General Matter
General Matter is a USA company active in the nuclear fuel chain as haleu.
One of four companies the Department of Energy selected in October 2024 to supply HALEU, and awarded a ten-year contract in January 2026. It was a recently registered company with no operating history in enrichment at the time of selection and has not disclosed its technology, capacity or site.
| Headquarters | California, United States |
|---|---|
| Founded | not recorded |
| Ownership | private |
| Roles in the chain | haleu |
Position in the chain
Downstream
Output from this company feeds the stages below it in the chain, and ultimately 419 operating reactors across these types.
| Reactor type | Operating units |
|---|---|
| Pressurised water reactor | 309 |
| Pressurised heavy water reactor | 46 |
| Boiling water reactor | 45 |
| Gas-cooled reactor | 9 |
| Light water graphite reactor | 7 |
| Fast reactor | 2 |
| High-temperature gas reactor | 1 |
Facilities
| Facility | Stage | Country | Capacity / output | Status |
|---|---|---|---|---|
| General Matter | haleu | USA | not disclosed | planned |
General Matter in context
General Matter has 1 facility on record in 1 country (United States): 0 operating and 1 planned, licensing or under construction.
How these are worked out: shares and ranks use the world totals cited in the table, and only named companies are ranked (unnamed or country-level entries in a source are not). A facility with no stated capacity is counted as a facility but adds nothing to a capacity figure. Vendor figures count operating units where this company is the recorded reactor vendor; ages count from the start-up year on record, and build times run from construction start to grid connection, as on the age and build-times pages.
Sources
- General Matter, company source
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data