The record was set on Saturday after the storm battered northern parts of England.
National Grid ESO said: “Today saw the most wind ever on Great Britain’s electricity system with a provisional record of 19.5GW of wind power.”
According to data from the electricity system operator, the power output of wind turbines reached 50.9%, generating 19,311MW.
It added: “Although we recognise this milestone on the way to a zero carbon future, we are also thinking of those affected by Storm Malik.”
As the storm caused at least three fatalities, Met Office issued a new warning as Storm Corrie brought severe gales yesterday.
The national meteorological service said: “Injuries and danger to life is likely from large waves and beach material being thrown onto coastal roads, sea fronts and properties.”