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    Maalismaa power plant in the river Iijoki
    29.7.2024 News Power plant news

    The Regional State Administrative Agency for Northern Finland has issued its decisions on the change applications regarding fish stock management obligations in the Iijoki and Kemijoki rivers

    The Regional State Administrative Agency for Northern Finland has issued its decision on the change applications submitted by the Centre for Economic Development, Transport and the Environment for Lapland in 2017 regarding stocking…

    Pohjolan Voima. Vas. Tommi Hansen-Haug PVO:lta ja Istvan Selek Kierikin voimalaitoksella suorittamassa testejä Hype säätövoima projektissa.
    27.5.2024 News Press releases

    The world’s most advanced turbine governor enhances hydropower’s balancing power ability – collaboration between PVO-Vesivoima and the University of Oulu lead to a patent application​ 

    PVO-Vesivoima and the University of Oulu have jointly developed a completely new type of turbine governor that can regulate the electricity production of hydropower plants significantly more accurately than before. In addition to ac…

    29.2.2024 News Power plant news Press releases

    Pohjolan Voima investigates building a pumped hydroelecric energy storage (PHES) in Kemijärvi

    Pohjolan Voima, one of Finland’s largest energy companies, is investigating the possibility of building a pumped-storage power station in the area of Lake Kemijärvi. Pumped-storage power stations are used in the mountain regions…

    Isohaara powerplant
    29.1.2024 News Power plant news Press releases

    PVO-Vesivoima and Caverion partnership continues with hydropower plants

    PVO-Vesivoima Oy and Caverion continue their partnership. Caverion will continue to be responsible for the operation and maintenance of PVO-Vesivoima’s hydropower plants on the Iijoki and Kemijoki rivers and Melo hydropower plant on…

    Cathing lampreys in the river Iijoki. Photo: Kai Tirkkonen
    27.11.2023 News Press releases

    Transport of Iijoki and Kemijoki lamperns falls short in 2023 – more research is required

    The transport of lamperns, also known as river lampreys, in the rivers Iijoki and Kemijoki concluded in October. Every year in both rivers, migrating lamperns are caught downstream from power plants and moved upstream of the plants…

    Kierikki hydropower plant
    23.11.2023 News Press releases

    Investment decision made for PVO-Vesivoima’s first ultracapacitor energy storage facility – set to strengthen rapid balancing power needed for the increasing renewable energy

    PVO-Vesivoima, a subsidiary of Pohjolan Voima Oyj, has decided to invest in a 3 MW ultracapacitor energy storage project. Based at the Kierikki hydropower plant along the river Iijoki, the project will be a first for PVO-Vesivoima a…

    Portimokoski power plant
    14.11.2023 News Power plant news Press releases

    Natural fishways built at Portimokoski in Ylitornio

    With the municipalities of Pello and Ylitornio, Tornionlaakson Voima Oy has received permission from the Regional State Administrative Agency for Northern Finland to build two natural fishways at Portimokoski rapids. The by-pass cha…

    The modernisation works of the stator of PVO-Vesivoima Oy's Raasakka hydropower plant's second generating unit have been completed and the generating unit is again in operation on the Iijoki river.
    6.11.2023 News Power plant news Press releases

    The modernisation of the Raasakka hydropower plant’s machinery strengthened reliable production on the Iijoki river

    The modernisation works of the stator of PVO-Vesivoima Oy’s Raasakka hydropower plant’s second generating unit have been completed and the generating unit is again in operation on the Iijoki river. The replacement investment will en…

    Raasakka hydropower plant
    9.10.2023 News Power plant news

    More precise control of discharges at a hydropower plant brings significant energy savings  

    More precise control of the discharged volume of water at the Raasakka hydropower plant on the Iijoki river introduces significant energy savings for PVO-Vesivoima.

    Fishheart fishway in operation at Raasakka power plant
    2.10.2023 News Power plant news Press releases

    Fishheart fishway in operation at Raasakka power plant

    The Fishheart fishway at PVO-Vesivoima Oy’s Raasakka power plant on the Iijoki River has proved attractive for fish. So far, 112 individual salmon and trout, as well as many other fish species such as river lampreys, have used the…

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