Price of electricity in Finland peaks at 2.35€/kWh today. Keeping my tiny granny cottage warm costs me over 50 euros for a single day. It's negative 25C (-13F) outside.
That massive spike of 50c/kWh at the left looks tiny compared to today even though that's already insanely expensive
Spot rate pricing for electricity is uncommon among households for exactly this reason. The price is most likely the result of energy market conditions, rather than nefarious actors in the market intentionally manipulating market conditions.
Usually there's a company that would be absorbing that risk of price fluctuations by charging slightly more than the baseline normal so that they can afford to charge households at a loss for the short periods where the price spikes as insanely as this.