Green hydrogen and electrolysis technology will be central to the future energy market, but with many competing technologies, it is hard to get an objective overview. However, Nami et al. (2022) provide just that, with a thorough techno-economic comparison of different alkaline (AEC) and solid oxide (SOEC) electrolysis technologies.

Nami et al. (2022) model the cost and the entire electrochemical system of two AEC types (high and low pressure/temperature) and four SOEC variants (high and low pressure with and without “free” steam). The models are used to forecast the cost of “green” hydrogen for the different electrolysis technologies compared to the cost of “grey” hydrogen produced from natural gas. Results show that the SOEC technology will outperform the AEC by 2030 and that the CO2 tax needed to make green hydrogen competitive will decrease with time.

Nami, Hossein, Omid Babaie Rizvandi, Christodoulos Chatzichristodoulou, Peter Vang Hendriksen, and Henrik Lund Frandsen. 2022. “Techno-Economic Analysis of Current and Emerging Electrolysis Technologies for Green Hydrogen Production.” Energy Conversion and Management 269 (August). https://doi.org/10.1016/j.enconman.2022.116162