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Loviisa

Loviisa, nuclear power plant in Finland, operates 2 pressurized water reactors with 1,014 MW net installed capacity and has been in service since 1977.

It is Finland's oldest nuclear plant, operating since 1977. Unit Loviisa 1 has been operating for 49 years, since 1977. Its 1,014 MW net are enough to supply about 3,190,000 households.

Country
Finland
Units
2
Technology
PWR
Net capacity
1,014 MWe
First grid connection
1977
Operator
Fortum Power and Heat
Owner
Fortum Power and Heat Oy
Status
Operating
Operating capacity
1,014 MWe
net electrical
Units
2
2 operating
First start-up
1977
Loviisa
Photo: Wikimedia Commons · author and license

Units

UnitTypeModelStatusMWeMWtConstruction startGrid connectionClosureLoad factor
Loviisa 1Pressurized water (PWR)VVER-440 (V-213)Operating5071,500May 1, 1971Feb 8, 1977—86.7 % (2024)
Loviisa 2Pressurized water (PWR)VVER-440 (V-213)Operating5071,500Aug 1, 1972Nov 4, 1980—90.0 % (2024)

Data: IAEA PRIS · Wikipedia · updated on Sep 17, 2026

Loviisa 1, a 507 MWe PWR (VVER-440 (V-213)), started construction in 1971, was connected to the grid in 1977 and is still operating, with a 86.7% load factor in 2024.

Loviisa 2, a 507 MWe PWR (VVER-440 (V-213)), started construction in 1972, was connected to the grid in 1980 and is still operating, with a 90% load factor in 2024.

Operator: Fortum Power and Heat.

Owner: Fortum Power and Heat Oy (Loviisa 1, Loviisa 2).

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