple yet innovative approach to nuclear reactor design focuses on utilizing the natural properties of materials...
About TerraPower
TerraPower, founded in 2006, is a prominent entity in the Clean Energy sector, particularly focusing on nuclear innovation. The company is headquartered in the United States and strives to revolutionize the energy landscape by developing advanced nuclear technologies aimed at providing safe, abundan...
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Funding, hiring, leadership and stack changes at MoltexFLEX and TerraPower — by email.
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Compiled from the BounceWatch company index. We last looked at MoltexFLEX on 12 Sep 2024, and TerraPower on 19 Aug 2025. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.