Talk:Green hydrogen

Energy Low‑importance

	Energy portal This article is within the scope of WikiProject Energy, a collaborative effort to improve the coverage of Energy on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.EnergyWikipedia:WikiProject EnergyTemplate:WikiProject Energyenergy articles
Low	This article has been rated as Low-importance on the project's importance scale.

Environment Low‑importance

	Environment portal This environment-related article is part of the WikiProject Environment to improve Wikipedia's coverage of the environment. The aim is to write neutral and well-referenced articles on environment-related topics, as well as to ensure that environment articles are properly categorized. Read Wikipedia:Contributing FAQ and leave any messages at the project talk page.EnvironmentWikipedia:WikiProject EnvironmentTemplate:WikiProject EnvironmentEnvironment articles
Low	This article has been rated as Low-importance on the project's importance scale.

Climate change Mid‑importance

	This article is within the scope of WikiProject Climate change, a collaborative effort to improve the coverage of Climate change on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Climate changeWikipedia:WikiProject Climate changeTemplate:WikiProject Climate changeClimate change articles
Mid	This article has been rated as Mid-importance on the project's importance scale.
If you are looking for ways to improve this article, we recommend checking out our recommended sources and our style guide

Section sizes

Section size for Green hydrogen (30 sections)
Section name	Byte count	Section total
(Top)	2,607	2,607
Definition	3,248	3,248
Uses	6,170	6,170
Market	8,522	8,522
Projects	13	25,252
Australia	1,782	1,782
Canada	710	710
Chile	888	888
China	3,100	3,100
Egypt	728	728
Germany	575	575
India	2,595	2,595
Japan	446	446
Mauritania	818	818
Namibia	949	949
Oman	785	785
Portugal	1,378	1,378
Saudi Arabia	686	686
Singapore	476	476
Spain	703	703
United Arab Emirates	732	732
United Kingdom	2,503	2,503
United States	4,793	4,793
Public-private projects	592	592
Government support	14,254	14,254
Regulations and standards	3,468	3,468
Research	1,355	1,355
See also	154	154
References	29	29
External links	218	218
Total	65,277	65,277

Economics[edit]

Here are some articles with a lot of economic considerations which I would add now if my schedule wasn't completely smashed this week:

https://gawg.info/files/papers/IRENA20a.pdf

https://www.sciencedirect.com/science/article/pii/S254243512200410X

https://iopscience.iop.org/article/10.1088/1748-9326/acacb5

https://www.hydrogenfuelnews.com/green-hydrogen-technology-cheap/8559025/

Maybe someone else can add the salient points? Sandizer (talk) 14:59, 6 June 2023 (UTC)[reply]

Definition section[edit]

Difficult to comprehend. Need someone with knowledge in this area who can break it down and make the language simpler. Eatthecrow (talk) 16:08, 7 September 2023 (UTC)[reply]

I'll try to sort it out. Part of the issue is we're discussing four things: 1) "green hydrogen", 2) renewable hydrogen, 3) "low-carbon hydrogen", and 4) government policies designed to promote green and low-carbon hydrogen, without explaining the relationship between them or saying what is what. Thanks for bringing this up. Clayoquot (talk | contribs) 16:27, 7 September 2023 (UTC)[reply]

I've started by moving some content to a "Regulations and standards" section as it wasn't about definitions per se.[1] I've done some reading and the story about definitions is complicated enough even without going into how to regulate or certify this stuff. Will try to unpack the complexity now. Clayoquot (talk | contribs) 23:34, 8 September 2023 (UTC)[reply]

I gave the section an overhaul. As often happens with climate articles, our job is complicated by conflicting definitions and "green hydrogen" is most often used as a narrow term of art. I didn't want to add too many citations, but for reference the narrow meaning is used by IRENA, the IEA, the National Academy of Science and the World Nuclear Association. It's interesting that even the World Nuclear Association doesn't call hydrogen from nuclear power "green hydrogen". I tried to see if the IPCC has a definition of green hydrogen and could not find one. Clayoquot (talk | contribs) 23:59, 8 September 2023 (UTC)[reply]

Issues with the first sentence[edit]

The first sentence of the lead currently says green hydrogen is generated from either "renewable energy^[1] or low-carbon power.^[2]" This fails verification - the cited source for low-carbon power actually says that green H2 uses electricity generated from renewables.

The sentence doesn't align with any definition I've seen. The narrow, most-commonly-used definition excludes non-renewable power sources. The broader, less-used definition includes hydrogen generated from low-carbon power, but it also includes things like hydrogen produced by reforming landfill gas or even (some would argue) from fossil gas with CCS. I plan to change this sentence to match the narrow definition, which is now well-cited in the article and supported by additional authoritative sources as described above. Since the main purpose of the first sentence is to tell the reader what the article is about and the article does seem to be about the narrow meaning, I think this is the only definition that belongs in the lead. Clayoquot (talk | contribs) 00:10, 9 September 2023 (UTC)[reply]

References

^ Magill, Jim. "Blue Vs. Green Hydrogen: Which Will The Market Choose?". Forbes. Retrieved 2022-01-22.
^ Jones, Florence (21 February 2023). "EU considers definition of green hydrogen, as rules reignite debate over nuclear". Power Technology. Retrieved 4 September 2023.

Which branch of green hydrogen belongs to?[edit]

whi 49.36.83.238 (talk) 02:09, 4 April 2024 (UTC)[reply]

[:2-1] Magill, Jim. "Blue Vs. Green Hydrogen: Which Will The Market Choose?". Forbes. Retrieved 2022-01-22.

[2] Jones, Florence (21 February 2023). "EU considers definition of green hydrogen, as rules reignite debate over nuclear". Power Technology. Retrieved 4 September 2023.

[1]

[2]