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throwaway473825 • today at 12:50 PM • 2 replies • view on HN

I don't think it's a coincidence that China has developed batteries that neuter the advantage that gas had over coal, but I can't stop wondering if we'd already have solved long-term storage if China hated coal as much as oil and gas.


Replies

carefree-bob • today at 1:19 PM

China does not hate oil and gas.

To put things into perspective, China gets half its energy from coal, and about 10% from natgas (increasing to 15% by 2030) and about 20% from oil. China is rapidly increasing natgas use, primarily by building out new pipelines to get more natgas from Russia.

China is also increasing oil consumption as well as exploration, particularly starting with the 14th 5 year plan as well as a special seven year action plan to increase oil production, doing deep water drilling, unconventional (e.g. fracking) drilling as well as a massive shale oil boom. Over the course of that 5 year plan, China discovered more than 225 oil fields and oil production increased from 3.8 million barrels per day to 4.6 mbpd as a result of a ~500 billion CNY investment to increase production. Still China imports about 10 mbpd, so it has developed a massive 1.5 billion barrel strategic reserve, which allows China to weather disruptions in global oil supply even as it races to increase domestic production.

And China is also investing in battery capacity, with installed capacity now at 140 GW or 5% of their energy usage.

The statement that somehow "batteries neuter the advantage that gas has over coal" is not something I understand. Both coal and natgas are reliable forms of energy and are unaffected by battery capacity; you need batteries for unreliable energy such as wind or solar so that you can turn the variable output into something stable that a grid can consume.

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oblio • today at 12:56 PM

China can't hate coal (yet). In case of an armed conflict with the West, they will be cut off completely from oil and gas. Renewables don't cover all their energy needs. So they are building a lot of coal plants as backup.

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