Abstract
This is the second article in a planned series analyzing global trends in low-carbon hydrogen production to give worldwide scientists and experts the current stage of knowledge on essential technologies at the period of their industrial emergence. The comparative analysis of global world trends in hydrogen production is based on the data presented in the International Energy Agency (IEA). The article systematically expands the data in the IEA database till October 2021 by including unconsidered projects from the IEA database till October 2022. The data are verified using more than 1000 information sources. The article analyzes 789 completed, ongoing, and planned hydrogen projects in 61 countries with known timeframes between 1975 and 2038 years regarding location, timeframe, hydrogen production technology, end product, end-use sector, electrolysis installed capacity, and zero-carbon estimated normalized production capacity. The results provide changed, confirmed and new trends in hydrogen production up to the 2038. The change in the results while considering 126 electrolysis and 10 non-electrolysis projects with unknown timeframes are discussed. State-of-the-art of studies in the hydrogen energy field relating to hydrogen production projects is provided based on open sources.
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