My friend Ernesto Ciorra, CO innovation and sustainability officer at ENEL (90th largest company in the world by revenue, with €140 billion in 2022 and the second largest power company in the world by revenue after the State Grid Corporation of China) published a post on linkedin on the fact that batteries+electric lines are preferable to hydrogen because energy conversion efficiency to/from hydrogen is very low. (an undoubtable fact of physics)
This argument, though, does not buy me fully in.
My point is: in a world where energy production in some moments has a 0 (or negative) cost, who cares if we waste a lot of it in the conversion ?
Perhaps we should consider the cost/impact of transporting energy after it has been converted to some transferable mode, to the point where it is reconverted and used.
I mean, if we already have in place gas pipes, why not using those to dispatch energy instead of building new electric lines ?
For cars, why not using FCEV hydrogen fuel cells, so that we could refill in few minutes ? the dependence on platinum (which incidence, BTW, is being reduced) poses less strategic issues than rare earths used in batteries.
Am I missing something ?