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Olkiluoto 3 (OL3)

  • OL3 Project
  • Why OL3?
  • Delivery of the power plant unit
  • Licensing process
  • Technology
  • Economic efficiency
  • Effective safety features
  • Quality management
  • Training
  • OL3, surrounding area and Finland
  • OL3 material
  • Technical data of OL3 plant unit


    Net electric output approx. 1 600 MW
    Reactor thermal output 4 300 MW
    Total efficiency over 37%
    Fuel uranium oxide UO2
    Annual fuel consumption approx. 32 t
    Average fuel enrichment level 2 - 5% U-235
    Amount of uranium in reactor approx. 128 t
    Annual electric generation approx. 13 TWh
    Sea water flow 57 m3/s
    Turbine speed 1 500 rpm
    Number of turbines 1 high-pressure + 3 low-pressure
    Main steam temperature 290°C