Here is the latest 2020 chart.
You say it takes decades to switch to electric cars, here in Europe the last petrol car will be sold in 2030, don’t know how they want to upgrade the grid in just 9 years,...
I do not know about Europe, but it would not be a problem in the U.S., according to what I have read. As I said above, the only thing you have to increase is fuel, for nighttime generation. The smart controllers should prevent blackouts during the day. As I said, the power companies offer a discount to customers who use these. The power company remotely turns off air conditioning or electric car chargers during peak hours.
You would have more than 9 years to upgrade, because the average car lasts for 11 years these days. (https://www.caranddriver.com/r…ny-miles-does-a-car-last/) I think that is the half-life, meaning about half of all cars are still in service after 11 years. Not long after that, most will wear out. The decline is not steady for the whole life of the car. It accelerates after 11 years. Very few last for 20 years. Anyway, in 2030 there will still be many gasoline vehicles in use in Europe. The number will gradually decline. In 2041, about half of them might be in service. But maybe not, because before that, most gasoline stations will go out of business, forcing gasoline car owners to switch to electricity. I illustrated this trend here, on pages 2 and 3: