Nuclear plants are expensive if you have to build a new one, Germany had them but closed them due to ecologists campaigns. And it’s not possible to rely only on wind and solar, you need to burn gas, petrol, coal or, if you don’t want to emit CO2, use nuclear energy. Otherwise you’ll risk having blackouts like the one that happened in Spain last year

Good that they finally realized it

It can be useful for transport or in some industries like steel industry where the alternative is burning coal or LNG.

And not all the solar fields and power plants are in use during the day. Some power plants like nuclear fission reactors can’t stop and relaunch that easily so they are used as the base, while renewables and gas are used according to demand because demand and power production have to be the same. So there are literally moments when solar and wind farms have to shut down during the day bc there is not enough demand for electricity. Using those timezones to produce hydrogen would be a good business

What does hydrogen have to do with the Sun? You can produce the energy necessary for electrolisis from many other sources. Also there was a plan to make a hydroduct from France to Spain to transport green/pink hydrogen.