Olkiluoto
| Olkiluoto Nuclear Power Plant | |
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Olkiluoto Nuclear Power Plant in 2015.
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 Location of Olkiluoto Nuclear Power Plant in Finland
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| Country | Finland |
| Location | Eurajoki |
| Coordinates | 61°14′13″N 21°26′27″E / 61.23694°N 21.44083°ECoordinates: 61°14′13″N 21°26′27″E / 61.23694°N 21.44083°E |
| Status | Operational |
| Construction began | 1973 |
| Commission date | 10 October 1979 |
| Owner(s) | Teollisuuden Voima Oy |
| Nuclear power station | |
| Reactor type | 2 × BWR 1 x PWR (EPR) |
| Reactor supplier |
ASEA-Atom (units 1 and 2) Areva (unit 3) |
| Cooling source | Gulf of Bothnia |
| Cooling towers | no |
| Power generation | |
| Units operational | 2 × 880 MW |
| Make and model |
Stal-Laval (units 1 and 2) Siemens (unit 3) |
| Units under const. | 1 × 1,600 MW |
| Units planned | 1 (1,000–1,800 MW) |
| Nameplate capacity | 1,760 MW |
| Capacity factor | 92.5% |
| Annual gross output | 14,268 GW·h |
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Website www |
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The Olkiluoto Nuclear Power Plant (Finnish: Olkiluodon ydinvoimalaitos) is on Olkiluoto Island, which is on the shore of the Gulf of Bothnia in the municipality of Eurajoki in western Finland. It is one of Finland's two nuclear power plants, the other being the two-unit VVER Loviisa Nuclear Power Plant. The plant is owned and operated by Teollisuuden Voima (TVO), a subsidiary of Pohjolan Voima.
The Olkiluoto plant consists of two Boiling Water Reactors (BWRs) each producing 860 MW of electricity. Unit 3, an EPR reactor, is still under construction, but various problems with workmanship and supervision have created costly delays which have been the subject of an inquiry by the Finnish nuclear regulator Säteilyturvakeskus (STUK). In December 2012, Areva estimated that the full cost of building the reactor will be about €8.5 billion, or almost three times the delivery price of €3 billion. A license for a fourth reactor to be built at the site was granted by the Finnish parliament in July 2010, but discontinued by the government in September 2014. TVO has the option to reapply for the license in the future.
According to Financial Times in December 2014 construction of unit 3 has descended into farce as it is currently expected to open nine years late and several billions of euros over budget.
Units 1 and 2 consists of two BWRs each producing 880 MW of electricity. The main contractor was ASEA-Atom, now a part of Westinghouse Electric Sweden AB. Turbine generators were supplied by Stal-Laval. The units' architecture was designed by ASEA-Atom. The reactor pressure vessels were constructed by Uddcomb Sweden AB, and reactor internal parts, mechanical components by Finnatom. The electrical equipment was supplied by Strömberg. Unit 1 was constructed by Atomirakennus and unit 2 by Jukola and Työyhtymä. Unit 1 achieved its initial criticality in July 1978 and it started commercial operations in October 1979. Unit 2 achieved its initial criticality in October 1979 and it started commercial operations in July 1982.
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