Sizewell nuclear power plant B
Gross capacity
1,250MW
Sizewell nuclear power plant B is a pressurised water reactor unit at Sizewell nuclear power plant in United Kingdom rated at 1,250 MW gross. It is operating. Commercial operation began 22 Sep 1995.
Specification
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | SNUPPS |
| Size | Largeabove 300 MWe |
| Coolant | Light water |
| Moderator | Light water |
| Gross capacity | 1,250MW |
| Net capacity (reference) | 1,198MW |
| Net capacity (design) | 1,188MW |
| Thermal output | 3,425MWt |
| NSSS vendor | not on record |
| Typical enrichment | 3–5% U-235 |
Ownership & location
| Site | Sizewell nuclear power plant |
|---|---|
| Unit | B |
| Country | United Kingdom |
| Owner | EDF Energy Ltd100% |
| Operator | EDF Energy |
| Coordinates | 52.2145, 1.6206 |
Live status
Elexon REMIT, Great Britain, declared availability
State
…
loading
Available capacity
…
Last 90 days, one cell per day
Declared: an outage or limit the operator has announced. No outage declared is not a confirmation that the unit is running.
See every unit outside the US.
Fuel chain for this unit
Fuel form
Uranium dioxide pellets in zirconium-alloy cladding
Enrichment
3–5% U-235
Who makes this assembly
- China National Nuclear Corporation PWR fuel assemblies
- ENUSA Industrias Avanzadas PWR and BWR fuel assemblies
- Framatome PWR fuel assemblies
- KEPCO Nuclear Fuel PWR fuel assemblies
- Mitsubishi Heavy Industries PWR fuel assemblies
- Westinghouse Electric Company PWR fuel assemblies
Supply position
United Kingdom runs 1 operating unit on PWR (square-lattice) fuel. 6 fabricators are documented for it. No documented fabricator is based in United Kingdom. Country exposure
Upstream
Enriched fuel means this unit sits downstream of five conversion plants and four enrichment operators holding 88% of world capacity between the top three.
Fabricator capability is recorded against reactor type and model line, not against named units,
utilities do not publish fuel contracts. See the fuel chain.
Timeline
- 18 Jul 1988Construction start
- 31 Jan 1995First criticality
- 14 Feb 1995Grid connection
- 22 Sep 1995Commercial operation
Other units at Sizewell nuclear power plant
| Unit | Status | Gross MW |
|---|---|---|
| Sizewell nuclear power plant A1 | Retired | 245 |
| Sizewell nuclear power plant A2 | Retired | 245 |
| Sizewell nuclear power plant C1 | Pre-construction | 1,600 |
| Sizewell nuclear power plant C2 | Pre-construction | 1,600 |
Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06 · this unit last researched by GEM on 2024-05-17
- GEM.wiki entry (further reading) , CC BY-SA 4.0, linked, not quoted
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data