The hot sun of Sardinia solar production has made the EU electricity market volatile. Even now in southern Europe - in Sardinia, Italy, solar production is enough to temporarily lower prices to almost zero. Thus, in the price zone of Sardinia, the wholesale price of electricity between 8 and 13 hours is in the range of 0-4 Euro/MWh. Electricity is almost free. At the same time, the remaining hours of the electricity price are closed at the price of gas production. The price of gas is breaking records, which is reflected in the price of electricity. In summer, a similar picture is observed across Europe.