this post was submitted on 13 Nov 2024
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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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World’s second-largest solar plant goes online in China (www.pv-magazine.com)
submitted 3 days ago by [email protected] to c/[email protected]
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A large project with cost data.

At $1.6B project cost for 3gw, that is a little over 50c/watt, and would typically produce energy costs excluding financing of 1c/kwh.

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[–] [email protected] 3 points 2 days ago (2 children)

I wonder what they are doing with possible surplus of energy.

[–] [email protected] 2 points 2 days ago

Interestingly enough, I have not heard of large hydrogen projects from water electrolysis in China.

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

They've yet to deploy grid batteries at scale, afaik. While EVs are doing great in China (over 50% of sales), and V2G is active near term expected there, behind the meter batteries is always great for solar. It uses the transmission line at higher capacity including the possibility of reverse charging overnight for morning/cloudy next day power boost.

Inner Mongolia includes a lot of desert, and so future expansions with batteries should have plenty of available land to boost existing transmission utilization.

Overall, they've yet to announce climate goals representative of the pace of renewables/battery production that they have. They might not mind just replacing daytime use of coal, while ramping coal up at night instead of leveraging batteries that makes transmission much cheaper, and can easily beat coal prices during night only operation.