The spot price of electricity is set to rise to 31.37 cents per kilowatt-hour (KWh) at 6 pm on Sunday, according to figures on the website Oomi from the Nordic electricity exchange Nord Pool.
In the morning, the price remains below seven cents until 3 pm, when it jumps to nearly 20 cents.
After the evening peak, prices fall, reaching just over 16 cents per kWh at 9 pm.
All these prices include value-added tax (VAT).
Electricity prices for Monday are posted at 3 pm on Sunday.