"Ideally the future"
When, how ?
Yes ideally the future can have magical technologies that will solve humanity problems. We had this magical "nuclear" thing in the sixties. Today a huge majority of electricity worldwide is produced by coal, oil and gaz.
Hydrogen is a no go, you're loosing 70% into transforming electricity to hydrogen and back to electricity. And no you cannot simply "throw money at it" to turn 70% into 5%.