My point is why write off a new technology still being developed when it clearly has the potential to be part of the solution on decarbonisation.
There are small performance gains to be made in hydrogen systems, but unless I'm mistaken, there's a hard physical limit to how much electricity you can make those little hydrogen molecules make when they're in a fuel cell, and there's a similar hard physical limit as to how much energy you need to put into water when undertaking electrolysis, to split those hydrogen molecules from the oxygen molecules. It's further complicated by the argument on what pressure do you store your hydrogen at, 350bar or 700bar, because there's efficiency losses (heat, at least) as you pump to ever higher pressures, but that's potentially offset by other gains.
It's the same hard physical limits you have with batteries - there is only so much electricity 1kg of a battery electrode can hold.
With regards to Perth to Inverness electrification, on much firmer ground here, it's a relatively easy project and will be relatively inexpensive per stkm - only point of concern at this early stage would be around Killiecrankie and some of those odd structures like Tilt Viaduct which might need a little fettling.
