Climate benefits of Power-to-X pathways utilizing green hydrogen – A contradiction of regional and international emission savings

Clicks: 31
ID: 327227
2026
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Emerging

Ranked #25 of 45 articles by views in journal of modern power systems and clean energy

Most read Least read

Bar heights use a square-root scale.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
Abstract Renewable Power-to-X solutions can provide extensive emission savings by replacing fossil feedstocks directly in the producing country or through exports. This study is based on the hypothesis that different PtX pathways contribute to emission savings in varying amounts. Emission savings from different PtX pathways were quantified by conducting life-cycle assessments using Finland as a case study. Surplus e-products substitute conventional products in Central Europe. The investigated H2 utilisation pathways were e-H2, e-methane, e-methanol, e-fuels, e-ammonia, and green steel. For Finland, grey H2 was always replaced by e-H2. The largest emission savings were achieved when producing green steel (∼17.5 MtCO2-eq). The second largest savings can be achieved when utilising e-H2 for fuel-cell vehicles (∼15 MtCO2-eq), followed by e-ammonia (∼14 MtCO2-eq) and e-methanol (∼11 MtCO2-eq) production. In some cases, production-related emissions exceed the benefits of substitution in Finland if there is insufficient demand for the product, such as in the case of e-ammonia and e-methanol.Production pathways that maximize global emission reductions may differ substantially from those that maximize regional reductions, particularly when domestic demand is low relative to low-carbon production potential. This discrepancy arises because production-based accounting allocates manufacturing emissions to the producing region, even when the resulting low-carbon products deliver emission reductions elsewhere. These contradictions in emission savings may render climate mitigation actions inefficient if only national targets are considered.
Reference Key
openalex_W7204624327 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Jani Sillman, Patel Gulam Husain, Jouni Havukainen, Rami Alfasfos, Satu Lipiäinen, Hannu Karjunen, Mari Tuomaala, Risto Soukka
Journal journal of modern power systems and clean energy
Year 2026
DOI
10.1093/ce/zkag060
URL
https://academic.oup.com/ce/advance-article-pdf/doi/10.1093/ce/zkag060/70870351/zkag060.pdf
Keywords Keywords not found

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.