An Environmental Impact Analysis of the Transition to Electric-Propulsion Ships Toward Net-Zero Shipping: A Case Study of Vessels Operated by a Korean Shipping Company
ネットゼロ海運に向けた電気推進船への移行の環境影響分析：韓国船社が運航する船舶のケーススタディ (AI 翻訳)
Chybyung Park
🤖 gxceed AI 要約
日本語
本研究は、韓国船社が運航する大型コンテナ船2隻を対象に、従来のディーゼルから電気推進への転換が温室効果ガス排出に与える影響を、LCAとシミュレーションを組み合わせたLive-LCAフレームワークで分析。ディーゼル・電気方式では排出が26%増加する一方、陸上電力によるバッテリー推進では40%削減可能だが、電力系統の炭素強度に大きく依存することを示した。
English
This study evaluates well-to-wake global warming potential for two large container ships operated by a Korean company under four propulsion scenarios using a Live-LCA framework that couples life cycle inventory with dynamic power and propulsion modeling. Diesel-electric operation increases annual GWP by over 26% versus conventional diesel, while battery-electric charged from the Korean grid reduces GWP by about 40%. However, the climate benefit depends heavily on the carbon intensity of the electricity source, highlighting the need for low-carbon electricity for electric propulsion to be effective.
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
本論文は韓国船社の事例だが、日本の海運業界でもSSBJに基づくGHG排出開示が進む中、電気推進船の環境影響評価にLive-LCA手法を応用できる。日本の電力系統特性に応じた分析が今後の課題。
In the global GX context
This study provides operational and route-grounded life cycle assessment for large container ships, contributing to the evidence base for shipping decarbonization under the IMO's GHG strategy and for transition finance decisions. The Live-LCA framework can be adapted to other routes and grids globally.
👥 読者別の含意
🔬研究者:Offers a dynamic LCA methodology (Live-LCA) that improves upon static inventories for assessing propulsion transitions in shipping.
🏢実務担当者:Shipping companies and fleet operators can use the Live-LCA framework to evaluate the emission impacts of electrification routes under their specific operating conditions and grid.
🏛政策担当者:Regulators designing shipping decarbonization policies should note the sensitivity of electric propulsion benefits to grid carbon intensity, which may require parallel grid decarbonization.
📄 Abstract（原文）
Decarbonizing ocean-going shipping requires decision-grade environmental evidence for propulsion transitions, yet conventional LCA relies on static inventories that inadequately represent dynamic operations and route-dependent renewable generation. This study evaluates well-to-wake (WtW) Global Warming Potential (GWP) for two large container ships operated by a Korean company under four scenarios: conventional diesel main engine, diesel–electric with onboard generator, full battery-electric supplied by shore electricity from the Republic of Korea grid, and battery-electric with a route-resolved solar PV system. A Live-LCA (LLCA) framework couples LCI data with MATLAB/Simulink power and propulsion modeling driven by actual operating profiles and route environmental conditions to generate operational inventories for impact calculation. Diesel–electric operation increases annual WtW GWP by over 26% for both ships versus the baseline of a conventional diesel main engine, whereas shore-electric battery operation is able to reduce WtW GWP by around 40% versus diesel–electric. With limited PV installation, additional reductions are marginal. Depending on electricity profile, it can increase battery-electric GHG emissions by approximately 27%, highlighting sensitivity to electricity evolution. Overall, electric propulsion delivers climate benefits only when paired with low-carbon electricity, and LLCA enables operationally and route-grounded LCA for large container ships.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/jmse14050505first seen 2026-06-29 06:18:19
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