Finland · 61.237, 21.443Olkiluoto
Olkiluoto, nuclear power plant in Finland, operates 3 reactors: 2 boiling water and 1 pressurized water with 3,355 MW net installed capacity and has been in service since 1979.
It is the only plant in Finland running BWR technology. It is the highest-capacity nuclear plant in Finland. Unit Olkiluoto 1 has been operating for 47 years, since 1979.
- Country
- Finland
- Units
- 3
- Technology
- BWR · PWR
- Net capacity
- 3,355 MWe
- First grid connection
- 1979
- Operator
- Teollisuuden Voima
- Owner
- Teollisuuden Voima Oyj
- Status
- Operating
See also: alerts for this plant · every plant in Finland · Vendor: ASEA-Atom / ABB Atom · Vendor: Framatome · every BWR reactor · how a BWR works · every PWR reactor · how a PWR works
Units
| Unit | Type | Model | Status | MWe | MWt | Construction start | Grid connection | Closure | Load factor |
|---|---|---|---|---|---|---|---|---|---|
| Olkiluoto 1 | Boiling water (BWR) | ASEA-Atom BWR, generation III (AA-III) | Operating | 890 | 2,500 | Feb 1, 1974 | Sep 2, 1978 | — | 89.0 % (2024) |
| Olkiluoto 2 | Boiling water (BWR) | ASEA-Atom BWR, generation III (AA-III) | Operating | 890 | 2,500 | Nov 1, 1975 | Feb 18, 1980 | — | 84.6 % (2024) |
| Olkiluoto 3 | Pressurized water (PWR) | EPR | Operating | 1,575 | 4,300 | Aug 12, 2005 | Mar 12, 2022 | — | 70.0 % (2024) |
Data: IAEA PRIS · Wikipedia · updated on Sep 17, 2026
Olkiluoto 1, an 890 MWe BWR (ASEA-Atom BWR, generation III (AA-III)), started construction in 1974, was connected to the grid in 1978 and is still operating, with a 89% load factor in 2024.
Olkiluoto 2, an 890 MWe BWR (ASEA-Atom BWR, generation III (AA-III)), started construction in 1975, was connected to the grid in 1980 and is still operating, with a 84.6% load factor in 2024.
Olkiluoto 3, a 1,575 MWe PWR (EPR), started construction in 2005, was connected to the grid in 2022 and is still operating, with a 70% load factor in 2024.
Operator: Teollisuuden Voima.
Owner: Teollisuuden Voima Oyj (Olkiluoto 1, Olkiluoto 2, Olkiluoto 3).