this post was submitted on 09 May 2025
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Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

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Renewable energy companies eyeing off abandoned mines in Queensland (www.abc.net.au)
submitted 2 months ago by [email protected] to c/[email protected]
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Green Gravity's renewable-powered technology stores energy by lifting heavy objects up a mineshaft.... It calculates it can store two gigawatt-hours of energy from the sites surrounding Mount Isa.

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[–] [email protected] 2 points 1 month ago (1 children)

I would hazard a guess that a 40t-rated winch, 40t-rated 100m wire rope, and 40t-rated steel bucket to hold the scrap each cost more than a 10kWh battery.

[–] [email protected] 1 points 1 month ago* (last edited 1 month ago) (1 children)

Don't forget the generator/engine.
I didn't claim it was cost or ressource efficient in any way.

[–] [email protected] 2 points 1 month ago

That would likely be the winch, but yes, you'll need a nice large regenerating motor drive.