AtkinsRéalis (Candu Energy)
AtkinsRéalis (Candu Energy) is the nuclear steam supply system vendor for 39 reactor units on record, 25 of them operating, totalling 18.9 GW of gross capacity across 5 countries.
Operating units
25
18.9 GW gross
Under construction
0
Planned
2
Retired
9
Owner of the CANDU pressurised heavy water reactor line, acquired from Atomic Energy of Canada Limited in 2011. CANDU runs on natural uranium and refuels on load, which removes enrichment from its fuel chain entirely. Current product is the CANDU MONARK.
Company
| Headquarters | Montreal, Canada |
|---|---|
| Founded | not recorded |
| Ownership | listed |
| Listing | TSX: ATRL |
| Roles in the chain | vendor |
Installed base by country
| Canada | 17 |
|---|---|
| South Korea | 3 |
| Romania | 2 |
| China | 2 |
| Argentina | 1 |
Design lines
| Design | Generation | Capacity | Operating | Units |
|---|---|---|---|---|
| CANDU 6 | II | 600–750 MWe gross | 9 | 14 |
Installed base
| Unit | Country | Status | Model | Gross MW | Online |
|---|---|---|---|---|---|
| Darlington nuclear power plant 1 | Canada | CANDU 850 | 934 | 1992 | |
| Darlington nuclear power plant 2 | Canada | CANDU 850 | 934 | 1990 | |
| Darlington nuclear power plant 3 | Canada | CANDU 850 | 934 | 1993 | |
| Darlington nuclear power plant 4 | Canada | CANDU 850 | 934 | 1993 | |
| Bruce nuclear power plant B6 | Canada | CANDU 750B | 891 | 1984 | |
| Bruce nuclear power plant B5 | Canada | CANDU 750B | 872 | 1985 | |
| Bruce nuclear power plant B7 | Canada | CANDU 750B | 872 | 1986 | |
| Bruce nuclear power plant B8 | Canada | CANDU 750B | 872 | 1987 | |
| Bruce nuclear power plant A1 | Canada | CANDU 791 | 868 | 1977 | |
| Bruce nuclear power plant A4 | Canada | CANDU 750A | 868 | 1979 | |
| Bruce nuclear power plant A3 | Canada | CANDU 750A | 865 | 1978 | |
| Bruce nuclear power plant A2 | Canada | CANDU 791 | 836 | 1977 | |
| Qinshan nuclear power plant 3-1 | China | CANDU 6 | 728 | 2002 | |
| Qinshan nuclear power plant 3-2 | China | CANDU 6 | 728 | 2003 | |
| Cernavodă nuclear power plant 1 | Romania | CANDU 6 | 706 | 1996 | |
| Point Lepreau nuclear power plant 1 | Canada | CANDU 6 | 705 | 1983 | |
| Cernavodă nuclear power plant 2 | Romania | CANDU 6 | 705 | 2007 | |
| Embalse nuclear power plant | Argentina | CANDU 6 | 656 | 1984 | |
| Wolsong nuclear power plant 3 | South Korea | CANDU 6 | 624 | 1998 | |
| Wolsong nuclear power plant 2 | South Korea | CANDU 6 | 599 | 1997 | |
| Wolsong nuclear power plant 4 | South Korea | CANDU 6 | 589 | 1999 | |
| Pickering nuclear power plant B5 | Canada | CANDU 500B | 540 | 1983 | |
| Pickering nuclear power plant B6 | Canada | CANDU 500B | 540 | 1984 | |
| Pickering nuclear power plant B7 | Canada | CANDU 500B | 540 | 1985 | |
| Pickering nuclear power plant B8 | Canada | CANDU 500B | 540 | 1986 | |
| Sellafield (Candu) nuclear power plant 1 | United Kingdom | Cancelled | CANDU | 740 | — |
| Sellafield (Candu) nuclear power plant 2 | United Kingdom | Cancelled | CANDU | 740 | — |
| Cernavodă nuclear power plant 3 | Romania | Pre-construction | CANDU 6 | 720 | 2031 |
| Cernavodă nuclear power plant 4 | Romania | Pre-construction | CANDU 6 | 720 | 2032 |
| Cernavodă nuclear power plant 5 | Romania | Cancelled | CANDU 6 | 706 | — |
| Wolsong nuclear power plant 1 | South Korea | Retired | CANDU 6 | 683 | 1983 |
| Gentilly nuclear power plant 2 | Canada | Retired | CANDU 6 | 675 | 1983 |
| Pickering nuclear power plant A1 | Canada | Retired | CANDU 500A | 542 | 1971 |
| Pickering nuclear power plant A2 | Canada | Retired | CANDU 500A | 542 | 1971 |
| Pickering nuclear power plant A3 | Canada | Retired | CANDU 500A | 542 | 1972 |
| Pickering nuclear power plant A4 | Canada | Retired | CANDU 500A | 542 | 1973 |
| Douglas Point (AECL) nuclear power plant | Canada | Retired | CANDU 200 | 218 | 1968 |
| Karachi nuclear power plant 1 | Pakistan | Retired | CANDU-137 MW | 100 | 1972 |
| Nuclear Power Demonstration (NPD) nuclear power plant | Canada | Retired | CANDU | 25 | 1962 |
Sources
- AtkinsRéalis (Candu Energy) — company source
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release — CC BY 4.0 · retrieved 2026-09-06