Contrary to last week's forecasts, electricity spot prices are very low over the Christmas holidays with power to be sold for below one cent per kilowatt-hour (kWh) on Christmas Eve.
The traditional Finnish Christmas sauna, therefore, could be very affordable this year.
The spot price will peak in the morning, when it will exceed eight cents per kWh. In the afternoon the price will drop quickly.
The low prices are down to three factors.
Mild weather means consumption is not as high as it could be, with domestic heating less of a drain that it is during colder spells.
Grid operator Fingrid had forecast Monday's consumption to run at 10,600 megawatt-hours (MWh), but in the morning it was actually less than 10,000 MWh. The difference is roughly equivalent to the output of one nuclear power plant reactor.
Electricity production is also higher than expected, thanks to windy conditions moving Finland's wind turbines. From Christmas Eve afternoon, wind power production will hit 5,000 MW according to Fingrid.
That's equivalent to around three Olikluoto 3 reactors.
Christmas shutdowns at industrial users are another important factor in reducing demand. With factories shut down for the holidays, there is more power for domestic users and no price spikes when people are cooking Christmas dinner and enjoying their yuletide saunas.