References
IEA Global Hydrogen Review 2026 tracks the hydrogen production and demand worldwide (https://www.iea.org/reports/global-hydrogen-review-2026).
IEA Hydrogen TCP works mainly on production, storage, safety and industrial uses of hydrogen (http://ieahydrogen.org/).
IEA Advanced Fuel Cells and Electrolyzers TCP works mainly on hydrogen for fuel cell application (https://ieafuelcell.com/) .
[2] Liebherr to premiere its hydrogen prototype engines at Bauma 2022. Press release October 10.th, 2022
[5] Commercially operated Wärtsilä engine runs on 25 vol% hydrogen blend, a world first. Wärtsilä Corporation, Press release 23 March 2023

