[athenot]

That can be fixed with pricing. Charge more during peak, less during surplus. France relies on nuclear for about 80% of its power. Power is cheaper at night than during the day. As a result, almost all appliances like dishwashers, washing machines, dryers and water heaters come with timers that allow you to use the cheaper power.

[lucaspiller]

The surge pricing is true in the UK too:

https://en.m.wikipedia.org/wiki/Economy_7