Households’ Willingness to Pay for Floating Solar Farms on Multi-Purpose Dam Reservoirs: Advancing South Korea’s Sustainable Energy Transition
多目的ダム貯水池における浮体式太陽光発電所に対する家計の支払意欲：韓国の持続可能なエネルギー移行を促進する (AI 翻訳)
Seong-Woo Lee, Min-Ki Hyun, Seung-Hoon Yoo
🤖 gxceed AI 要約
日本語
本研究は、韓国の土地制約と再生可能エネルギー目標に対応するため、多目的ダム貯水池に設置する浮体式太陽光発電所（FSF）に対する家計の支払意欲（WTP）を推定した。全国1000世帯を対象とした仮想評価調査により、平均WTPはkWhあたり26.8韓国ウォン（約1.9米セント）で、これは地上設置型とのコスト差（kWhあたり19ウォン）を上回る。回答の49%がゼロだったが、その多くは抗議反応であった。この結果は、FSFの展開に対する有意な社会的支援を示し、水管理と再生可能エネルギーを統合する政策の可能性を示唆する。
English
This study estimates households' willingness to pay (WTP) for a tariff premium supporting floating solar farms (FSFs) on multi-purpose dam reservoirs in South Korea. Using a contingent valuation survey of 1,000 households, it finds a mean WTP of KRW 26.8/kWh (USc 1.9), exceeding the cost differential between FSF and land-based solar. Despite 49% zero bids (mostly protest responses), results indicate significant public support for FSFs as a land-sparing, water-energy nexus solution, informing sustainable energy transition policies.
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
日本でもダム貯水池を活用した浮体式太陽光発電が注目されており、本研究成果は日本の再生可能エネルギー拡大と水資源管理の統合政策の設計に示唆を与える。特に土地制約の厳しい日本において、消費者の追加負担許容度を定量的に示した点が参考になる。
In the global GX context
This paper provides empirical evidence on consumer willingness to pay for floating solar farms, a land-sparing renewable energy technology applicable globally to dam reservoirs. The findings inform energy transition policies by quantifying public support for multifunctional infrastructure that integrates renewable energy with water management, relevant for countries facing land constraints and pursuing climate adaptation.
👥 読者別の含意
🔬研究者:Advances stated preference methods for bundled environmental attributes in energy valuation, with implications for water-energy nexus research.
🏢実務担当者:Provides WTP estimates and cost benchmarks for companies developing floating solar projects in reservoir settings.
🏛政策担当者:Offers evidence that consumers support tariff premiums for floating solar, justifying policy instruments like feed-in tariffs or green pricing for integrated water-energy solutions.
📄 Abstract（原文）
Given South Korea’s acute land constraints and ambitious renewable energy targets, floating solar farms (FSFs) on multi-purpose dam reservoirs offer a sustainable land-sparing solution for advancing the water-energy nexus and climate adaptation. This study estimates households’ willingness to pay (WTP) for a tariff premium supporting FSFs on multi-purpose dam reservoirs—a bundled sustainability attribute encompassing land-sparing deployment, water-energy nexus synergies (90% evaporation reduction, hydropower complementarity), and avoided land-use conflicts—relative to equivalent electricity from land-based solar farms (LSFs). The valuation scenario explicitly frames FSFs as an integrated policy package, not an isolated engineering characteristic, with balanced disclosure of location-specific trade-offs. The study highlights the sustainability value of land-sparing water-energy nexus solutions in South Korea. The analysis draws on a nationwide contingent valuation survey of 1000 households conducted from mid-April to mid-May 2025. Employing the one-and-one-half-bound dichotomous choice format with a spike model to handle zero WTP responses, we estimate a mean tariff premium of KRW 26.8 (USc 1.9) per kWh—17% of the residential rate. This exceeds the current FSF-LSF levelized cost differential (KRW 19 per kWh), despite 49% zero bids largely from protest responses. Socioeconomic factors (education, income, female gender, metropolitan residence, policy awareness) significantly shape acceptance probabilities. These findings affirm meaningful support for FSF deployment, contributing to long-term sustainability by integrating renewable energy with water resource management and reducing land-use conflicts. They also inform sustainable energy transition policies by showing that consumers are willing to fund multifunctional infrastructure synergies.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/su18094321first seen 2026-05-17 04:55:07
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