Blayais
Blayais, nuclear power plant in France, operates 4 pressurized water reactors with 3,640 MW net installed capacity and has been in service since 1981.
Unit Blayais 1 has been operating for 45 years, since 1981. Its 3,640 MW net are enough to supply about 11,500,000 households.
- Country
- France
- Units
- 4
- Technology
- PWR
- Net capacity
- 3,640 MWe
- First grid connection
- 1981
- Operator
- Electricité de France
- Owner
- Electricité de France SA
- Status
- Operating
See also: alerts for this plant · every plant in France · Vendor: Framatome · every PWR reactor · how a PWR works

Units
| Unit | Type | Model | Status | MWe | MWt | Construction start | Grid connection | Closure | Load factor |
|---|---|---|---|---|---|---|---|---|---|
| Blayais 1 | Pressurized water (PWR) | Framatome CP1 (CP1) | Operating | 910 | 2,785 | Jan 1, 1977 | Jun 12, 1981 | — | 60.5 % (2024) |
| Blayais 2 | Pressurized water (PWR) | Framatome CP1 (CP1) | Operating | 910 | 2,785 | Jan 1, 1977 | Jul 17, 1982 | — | 62.4 % (2024) |
| Blayais 3 | Pressurized water (PWR) | Framatome CP1 (CP1) | Operating | 910 | 2,785 | Apr 1, 1978 | Aug 17, 1983 | — | 43.6 % (2024) |
| Blayais 4 | Pressurized water (PWR) | Framatome CP1 (CP1) | Operating | 910 | 2,785 | Apr 1, 1978 | May 16, 1983 | — | 69.0 % (2024) |
Data: IAEA PRIS · Wikipedia · updated on Sep 17, 2026
Blayais 1, a 910 MWe PWR (Framatome CP1 (CP1)), started construction in 1977, was connected to the grid in 1981 and is still operating, with a 60.5% load factor in 2024.
Blayais 2, a 910 MWe PWR (Framatome CP1 (CP1)), started construction in 1977, was connected to the grid in 1982 and is still operating, with a 62.4% load factor in 2024.
Blayais 3, a 910 MWe PWR (Framatome CP1 (CP1)), started construction in 1978, was connected to the grid in 1983 and is still operating, with a 43.6% load factor in 2024.
Blayais 4, a 910 MWe PWR (Framatome CP1 (CP1)), started construction in 1978, was connected to the grid in 1983 and is still operating, with a 69% load factor in 2024.
Operator: Electricité de France.
Owner: Electricité de France SA (Blayais 1, Blayais 2, Blayais 3, Blayais 4).