Energy consumption does not equal useful work though. Much of that non-electrical energy consumption is wasted, e.g. car engines are only about 30% efficient and heat pumps can provide 3-5x the amount of warmth compared to the electrical input required to run. So we’re probably looking at around a 2x increase in electricity consumption rather than 5x.

Add to it the fact that things get more and more efficient, it's questionable if even a 2x increase is in the cards. The EU has added 10 million EVs in the last decade and total electricity consumption hasn't gone up at all. Norway's car sales are majority EV since around five years and over 90% now, and total consumption of electricity went up around 10%.

It could be, for the EU not Norway at least, that there was a consumption uptick but it's hidden because people charge their cars with their own solar panels. But even this is indicative of how the grid will work in the future.