Olkiluoto nuclear power plant

Olkiluoto nuclear power plant in context

By gross operating capacity Olkiluoto nuclear power plant is the 1st largest of 2 operating nuclear sites in Finland, holding 77% of the country's operating capacity, and ranks 33rd of 172 worldwide.

Its operating units started up between 1979 and 2023; the median unit is 44.0 years old, younger than the median of 45.0 in Finland.

The 3 units with both construction and grid dates on record took 4.3 to 16.6 years (median 4.6) from construction start to grid connection; the median across all reactors connected in the 1980s is 7.3 years.

The nearest other tracked nuclear sites are Forsmark nuclear power plant (200 km) and Loviisa nuclear power plant (283 km).

2 operating units are rated differently now from their design net capacities: Unit 1 +34.8% and Unit 2 +34.8%.

Build time by unit

Nearest tracked nuclear sites

How these are worked out: ranks use gross operating capacity; ages count from the start-up year on record, as on the age page; build times run from construction start to grid connection, as on the build-times page; ratings are the tracker's net and design net capacity, as on the uprates page. Distances are straight-line between exact positions, so a site with only an approximate position gets none. A unit missing a date or a rating is left out of the figure that needs it.