There is talk of a “hydrogen economy.” Australia’s prime minister, desperate to distract from his government’s failures, has promised to put lots of money into it in the (completely unlikely) event of being re-elected.
It’s a mirage.
Hydrogen is not a fuel, but a battery, because you need energy to produce it. And it has two major problems compared to other batteries: the tiny hydrogen molecule leaks out of everything, and it is highly corrosive.
Lloyd Alter has calculated how many solar panels it would take to fill a car with hydrogen. He demonstrates the ridiculousness of the idea.
His short essay is well worth a read.