The Olkiluoto triple reactor, which had been producing electricity at 1285 megawatts for over a week, was abruptly shut down on Sunday evening due to an unforeseen issue with the turbine plant. According to Teollisuuden Voima (TVO), the power plant’s electricity production would resume on Wednesday at one in the morning, and if this happens, it will be reflected in the price of electricity on Tuesday.
TVO’s communications manager, Johanna, stated that they would immediately inform about the fault of the turbine plant once more details are known. However, she did not speculate on the cause of the failure but emphasized that it is not similar to last spring’s trial run.
The Olkiluoto power plant has faced numerous problems and delays over the years but finally started regular electricity production in spring 2021 with a power of about 1540-1560 megawatts. Fingrid has been restricting its operations due to concerns about its impact on the grid’s stability and reliability.
The second reactor stopped for weeks in August due to a fault in the generator’s cooling system. This issue was compounded by other factors that limited electricity production and transmission capacity, which led to fluctuations in electricity prices on the stock market at that time.