Hydrogen is a fuel that, when consumed in a fuel cell, produces only water.

Producing hydrogen fuel requires energy, as pure hydrogen gas does not occur naturally on Earth. Hydrogen fuel can come from a variety of energy sources, including both non-renewable sources such as natural gas and nuclear power, or renewable sources like biomass, solar and wind.

**The carbon footprint associated with hydrogen fuel depends on the energy source used to create it. 

pathways:

01.11.2024 / TechExplore / Fueling greener aviation with hydrogen: Model explores electrification of regional and short-range turboprop aircraft

20.10.2022 / Recharge via Hydrogen Insight / ‘Will no longer be considered’ | Hydrogen trains up to 80% more expensive than electric options, German state finds

08.09.2022 / Recharge / DNV rules out pure hydrogen as a future long-distance shipping fuel

31.05.2022 / Bloomberg / “Miracle Fuel” Hydrogen Can Actually Make Climate Change Worse

19.05.2022 / Energy.gov / DOE Announces Nearly $25 Million to Study Advanced Clean Hydrogen Technologies for Electricity Generation