General Matter
| Company type | Private |
|---|---|
| Industry | Nuclear fuel |
| Founded | January 2024 |
| Founders | Scott Nolan, Lee Robinson |
| Headquarters | California, United States |
Key people |
|
| Products | Low-enriched uranium (LEU), high-assay low-enriched uranium (HALEU) |
| Website | GeneralMatter.com |
General Matter is an American nuclear-fuel start up company, founded in 2024, that aims to develop domestic uranium enrichment capabilities for low-enriched uranium (LEU) and high-assay low-enriched uranium (HALEU). The company is focused on reducing U.S. dependence on foreign suppliers and supporting the deployment of advanced nuclear reactors. Reuters writes that it is on "a mission to help end Russia's monopoly on a type of more-enriched nuclear fuel."
In August 2025, General Matter leased part of the Paducah Gaseous Diffusion Plant from the United States Department of Energy (DOE), and in January 2026 received a $900 million contract from DOE to produce enriched uranium.