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Natural H2: Green Contender with Uncertain Climate Impact

Updated: Nov 23, 2023

Geologic hydrogen is gaining commercial interest as a potentially green alternative to natural gas-derived hydrogen. While it produces water upon burning, it does have greenhouse gas implications due to altered atmospheric chemistry, extending the lifespan of gases like methane, which contribute to global warming. The first assessment of geologic hydrogen suggests that its emissions are comparable to or lower than hydrogen produced from renewable sources. However, uncertainties remain, with some experts questioning the study's estimates and emphasising the need to understand hydrogen emissions better. While geologic hydrogen offers advantages in not requiring renewable energy, its environmental impact and scalability as a significant energy source by 2050 are still uncertain, and it might not replace other lower-emission hydrogen production methods in advanced stages of development.

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