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ProspectiveLife Cycle Assessment of Alternative Fuelsand Carbon Capture in Swiss Gas-Fired Power Plants

スイスのガス火力発電所における代替燃料と炭素回収の将来ライフサイクル評価 (AI 翻訳)

Laura Berra, Giulia Iacono, André Bardow, Gerardo Escamilla, Eleonora Bargiacchi, Christian Moretti (19250899)

Figshare📚 査読済 / ジャーナル2026-06-22#CCUSOrigin: EU対象セクター: power
DOI: 10.1021/acs.energyfuels.5c05190.s001
原典: https://figshare.com/articles/journal_contribution/Prospective_Life_Cycle_Assessment_of_Alternative_Fuels_and_Carbon_Capture_in_Swiss_Gas-Fired_Power_Plants/32762691

🤖 gxceed AI 要約

日本語

本研究は、スイスのガスタービン発電所における代替燃料（バイオメタン、e-燃料）と炭素回収（CCS/CCU）のライフサイクル評価を実施。国内バイオメタンは長期的に気候影響を約90%削減し、CCSと組み合わせれば正味排出量をマイナスにできる。一方、e-燃料は環境トレードオフがあり、パイプライン輸送が多様な影響を最小化する。

English

This study conducts a prospective LCA of alternative fuels (biomethane, e-fuels) and carbon capture (CCS/CCU) in Swiss gas turbines. Domestic biomethane reduces climate impacts by nearly 80% in the near term and approaching 90% in the long term, and can achieve net-negative emissions with CCS. E-fuels show trade-offs across environmental categories, and pipeline transport is superior to multimodal transport.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本のガス火力発電所でもバイオメタンやe-燃料の利用が検討されており、CCS導入の費用対効果を評価する際に本LCA手法が参考になる。特に2035年・2050年の時間軸で代替燃料の環境負荷を比較している点は、日本のエネルギー基本計画策定に示唆を与える。

In the global GX context

This paper contributes to global discussions on the role of gas turbines in net-zero systems by providing a comprehensive LCA of alternative fuels and CCS. It highlights the importance of system-level environmental assessments beyond climate metrics, relevant for ISSB's approach to multi-capital impacts and transition finance criteria.

👥 読者別の含意

🔬研究者:Provides a prospective LCA framework for evaluating alternative fuels and CCS in gas-fired power plants, useful for energy system modeling and decarbonization pathway studies.

🏢実務担当者:Offers quantitative insights for power plant operators considering switching to biomethane or e-fuels and integrating CCS, including trade-offs in environmental impacts.

🏛政策担当者:Highlights need for holistic environmental criteria in energy policy beyond emissions, relevant for designing subsidies and infrastructure for alternative fuels and CCS.

📄 Abstract（原文）

Carbon-neutral energy systems will rely heavily on electrification and intermittent renewables, thereby increasing the need for flexible technologies such as gas turbines. Using alternative fuels in gas turbines could reduce greenhouse gas emissions and support net-zero goals, but their full life-cycle emissions impact has not been evaluated yet. This study presents a prospective life cycle assessment (LCA) of simple cycle gas turbines (SCGTs) in Switzerland, evaluating their performance with various alternative fuels and the potential integration of carbon capture technologies. The analysis considers domestically produced biomethane (from wood chips or biogas) and four e-fuelse-hydrogen, e-methane, e-ammonia, and e-Fischer-Tropsch (e-FT) fuelssynthesized in regions with cost-effective renewable electricity in Spain, Iceland, and the Netherlands. Regarding carbon capture, we investigate both storage (CCS) and utilization (CCU), considering storage sites in Italy and Norway. The assessment covers multiple impact categories across 2035 and 2050. The results show that domestic biomethane provides a practical and climate-friendly option, reducing life-cycle climate impacts by nearly 80% in the near term and approaching 90% in the long term. In contrast, e-methane does not exceed an 80% reduction in the long term even under its most favorable production pathways. Both biomethane and e-methane can offer net-negative emissions if combined with CCS. Domestic CCU does not offer any environmental advantage if liquefying and transporting hydrogen (H<sub>2</sub>), instead of directly importing e-methane via pipeline. Multimodal transport increases environmental impacts compared to pipeline transport across several categories. Beyond climate impacts, alternative fuel production introduces trade-offs across most categories compared with natural gas. This study underscores that minimizing greenhouse gas emissions alone is insufficient and that system-level assessments are essential to minimize overall environmental impacts in future flexible power systems.

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