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Taxpayers’ Willingness to Pay for Global Decarbonization via Renewable Energy Official Development Assistance: A Discrete Choice Experiment in South Korea

再生可能エネルギーODAを通じた地球規模脱炭素への納税者の支払意思額：韓国における離散選択実験 (AI 翻訳)

Kyung-Seok Ki, Bo-Min Seol, Seung-Hoon Yoo

Energies📚 査読済 / ジャーナル2026-05-15#政策
DOI: 10.3390/en19102371
原典: https://doi.org/10.3390/en19102371

🤖 gxceed AI 要約

日本語

韓国の再生可能エネルギーODAに対する国民の支払意思額を、全国代表サンプル1000人を用いた離散選択実験と混合ロジットモデルで推定。温室効果ガス削減と専門家育成への支払意思額が高く、電化や評判向上は低い。年齢や国家志向による選好の異質性も確認され、気候重視のグリーン援助ポートフォリオ設計への示唆を与える。

English

This study estimates South Korean taxpayers' willingness to pay for renewable energy ODA using a discrete choice experiment with 1,000 respondents and a mixed logit model. GHG reduction and expert training receive the highest WTP, while electrification and reputation enhancement are lower. Preference heterogeneity by age and national orientation suggests policy implications for designing climate-focused green aid portfolios.

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

日本ではODAを通じた再生可能エネルギー支援が増加傾向にあり、国民の支持形成は今後の援助政策の持続可能性に直結する。本研究成果は、日本のODAポートフォリオ設計や気候変動対策への国民理解を深める上で参考になる。

In the global GX context

This study provides donor-country evidence on public preferences for renewable energy ODA, relevant to global discussions on climate finance and just transition. It offers insights for designing aid portfolios that align with public support, complementing TCFD/ISSB-aligned climate finance strategies.

👥 読者別の含意

🔬研究者:Provides empirical evidence on public WTP for renewable energy ODA, useful for climate finance and policy design research.

🏢実務担当者:Offers insights for organizations involved in ODA or green aid projects to align with public preferences.

🏛政策担当者:Informs the design of climate-focused ODA portfolios and public communication strategies.

📄 Abstract（原文）

South Korea’s official development assistance to the energy sector has increased steadily over the past decade, reaching USD 232.20 million in 2024. Yet public willingness to pay for renewable energy official development assistance remains largely unknown. This study uses a discrete choice experiment with 1000 nationally representative South Korean respondents and a mixed logit model to estimate marginal willingness to pay for key project attributes, including electrification, greenhouse gas reduction, firm expansion, expert training, and reputation enhancement. The results show that greenhouse gas reduction and expert training receive the highest willingness to pay, followed by firm expansion. Electrification and reputation enhancement receive relatively low support. The findings also reveal substantial preference heterogeneity, with younger and nationally oriented respondents placing greater value on economic returns. These results provide new donor country evidence on public preferences for renewable energy official development assistance and offer policy implications for designing a more climate-focused and socially supported green aid portfolio.

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