294
Grid-Scale Bubble Batteries Will Soon Be Everywhere (spectrum.ieee.org)
submitted 1 month ago by kalkulat@lemmy.world to c/technology@lemmy.world
68 comments fedilink hide all child comments

"This giant bubble on the island of Sardinia holds 2,000 tonnes of carbon dioxide. But the gas wasn’t captured from factory emissions, nor was it pulled from the air. It came from a gas supplier.... "The facility compresses and expands CO2 daily in its closed system, turning a turbine that generates 200 megawatt-hours of electricity, or 20 MW over 10 hours."

you are viewing a single comment's thread
view the rest of the comments
[-] brucethemoose@lemmy.world 3 points 1 month ago* (last edited 1 month ago)

I was just about to bang out that they must lose a lot of heat from the compression. But apparently not! That’s amazing.

I’m struggling to think of systems that would significantly outperform “75%+”. Chilled superconducting coils? Those are expensive, and would fail rather catastrophically.

this post was submitted on 22 Dec 2025
294 points (98.4% liked)

Technology

80724 readers
3908 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
L3s@lemmy.world
enu@lemmy.world
technopagan@lemmy.world
L4s@lemmy.world
L3s@hackingne.ws