this post was submitted on 02 Feb 2026
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[–] fullsquare@awful.systems 6 points 1 day ago* (last edited 1 day ago) (3 children)

recently learned about electrofuels. it's a hypothetical rube goldberg scheme where you put enough energy to propel 5-7 EVs in, and pull out enough gasoline to fuel one car. it's sold as a green technology, because now gasoline is green somehow. this spin ignores that it would require massive buildout of renewables + nuclear, and just by doing this electrification of many energy end uses just makes sense, including transportation. (what the fuck is train??) it's also sold as a long term storage for renewables, but i struggle to see how scheme that has less than 30% roundtrip efficiency can be considered "storage". just build more renewables and don't use them all if needed

cui bono?it's a complicated pr campaign by volkswagen group (and some other usual suspects). this is a nonexistent magic solution to a real problem, so it fits a common pattern (and also makes it stubsack material) that also attempts to shank electric vehicles adoption.

if anything, it's backwards because EVs are adopted faster than renewables buildout happens (cars last less than powerplants). if realized, this allows volkswagen group to manufacture regular cars for a long, long time even after oil refining stops. originally, it was proposed as a hypothetical luxury product for antique car owners, because it's physically possible, but doesn't make sense in energy or cost terms. but then someone spun it into potential regular retail good, and also maybe this pr campaign was a part of reason why internal combustion car ban was axed at eu level recently. now that it happened, they don't need to push it so hard

it is something ironic in there that last time this process made sense was in nazi germany, just this time source of syngas is different

[–] rook@awful.systems 3 points 18 hours ago (1 children)

So, the idea isn’t entirely as stupid as it initially sounds. There are two things that you gain from this approach:

  • You can more easily separate your energy generation and consumption. Power lines are lossy, and there are a lot of very sunny and very windy places that are a long way away from where people actually want to live. Massive HVDC infrastructure buildout isn’t cheap or easy.
  • Energy density of chemical fuels is higher than batteries. Being able to travel long distances without convenient nearby power sources is useful… long distance high speed rail isn’t always convenient to electrify, but also long haul flights and rocketry are Quite Difficult to run on batteries.

FWIW, I suspect the cost will end up being even higher, because you’ll start losing the economies of scale that modern vehicle infrastructure has, because normal people will just use EVs.

It can only ever be an intermediate technology anyway. Artificial photosynthesis and more sophisticated fuel cells seem like much more plausible longer-term futures.

[–] fullsquare@awful.systems 3 points 12 hours ago

i think that business logic goes against your first point. spatially: if you have source of cheap energy and want to make money out of it, instead of making little money (by making fuel) why not make more money? (by setting there energy intensive manufacture) this seems to be current meta, with places like iceland and norway making aluminum and nitrogen fertilizers respectively. this can continue in other places and maybe extended to some other industries.

temporally (because there are also sunny and windy days when regular people won't consume all energy): this scheme requires cheap electricity, which is needed for cheap hydrogen. this requires massive renewables buildout, which means electricity is cheap for regular people, which means that every gas stove/heater and car will get replaced with electric ones, both residential and maybe perhaps faster for industrial users (more available loans). this means you have to reinforce transmission grid anyway. this also means cheap hydrogen, and because main input to its production is electricity, it makes more sense to use electricity when it's cheap. this means it's naturally suited to suck up all excess generation (both daily and seasonal), and also if electricity production is seasonal then so should be price of hydrogen. if price of electricity or hydrogen varies, then some industries can suck it up at greater rates when it's cheap. i'm thinking here of aluminum smelting (electricity input, daily variation, already done), or ammonia synthesis, or direct reduced iron smelting. i bet there's more. the point is, maybe you get to avoid storing hydrogen to some degree, because you can effectively store energy in finished or semi-finished goods. you can, for example, make some direct reduced iron and just store it when hydrogen is available, and then smelt it into steel in arc furnace when it's not. fertilizers are already sold in annual cycle and stored long term, and anyway ammonia is much easier to store than hydrogen. how it plays out will depend on energy/hydrogen costs vs storage costs vs capex for overcapacity costs. all together, i think this means that because of large amount of generation needed, you don't actually need to store energy this way at all, because when generation is low then electrolyzers turn off, and something will work at all times, probably. when you're able to do that, you won't need to

in terms of scale, first your lunch is eaten by EVs of various shapes, then by use of hydrogen for transportation (rocketry fits there), then you have to compete with biofuels (jet engine will take anything that burns without ash and can be pumped). then some of methanol will be used for fuel first, because it just works in engines and fuel cells, and it's a step before hydrocarbon synthesis. only then synthetic petroleum makes sense, this basically leaves some aviation (that won't use methanol) and military uses

[–] V0ldek@awful.systems 3 points 1 day ago (1 children)

Wait so they figured how to use renewable energy to create something that still generates emissions? Is this a ploy to get Trump on board with renewables?

[–] fullsquare@awful.systems 2 points 1 day ago* (last edited 1 day ago)

no, silly, the point is to continue doing business as usual (in this case, by inhibiting BEV adoption). that fuel is carbon-neutral but also extraordinarly wasteful. trump's deal is something called "clean coal", which isn't (it suggests carbon capture, but it's not a thing, they marketed normal emissions control like we have in europe as some unusually green innovation)

e: wait it still makes smog so checks out

[–] istewart@awful.systems 2 points 1 day ago (1 children)

if realized, this allows volkswagen group to manufacture regular cars for a long, long time even after oil refining stops. originally, it was proposed as a hypothetical luxury product for antique car owners, because it’s physically possible, but doesn’t make sense in energy or cost terms.

If VW is trying to mainstream this, that tells me they're scrambling to keep milking the premium end of their portfolio that relies on extravagant IC engines (Porsche, Lamborghini, Audi etc.). Very bad sign for them, as the ID Buzz van looks to be a complete failure to the point of "pausing" production, and VW Commercial Vehicles is their backbone in Europe, much like Ford relies on truck sales in the US. I watched a video a few weeks ago that discussed how their European van/utility vehicle portfolio is aging and totally fragmented, to the point that they are selling rebadged Ford Transit vans manufactured in Turkey. I thought it was bad when they were badge-engineering Dodge Caravans for the US market for a few years, but totally bungling the EV van rollout in Europe is seriously bad business for them.

It was also hilarious how the rich guys on the Porsche forums were bad-mouthing the rather sexy Mission X EV supercar concept a couple years ago. No matter how cool a 9,000-rpm flat-six is, letting yourself be driven by the guys who just want you to keep making that forever will not stave off everyone else (now including China and Vietnam!).

[–] fullsquare@awful.systems 3 points 22 hours ago

i don't know if they started it. what i suspect as their contribution is bold claim that electrofuels might be cheaper than regular petrol in the glorious future, while currently they're much more expensive. (30x?) strict prerequisite for their competitiveness is cheap electricity, but at this point they're not needed. there was also Porsche owned wind power to methanol plant, and while methanol works as petrol replacement, all the plastics in contact with it must be resistant which is not a given. i guess the main value of it for them is propaganda, they're not ready for EV manufacture