Rooftop photovoltaics and energy equity: quantifying socio-energy trade-offs in urban energy transitions
屋上太陽光発電とエネルギー公平性：都市エネルギー移行における社会エネルギートレードオフの定量化 (AI 翻訳)
Yong Sun, Haoran Zhang, Yuya Takane, Kazuki Yamaguchi, Tomohiko Ihara
🤖 gxceed AI 要約
日本語
本研究は、屋上太陽光発電（PV）システムが都市の脱炭素化に貢献する一方で、熱的・経済的影響を通じて社会的不平等を悪化させる可能性があることを示す。6つの世界都市を対象に、PV誘発昇温、熱関連健康リスク、経済的利益を統合した社会エネルギートレードオフ指標（SETI）を開発し、PV誘発昇温が広範囲かつ不平等であることを明らかにした。結果は、脆弱なコミュニティが同じクリーンエネルギー利益に対してより高い社会的コストを負担することを示し、エネルギー移行における効率と公平性の統合の必要性を強調する。
English
This study demonstrates that rooftop photovoltaic (PV) deployment generates inequitable socio-energy trade-offs within cities, where disadvantaged communities bear higher societal costs for the same clean-energy gains. Using an integrated model applied to six global cities, the authors developed a Socio-Energy Trade-off Index (SETI) linking PV-induced warming, heat-related health risks, and economic benefits. Results show that PV-induced warming is widespread and unequal, with midday temperature increases from 0.27 °C in Cairo to 0.58 °C in Guangzhou and a Gini index up to 0.322. The findings emphasize that equitable solar deployment requires integrating efficiency and justice in urban energy transitions.
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
日本の都市部でも屋上太陽光発電の導入が進む中、本研究成果は、PV導入に伴う熱的影響や社会的格差への注意を促す。都市のエネルギー移行において、効率性だけでなく公平性を考慮した政策立案が重要であることを示唆する。
In the global GX context
This study provides a novel framework for quantifying the trade-offs between PV deployment and social equity, relevant for cities worldwide implementing rooftop solar programs. It highlights the need for policymakers to consider localized thermal effects and ensure that clean energy transitions do not exacerbate existing inequalities.
👥 読者別の含意
🔬研究者:Provides a quantitative method (SETI) for assessing socio-energy trade-offs in PV deployment, useful for urban energy transition research.
🏢実務担当者:Urban planners and solar installers should consider the thermal impacts and equity implications when designing rooftop PV programs.
🏛政策担当者:Highlights the need for equitable solar deployment policies that account for differential impacts on disadvantaged communities.
📄 Abstract（原文）
Rooftop photovoltaic systems, while central to urban decarbonization, can unintentionally exacerbate social inequalities through uneven thermal and economic outcomes. This study demonstrates that rooftop PV deployment generates inequitable socio-energy trade-offs within cities, where disadvantaged communities bear higher societal costs for the same clean-energy gains. To quantify these disparities, we developed a Socio-Energy Trade-off Index (SETI) that links PV-induced warming, heat-related health risks, and economic benefits within an integrated WRF-forced Canopy Model – Building Energy Model framework applied to six global cities. Results reveal that PV-induced warming is both widespread and unequal, with midday temperature increases from 0.27 °C in Cairo to 0.58 °C in Guangzhou and a Gini index up to 0.322. Less developed communities consistently record higher SETI values due to compact urban form and limited financing access. Furthermore, technological improvements—such as enhanced panel efficiency and emissivity—reduce total trade-offs but disproportionately benefit formal, self-financed neighborhoods, widening relative inequity. These findings reframe the Photovoltaic Heat Island (PVHI) effect as an energy-system externality, emphasizing that equitable solar deployment requires integrating efficiency and justice in urban energy transitions.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.apenergy.2026.128440first seen 2026-07-18 05:14:30
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