Cameco Corporation
Cameco Corporation is a CAN company active in the nuclear fuel chain as miner, converter, fabricator.
The largest Western uranium producer, and one of very few companies present at three separate stages of the chain: it mines in northern Saskatchewan, converts to UF6 at Port Hope, and fabricates CANDU fuel. Since 2023 it also owns 49% of Westinghouse alongside Brookfield, which extends its reach to reactor supply and LWR fuel. Its McArthur River and Cigar Lake deposits are the highest-grade uranium orebodies on earth by a wide margin.
| Headquarters | Saskatoon, Saskatchewan, Canada |
|---|---|
| Founded | 1988 |
| Ownership | listed |
| Listing | NYSE: CCJ |
| Roles in the chain | miner, converter, fabricator |
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 |
|---|---|---|---|---|
| Port Hope Conversion Facility | conversion | CAN | 12,500tU/yr as UF6 | operating |
| Cameco Fuel Manufacturing, Port Hope | fabrication | CAN | 1,650tHM/yr | operating |
| McArthur River / Key Lake | mining | CAN | 7,808tU/yr | operating |
| Cigar Lake | mining | CAN | 6,501tU/yr | operating |
| Smith Ranch-Highland | mining | USA | 2,116tU/yr | operating |
Cameco Corporation in context
In conversion Cameco Corporation holds 12,500 of the 62,000 tU/yr as UF6 of world conversion capacity in 2022 (20%), ranking 3rd of the 5 named operators in the source.
Cameco Corporation has 5 facilities on record in 2 countries (Canada and United States): 5 operating.
Share of each stage it works in
| Stage | Company | World total | Share | Rank | Source |
|---|---|---|---|---|---|
| Conversion | 12,500tU/yr as UF6 | 62,000(2022) | 20% | 3 of 5 | World Nuclear Association, Conversion and Deconversion |
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.
What it supplies
| Product | For | Operating units of that kind |
|---|---|---|
| CANDU fuel bundles, natural uranium | phwr | - |
Recorded as capability against a reactor type or model line rather than against named units, because utilities do not publish fuel contracts.
Sources
- Cameco Corporation, 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