Hydropower

The hydraulic fishway Fishheart will be in use at the lowermost power plant on the Iijoki river, PVO-Vesivoima Oy’s Raasakka power plant, from 2023 to 2025. The system will be used not only as a migration solution for fish to bypa…

PVO-Vesivoima is planning the commissioning of a 3 MW ultracapacitor at its Kierikki power plant on the Iijoki river. An ultracapacitor is a short-term energy reserve that improves the performance of a hydropower plant and meets the…

The first bored pile wall used to seal an earth dam in Finland was constructed at the Melo hydropower plant on the Kokemäenjoki river in Nokia. The project involved the deepest bored pile wall structure in Finland, as well as the l…

Modern hydropower is an essential part oh the nordic electricity system. Modern hydropower involves developing new innovations that are actively used in production. Moden hydropower is a responsible choice for both the environment a…

The first bored pile wall used to seal an earth dam in Finland is being constructed at the Melo hydropower plant. The dam, located on the Kokemäenjoki river in Nokia, will be repaired using nearly 200 bored piles. The project invol…

This summer, Finland’s first downstream migration route with catching equipment for migratory salmon has been introduced at Haapakoski rapids on the Iijoki river. The downstream migration route was implemented as part of the exten…

The stator of the Raasakka hydroelectric power plant’s second generating unit will be replaced in 2023. The investment is part of PVO-Vesivoima’s long-term modernisation programme and will strengthen the Raasakka power plant’s…

Measures to return migratory fish to the old natural riverbed of the Iijoki river at Raasakka continue. The municipality of Ii, PVO-Vesivoima Oy and the South and North Ii fishery collectives have signed an agreement on the developm…

The repair of the Melo power plant’s dam on the Kokemäenjoki river in Nokia will continue until the end of the year. The work includes the construction of a bored pile wall which will ensure the dam’s watertightness. The dam br…

PVO-Vesivoima has implemented new process control and optimisation software to control all the company’s hydropower plants along the Iijoki river. The system was supplied by Honeywell. The river regulation software is the most adv…