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Gravity batteries in abandoned mines could power the whole planet - Techspot

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Black Phoenix:

--- Quote --- Gravity batteries are a potential candidate for storing excess renewable energy, but finding places to install them is a challenge. Researchers have proposed that abandoned mines across the globe could be a cost-effective solution that may also provide jobs.

A study from the International Institute for Applied Systems Analysis (IIASA) proposes that decommissioned mines could be repurposed to operate gravity batteries. Converting old mines could provide enough energy to match the entire planet's current daily electricity consumption.
--- End quote ---


--- Quote from: Black Phoenix on January 23, 2023, 03:00:37 pm ---https://www.techspot.com/news/97306-gravity-batteries-abandoned-mines-could-powe

--- End quote ---

Your link is broken, but here is the actual study: https://www.mdpi.com/1996-1073/16/2/825

Black Phoenix:
Thanks for the study link.

Yes I mistakenly pasted the link to the title and then realized it was wrong and when copied back, since the titles have a limit of characters, it broke the link.

It had been correctly updated this time.

Hmmm. How many mine shafts would you estimate required to reach any significant power output (e.g. that of the Three Gorges Dam that qualifies as a gravity battery as well)?

Don't get me wrong, every little helps, but that seems like a curious idea to me. You might as well propose building a giant clockwork.

So they propose a total of 7 TWh of storage, if it's installed everywhere?

This is how much LNG was transported through 1 cargo terminal in Spain in 1 week. So far I haven't seen a real contender to P2G.


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