Environment & Energy

NNadir

(36,183 posts)

5. Wait? They use hydrogen to make electricity and then generate electricity? I know the hydrogen scammers despise the...

Reply to Caribbeans (Original post)

Mon Dec 30, 2024, 08:05 PM

Dec 2024

...laws of thermodynamics, but branching into perpetual motion machines?

It's actually not surprising, since the whole purpose of the scam is to greenwash fossil fuels, which is, after all, the real source of hydrogen in China. The claim that it's made by electrolysis from so called "renewable energy" is bullshit, has always been bullshit, and will remain bullshit.

The paper cited below gives, in real numbers, just how dirty hydrogen is in terms of carbon dioxide emitted to make hydrogen in China.

Subsidizing Grid-Based Electrolytic Hydrogen Will Increase Greenhouse Gas Emissions in Coal Dominated Power Systems Liqun Peng, Yang Guo, Shangwei Liu, Gang He, and Denise L. Mauzerall Environmental Science & Technology 2024 58 (12), 5187-5195

The text is clear enough.

From the introductory text:

... Currently, nearly all hydrogen in China is either produced directly from fossil fuels (55% from coal gasification and 14% from steam methane reforming (SMR)) or as a byproduct of petroleum refining (28%), with only 1% coming from water electrolysis. (2) Producing 1 kg of coal- or SMR-based hydrogen emits roughly 19 and 10 kg of CO2, respectively. (3) In 2020, hydrogen production from fossil fuels in China emitted ∼322Tg of CO2, equivalent to 25% of total CO2 emissions from industrial processes, a number expected to rise with increasing hydrogen demand. (4) Industrial processes include production of nonmetallic mineral products, chemical, and metal products, as well as production and consumption of halocarbons and sulfur hexafluoride. (4)

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The bold, italics and underlining is mine.

EST: Chinese Hydrogen Production Is Making Climate Change Worse.

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