Electricity needs are expected to rise significantly as we convert heating and transportation to electric.

Not as much as you might think: one of the links I gave suggests only an overall 10% increase if the entire country switches to EVs. I found another link suggesting a 25% average increase if we all switch to heat pumps -- still within what the grid is sized for already.

Heat Pumps will be the big driver but there’s a lot of spare electricity capacity over night in most European countries