this post was submitted on 11 Feb 2024
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That is a waste of solar. It's more efficient to put in batteries then kinetic. If there is no more batteries to put it in, you transmit the power over wires.
With hydrogen it's wasteful to create from electricity, then wasteful to turn into kinetic. Its wasteful to store as it's the smallest atom so escapes easily, it's low density so needs compressing. Then, to move it, you have to move storage around instead of just transmit over wires.
Exactly. And just to be clear, because it's annoying me every time people gloss over this, it's not just some percentage points lost in the conversion of energy, it's actually ~75% of the energy that goes to waste, from energy production to the final motion of the wheels. EVs on the other hand only waste ~25% of energy. Even with the wishful thinking that the hydrogen can simply be created in times of energy overproduction, you can't beat a factor of 3.
Hydrogen is basically free energy though. Using solar to pull it from the atmosphere and then it goes in an ICE motor. Stations like these can supply hydrogen basically anywhere without needing to run wires to it. Providing fuel to ICE powered hydrogen cars.
It's not free though. There's such a thing called 'opportunity costs': If I have the choice between a 'free candy machine' that spits out one candy every hour, and one that spits out three candies every hour, I know what I'll choose.
I also wasn't aware you ware talking about ICE powered hydrogen cars, where the efficiency is even more comically abysmal.
Cool your candy machine requires 10xs the investment and maybe even more because supercharger stations need substations near them. They can't run on a 400amp box.
It seems to me like you're comparing the costs for building one at the most out there location possible. Putting the questions aside if building anything in such locations would ever be profitable enough for something to be build, or if fast-charging is absolutely necessary: This absolutely isn't true for the majority/average location, where your solution is the one that prohibitively expensive, not to mention that a good chunk of people wouldn't even need a charging station at all when they can charge at home, maybe even using the solar panels already on their roof.
There may be some limited space for hydrogen ICE cars on the market, but it won't be the solution that'll see widespread adoption and support by car manufacturers as long as there's a much cheaper and comfortable solution for 99.9% of people on earth (number made up).
Though if anything, I predict that specialized EVs with swappable batteries (which already exist) that can then be charged slowly with solar will become viable as they're much cheaper and efficient in those areas.