Electrolytic hydrogen projects for this purpose are popping up now. "Scatec partners with Fertiglobe and the Sovereign Fund of Egypt to develop green hydrogen

Electrolytic hydrogen projects for this purpose are popping up now. "Scatec partners with Fertiglobe and the Sovereign Fund of Egypt to develop green hydrogen as feedstock for ammonia production in Egypt" https://scatec.com/2021/10/14/scatec-partners-with-fertiglobe-and-the-sovereign-fund-of-egypt-to-develop-green-hydrogen-as-feedstock-for-ammonia-production-in-egypt/ https://scatec.com/2021/10/14/scatec-partners-with-fertiglob... In 1960 Egypt built a large electrolytic hydrogen plant powered by hydroelectricity from the Aswan Dam, also for making fertilizer. Now renewable electricity from other sources is reviving electricity-to-ammonia systems. In energy terms, the [fertilizer] industry is dominated by the Kima plant at Aswan which at full production would use 7.6 x 10^15 joules of energy per annum to produce 112,000 tonnes of nitrogen as prilled calcium ammonium nitrate. The plant was built in 1960 to utilize the spare hydropower available from the Aswan Dam to produce hydrogen by electrolysis for ammonia manufacture. The plant has operated successfully since its inception and is currently one of the largest plants in the country. From U.S. Department of Energy report, "An Assessment of the Energy Requirements and Selected Options Facing Major Consumers Within the Eyptian Industrial and Agricultural Sectors", 1978 https://www.osti.gov/servlets/purl/5610349 https://www.osti.gov/servlets/purl/5610349 One interesting side effect of these electrolytic hydrogen projects may be cheaper heavy water (deuterated water) and deuterium. The Norwegian heavy water plant that was famously sabotaged during World War II [1] was primarily a fertilizer plant that made electrolytic hydrogen using hydroelectricity. Electrolysis concentrates deuterium in the water left behind in the production cells, due to ordinary light hydrogen being liberated from water faster (kinetic isotope effect). Electrolysis is a very expensive way to make heavy water alone, but if you need to electrolyze a lot of water for hydrogen anyway, heavy water can be a much lower cost co-product. [1] https://en.wikipedia.org/wiki/Norwegian_heavy_water_sabotage https://en.wikipedia.org/wiki/Norwegian_heavy_water_sabotage