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インドネシア運輸部門における気候資金と緩和成果の連携:検証済み排出削減量とそのコストからのエビデンス

Linking Climate Finance to Mitigation Outcomes in Indonesia’s Transportation Sector: Evidence from Verified Emission Reduction and Its Cost (原題)

Akma Yeni Masri, Rizaldi Boer, Muhammad Firdaus, Liliek Sofitri

Sustainability📚 査読済 / ジャーナル2026-08-19#気候金融対象セクター: transport
DOI: 10.3390/su18168488
原典: https://doi.org/10.3390/su18168488

🤖 gxceed AI 要約

日本語

本研究は、インドネシア運輸部門の気候資金配分と検証済み排出削減量の関係を2018~2022年のデータで分析。33の緩和策をASIフレームワークで分類し、1tCO2e削減あたりの費用を推定した。直接緩和策(大量公共交通)は低コストで効果的であり、2030年までに30~170億ドルの資金が必要と試算。支出ベースでなく成果連動型の資金メカニズムを提言する。

English

This study analyzes the relationship between climate finance and verified emission reductions in Indonesia's transportation sector using 2018-2022 data. It categorizes 33 mitigation actions under the ASI framework and estimates the cost per tCO2e reduced. Direct mitigation actions like mass transit expansion are cost-effective; the financing requirement by 2030 is estimated at USD 3-17 billion. The authors recommend shifting from expenditure-based to performance-based financing.

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

日本の運輸部門の脱炭素施策(次世代自動車、公共交通)にも、費用対効果と資金連携の視点が重要。SSBJ開示でScope 3輸送排出の削減コストを説明する際に参考になる。

In the global GX context

This paper contributes to global climate finance scholarship by linking investment to verified mitigation outcomes, a key principle for results-based climate finance and Article 6. It offers a replicable cost-assessment methodology for transport decarbonization in emerging economies.

👥 読者別の含意

🔬研究者:Provides a cost-based methodology to link climate finance to verified emission reductions in transport, useful for similar studies in other developing countries.

🏢実務担当者:Highlights the cost-effectiveness of mass transit investments, informing corporate Scope 3 reduction strategies and green investment decisions.

🏛政策担当者:Demonstrates the need for performance-based climate finance allocation to achieve NDC targets efficiently.

📄 Abstract(原文)

Decarbonizing the transportation sector depends not only on the scale of mitigation programs, but also on whether financing systems are capable of generating measurable emission reductions. In Indonesia, climate finance allocation remains substantially below the level required to achieve the transportation-sector target under the Enhanced Nationally Determined Contribution (ENDC). At the same time, mitigation planning rarely establishes a clear relationship between financial expenditure and verified greenhouse gas (GHG) reduction outcomes, making policy effectiveness difficult to assess. This study examines the relationship between climate finance and mitigation outcomes in Indonesia’s transportation sector using verified emission reduction data and realized mitigation expenditures during 2018–2022. A cost-based assessment approach was applied to estimate the financing required to reduce one ton of CO2e across direct and indirect mitigation actions. The analysis identified 33 mitigation actions categorized under the Avoid–Shift–Improve (ASI) framework and evaluated their contribution to sectoral emission reduction. The results indicate substantial variation in mitigation costs among intervention types. Direct mitigation actions, particularly mass public transportation expansion, generated larger emission reductions at relatively lower costs than enabling or indirect measures. On average, reducing 1 tCO2e in Indonesia’s transportation sector requires approximately USD 184–305 (IDR 3–5 million). Based on the transportation-sector ENDC target, the estimated financing requirement by 2030 ranges from USD 3–17 billion (IDR 42–69 trillion). The findings suggest that climate finance policies should move beyond expenditure-oriented approaches toward financing frameworks that explicitly connect investment allocation with verified mitigation performance.

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