Abstract
Europe has ambitious goals for future hydrogen production. The increasing production of green hydrogen demands for research on the different environmental effects of hydrogen production methods. This study compiles comprehensive and comparable values of the life cycle emissions of three electrolyzer technologies: alkaline water electrolyzers, proton exchange membrane water electrolyzers and solid oxide electrolysis cells. A comparison of hydrogen production via wind and solar electricity is listed. Additionally, the changes in land usage required for the hydrogen production process are considered. The emission comparison reveals that hydrogen produced using wind energy is environmentally more sustainable than using solar energy, regardless of the electrolyzer technology.
| Original language | English |
|---|---|
| Pages (from-to) | 6-17 |
| Journal | European Journal of Energy Research |
| Volume | 5 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 24 Oct 2025 |
| MoE publication type | A1 Journal article-refereed |
Funding
This research was carried out in the JustH2Transit project funded by the Strategic Research Council within the Research Council of Finland, decision 358422.
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
-
SDG 12 Responsible Consumption and Production -
SDG 13 Climate Action
Keywords
- electrolysis
- greenhouse gas emissions
- land use
- life cycle analysis
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