Overall, the global demand for pure hydrogen has increased significantly in the last decades. Refining demand for pure hydrogen reached an estimated 38.2 metric tons in 2018, up from some 6.2 metric tons in 1975.
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IEA. (November 18, 2019). Demand for pure hydrogen worldwide from 1975 to 2018 by industrial consumer (in metric tons) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 26, 2026, from /statistics/1133363/pure-hydrogen-demand-by-industrial-customer-worldwide/
IEA. "Demand for pure hydrogen worldwide from 1975 to 2018 by industrial consumer (in metric tons)." Chart. November 18, 2019. ÌÇÐÄÆƽâ°æ. Accessed July 26, 2026. /statistics/1133363/pure-hydrogen-demand-by-industrial-customer-worldwide/
IEA. (2019). Demand for pure hydrogen worldwide from 1975 to 2018 by industrial consumer (in metric tons). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 26, 2026. /statistics/1133363/pure-hydrogen-demand-by-industrial-customer-worldwide/
IEA. "Demand for Pure Hydrogen Worldwide from 1975 to 2018 by Industrial Consumer (in Metric Tons)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 18 Nov 2019, /statistics/1133363/pure-hydrogen-demand-by-industrial-customer-worldwide/
IEA, Demand for pure hydrogen worldwide from 1975 to 2018 by industrial consumer (in metric tons) ÌÇÐÄÆƽâ°æ, /statistics/1133363/pure-hydrogen-demand-by-industrial-customer-worldwide/ (last visited July 26, 2026)
Demand for pure hydrogen worldwide from 1975 to 2018 by industrial consumer (in metric tons) [Graph], IEA, November 18, 2019. [Online]. Available: /statistics/1133363/pure-hydrogen-demand-by-industrial-customer-worldwide/
