Finland's new reactor, Olkiluoto 3, resumed electricity production on Tuesday evening, following a shutdown of the system on Sunday, according to operator Teollisuuden Voima (TVO).
A fault in the facility's turbine system prompted the automated shutdown.
As of Wednesday morning OL3 was running at a slightly reduced capacity, and the reactor is expected to resume full electricity production on Wednesday evening, according to TVO communications chief, Johanna Aho.
At 8am on Wednesday, OL3 had an electricity output of around 900 megawatts (MW). The facility has a peak output capacity of around 1,600 MW, and is able to provide approximately 14 percent of the country's electricity production.
Following this week's shutdown, spot prices for electricity saw a major spike on Tuesday, at one point nearly hitting one euro per kilowatt-hour.
Wednesday's spot prices were set significantly lower than the previous day's.
According to grid operator Fingrid, the peak kWh spot price on Wednesday was set at 12.1 cents, while the lowest spot price was set to drop to 1.58 cents per kWh.
The price decrease is being attributed to the return of OL3 as well as windy conditions boosting wind power generation efforts.
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