this post was submitted on 31 Jan 2026
611 points (99.5% liked)

Technology

82329 readers
4371 users here now

This is a most excellent place for technology news and articles.


Our Rules


  1. Follow the lemmy.world rules.
  2. Only tech related news or articles.
  3. Be excellent to each other!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
  9. Check for duplicates before posting, duplicates may be removed
  10. Accounts 7 days and younger will have their posts automatically removed.

Approved Bots


founded 2 years ago
MODERATORS
 

The world’s largest particle accelerator now has an important new mission: heating thousands of homes. The Large Hadron Collider at CERN has begun to funnel the waste heat from its cooling system to a new residential and commercial area in the nearby French town of Ferney-Voltaire, with the new linkup expected to be able to heat several thousand homes at once.

top 36 comments
sorted by: hot top controversial new old
[–] dukemirage@lemmy.world 101 points 1 month ago (2 children)

The headline makes it sound like this is unintentional.

[–] ripcord@lemmy.world 43 points 1 month ago (2 children)

It must be some sort of base pessimism thing. My automatic assumption was that it was benevolent and intentional.

[–] Tarquinn2049@lemmy.world 20 points 1 month ago (2 children)

It might be about general knowledge of how colliders work, the sentence structure does it no favours, but half way through I realised it had to be intentional/beneficial due to knowing the only possible way a collider generates heat as a byproduct.

Where as someone that doesn't know much about colliders might read that sentence and assume it's like radiative heat or something.

[–] dukemirage@lemmy.world 9 points 1 month ago

It was just comical to imagine the collider would heat up the residents directly like an enormous microwave oven. In the usual wording, households are warmed, and indirectly the residents.

[–] ulterno@programming.dev 2 points 1 month ago

All heat transfer is radiative if you zoom in enough.

[–] jaybone@lemmy.zip 3 points 1 month ago

Yeah like “the use of combustion engines will heat millions of French homes in the next ten years.”

[–] Janx@piefed.social 47 points 1 month ago (3 children)

They say if you stand in the middle of the LHC, you'll be warm for the rest of your life...

[–] MagicShel@lemmy.zip 20 points 1 month ago

Amidala: Because they'll gain super powers right? Right?

Anakin: smiles

[–] zaphod@sopuli.xyz 10 points 1 month ago

Maybe someone like should check if this is true. Anatoli Bugorski I am looking at you.

[–] Akasazh@lemmy.world 5 points 1 month ago

I know you mean in the centre of the beam, but you can stand in the middle of the loop of the LHC and be perfectly fine

[–] DeathByBigSad@sh.itjust.works 24 points 1 month ago (1 children)

We must stop the Organization, SERN.

El. Psy. Congroo.

[–] Twofacetony@lemmy.world 12 points 1 month ago
[–] miked@piefed.social 24 points 1 month ago (3 children)

This thing has been running for over 15 years and they just figured out they could use the waste heat?

[–] Kushan@lemmy.world 19 points 1 month ago (1 children)

It's not really the same thing today as it was 15 years ago. It also hasn't been running continuously that whole time. They regularly stop experimenting to build new extensions onto it.

I visited the LHC back in 2019 and at the time they were expanding it even then.

[–] miked@piefed.social 0 points 1 month ago (2 children)

I doubt you can answer but did it just become economically viable?

I'd bet it was viable earlier and someone just figured this out.

Makes me wonder recycling the heat from AI data centers.

[–] philpo@feddit.org 3 points 1 month ago (1 children)

Datacenter heat is actually a very good source for local heating networks and a lot of European countries either already mandate to consider it when feasible, have introduced legislation that will make it mandatory over the next years or are at least supporting it financially.

It's actually fairly common to do so for a long time here - from waste incineration, steel mils, nuclear plants, etc.

Personally I heat my office from my server rack and my old job did heat one of their office buildings from the heat generated by the data center in the basement. (And funny enough also did partially cool it from that source)

[–] miked@piefed.social 1 points 1 month ago

I'm in the US so this is not a priority for the current admin.

[–] ulterno@programming.dev 3 points 1 month ago* (last edited 1 month ago)

recycling the heat from AI data centers

I'd say the govts should make it mandatory for anyone making a large enough data centre, to create a heat transfer infrastructure to nearby localities. The locals can then buy hot water (metered) via pipelines from the local govt and that can go towards paying for the power extension tax that the data centre has to pay.
Oh yes, there needs to be a power extension tax first, which is levied on anyone setting up data centres to use for wasteful stuff like AI, Crypto-mining etc. Of course, that only matters if they are taking power from the grid and/or building near populated areas (any amount of population).

[–] whyNotSquirrel@sh.itjust.works 9 points 1 month ago

I guess someone has to finance the infrastructure to connect towns, might be some new ecological regulations that pushed this

[–] yermaw@sh.itjust.works 6 points 1 month ago

Better late than never

[–] Remember_the_tooth@lemmy.world 19 points 1 month ago (1 children)

I know this is probably a mundane engineering thing, but it sounds like a ramp up to a Black Mirror episode. We just need some kind of social commentary. Maybe the waste energy secretly contain MacGuff-ons, a known chrono-hazard. Only the poorest people will use it, for lack of alternative?

[–] RichardDegenne@lemmy.zip 4 points 1 month ago

You might want to play Psycho Patrol R.

[–] TigerAce@lemmy.dbzer0.com 15 points 1 month ago* (last edited 1 month ago) (1 children)

So random French households have portals summoning demons? Damn, I wish I was French.

Joke, of course I didn't wish I was French. But a demon portal would be awesome in my house though.

(I'm referencing to the comspiracy of Cern using the hedron collider to summon Osiris from the underworld)

[–] billhead@sh.itjust.works 2 points 1 month ago

Sounds like Kvatch to me.

[–] FauxLiving@lemmy.world 12 points 1 month ago (3 children)

Wait until the people find out that the waste heat is contained in liquid hydrogen at 3 kelvin.

[–] fullsquare@awful.systems 30 points 1 month ago (1 children)

the waste heat comes from cryogenics system that keeps all of this helium at below 3K. turns out you need to spend a lot of energy to cool down things to temperatures this low

[–] FauxLiving@lemmy.world 12 points 1 month ago (2 children)

Yes, well Mr. Smartypants, did you consider that maybe Mr. Freeze and his family were living in Ferney-Voltaire instead of your 'technically correct' explanation?!

[–] mushroommunk@lemmy.today 6 points 1 month ago

Real "But I don't want to cure cancer" pterodactyl to Spider-Man moment

[–] RichardDegenne@lemmy.zip 2 points 1 month ago

Username checks out

[–] Imgonnatrythis@sh.itjust.works 5 points 1 month ago

Pretty sure they use celcius in France bruh

[–] kossa@feddit.org 4 points 1 month ago

You can always freeze excess heat in case you need it later. Just microwave it, when needed!

[–] HelluvaKick@lemmy.world 9 points 1 month ago (1 children)

I've been playing Steins;Gate while snowed in and now super apprehensive about anything CERN related lol

[–] Morphit@feddit.uk 2 points 1 month ago

El Psy Kongroo...

[–] M0oP0o@mander.xyz 6 points 1 month ago

THE LOOP MUST FLOW

[–] Donebrach@lemmy.world 1 points 1 month ago

Who let the worlds largest particle accelerator steal excess heat from the LHC??