About Olkiluoto 3 nuclear reactor (OL3):
- OL3 is an EPR (European Pressurized Water Reactor) located in Finland.
- It is built by the French-led Areva-Siemens consortium.
- It is the most powerful nuclear reactor in Europe, with a capacity of generating 1,600 megawatts.
- It covers approximately 14% of Finland’s electricity demand.
Q1) What is a Pressurized Water Reactor?
The pressurized water reactor (PWR) is a type of nuclear reactor used to the generate electricity and propel nuclear submarines and naval vessels.[3] They make use of light water (ordinary water, as opposed to heavy water) as their coolant and neutron moderator.
Source: Europe’s largest nuclear reactor enters service in Finland
Last updated on November, 2025
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