this post was submitted on 06 Mar 2026
377 points (99.0% liked)

Fuck Cars

15192 readers
1007 users here now

A place to discuss problems of car centric infrastructure or how it hurts us all. Let's explore the bad world of Cars!

Rules

1. Be CivilYou may not agree on ideas, but please do not be needlessly rude or insulting to other people in this community.

2. No hate speechDon't discriminate or disparage people on the basis of sex, gender, race, ethnicity, nationality, religion, or sexuality.

3. Don't harass peopleDon't follow people you disagree with into multiple threads or into PMs to insult, disparage, or otherwise attack them. And certainly don't doxx any non-public figures.

4. Stay on topicThis community is about cars, their externalities in society, car-dependency, and solutions to these.

5. No repostsDo not repost content that has already been posted in this community.

Moderator discretion will be used to judge reports with regard to the above rules.

Posting Guidelines

In the absence of a flair system on lemmy yet, let’s try to make it easier to scan through posts by type in here by using tags:

Recommended communities:

founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
[–] DomeGuy@lemmy.world 1 points 2 days ago (1 children)

Did you perhaps mean hydrocarbons (organic compounds used for fertilizer and fuel) instead of hydrogen (most common element in the universe, 2/3s the atoms and 1/9th the mass of water)

[–] Biobaron@discuss.tchncs.de 0 points 2 days ago (1 children)

We need sustainable energy storage, and hydrogen has few alternatives in this regard. However, the demand for green hydrogen can never be met by renewable energies in Europe. This means that it mainly comes from ships from sunny countries.

[–] DomeGuy@lemmy.world 2 points 2 days ago (1 children)

Hydrogen is terrible for energy storage, and even worse for energy transport. Especially if you're doing electrolysis to split water that you then re-generate with atmospheric oxygen in order to produce electricity. A battery, flywheel, or just pumping water upstream gets you far better efficiency, and shipping literally any product of a hydrogen reaction is likely to be more efficient than shipping a heavy H2 tank back and forth.

Solar power in the EU seem to be increasing by 20% year-over-year. It's hard to see a situation where shipping hydrogen to supply thermal energy to an existing factory would be cheaper than just building a local electrolysis plant and the necessary solar panels. (Unless, of course, you're already invested or employed in selling hydrogen as a direct fossil fuel replacement.)

https://ember-energy.org/latest-updates/wind-and-solar-generated-more-power-than-fossil-fuels-in-the-eu-for-the-first-time-in-2025/

[–] Biobaron@discuss.tchncs.de 1 points 1 day ago

Theoretically, these are fantastic ideas for storing energy. Realistically, however, it is much more universal to run electrolysis. Many countries do not have mountains to build pumped storage facilities, and large-scale flywheels are difficult to implement. Battery farms are not sufficent. However, the transport of electrons or hydrogen is already working today. Natural gas networks are in place and can be used. At the moment, expansion is faltering at the European Union and national borders.

In the long term, everything will come down to hydrogen and electricity, and this hydrogen will have to be imported