グリーンファイナンスが代替燃料船の普及と関連する温室効果ガス排出削減に与える影響
The Impact of Green Finance on the Penetration of Alternative-Fuel Vessels and Associated Greenhouse Gas Emissions Reduction (原題)
Pei Liu, Dong-Ping Song
🤖 gxceed AI 要約
日本語
本研究はシステムダイナミクス手法を用い、グリーンクレジットと炭素取引が代替燃料船の普及とGHG排出削減に与える影響を分析する。中国の主要港に寄港するフィーダー船隊への適用の結果、グリーンクレジットは普及を大きく加速し排出を削減する一方、炭素取引は価格が低く効果が限定的であった。船価やメタノールのグリーン化速度、従来燃料価格も排出量に影響し、複数の金融手段の組み合わせが海運脱炭素化を促進すると示唆する。
English
Using system dynamics, this study models how green credit and carbon trading affect alternative-fuel vessel adoption and GHG emissions. Applied to a Chinese feeder fleet, green credit strongly accelerates uptake and cuts emissions, while carbon trading has weaker effect due to low prices. Vessel price, methanol greening pace, and fuel prices also matter, suggesting combined financial instruments best drive maritime decarbonization.
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
海運はScope 3排出の主要源であり、荷主企業のサプライチェーン排出削減に直結する。日本でも国際海運の脱炭素化とグリーン融資・カーボンプライシングの設計は、SSBJや有報でのScope 3開示対応を進める企業にとって重要な示唆を含む。
In the global GX context
Maritime shipping is a major source of Scope 3 emissions for global supply chains. This study offers empirical evidence on how green credit and carbon pricing can accelerate fleet decarbonization, informing transition finance and carbon market design under frameworks like ISSB and TCFD.
👥 読者別の含意
🔬研究者:システムダイナミクスによる金融・炭素政策の海運脱炭素への影響評価手法を提供。
🏢実務担当者:荷主・海運企業はグリーン融資や炭素価格が船隊更新とScope 3削減に与える影響を理解できる。
🏛政策担当者:炭素取引価格の低さが排出削減効果を制限するため、グリーンクレジットとの組み合わせ設計が有効。
📄 Abstract（原文）
The renewal of vessel fleet with the penetration of alternative- and green-fuel vessels is critical for the maritime transport sector to meet the net-zero greenhouse gas (GHG) emission target around 2050. However, the high upfront investment of alternative-fuel vessels is a major barrier to their market penetration. This study proposes a system dynamics method to investigate the impact of green credit and carbon trading on the penetration of alternative-fuel vessels and associated GHG emissions reduction. This framework consists of two interrelated models: a maritime transport model, which simulates freight transport processes, including freight demand, traffic flow, fleet evolution, and GHG emissions, and a green finance support model, which quantifies the mechanism of green credit and carbon trading on increasing shipping companies’ intention to use alternative-fuel vessels. The proposed model is applied to a feeder vessel fleet serving a major seaport in China. The results show that the implementation of green credit significantly accelerates the penetration of alternative-fuel vessels and reduces GHG emissions from the vessel fleet. In contrast, carbon trading shows a weaker effect on mitigating GHG emissions than green credit primarily due to its low price. The sensitivity analysis reveals that other factors, such as vessel price, the pace of the greening of methanol, and price of conventional fuels also significantly influence GHG emissions from the vessel fleet. These results indicate that a combination of multiple green financial instruments can facilitate the decarbonization of maritime transport sectors.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.65904/3083-0850.2026.01.02first seen 2026-10-02 05:16:26
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