戦略的な石炭火力廃止が中国の水ストレス地域への炭素・水の共便益を再配分する
Strategic coal-power phaseout reallocates carbon-water co-benefits towards water-stressed regions in China (原題)
Lin Lv, Chi Zhang, Haofan Zhang, Jun Bi, Miaomiao Liu
🤖 gxceed AI 要約
日本語
中国の石炭火力廃止経路を13通り比較し、水不足を考慮した廃止計画が、炭素削減を維持しつつ水便益を水ストレス地域に再配分することを示した。水情報を考慮した経路では、2050年までに累積SWSPが18-20%増加し、CO2削減量の89-95%を保持する。2030年までに高水リスク都市へのSWSP配分が72-97%に達し、早期に便益を実現する。
English
This study compares 13 coal-power phaseout pathways in China and shows that incorporating water scarcity into retirement planning enhances water-saving benefits while maintaining carbon reductions. Water-informed pathways increase cumulative scarcity-weighted water-saving potential (SWSP) by 18-20% by 2050, while retaining 89-95% of CO2 reductions. By 2030, 72-97% of SWSP is allocated to high-water-risk cities, enabling earlier benefits.
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
日本の石炭火力政策やエネルギー転換計画において、CO2削減だけでなく水資源などの地域便益を考慮した戦略設計の重要性を示唆。日本の電力会社や政策立案者にとって、廃止順序の最適化が地域社会への便益を高める可能性を示す。
In the global GX context
This research provides a framework for integrating water scarcity into energy transition planning, relevant to global climate policy and infrastructure decisions. It highlights the co-benefits of decarbonization beyond carbon, informing integrated resource planning and climate-water nexus discussions.
👥 読者別の含意
🔬研究者:Provides a quantitative framework for assessing co-benefits in energy transition pathways, useful for climate-water nexus research.
🏢実務担当者:Offers insights for utilities and planners on prioritizing coal plant retirements to maximize regional water benefits.
🏛政策担当者:Demonstrates how incorporating water scarcity into phaseout strategies can align climate and water security goals.
📄 Abstract（原文）
Coal-power phaseout is critical for climate mitigation and increasingly relevant to water-security planning. Yet, unlike geographically uniform climate benefits, the value of water savings depends heavily on local scarcity. Whether shifting water scarcity considerations from ex-post evaluation to ex-ante pathway design can reshape the carbon-water nexus remains unclear. Here we develop a unit-level assessment framework to examine the spatiotemporal distribution of carbon and water benefits in China’s coal-power transition from 2025 to 2050 across thirteen retirement pathways, including business-as-usual (BAU) and strategies that prioritize technical, carbon, water, or integrated technical-carbon-water criteria. We find that incorporating water scarcity into coal-retirement planning enhances the scarcity value of water savings while maintaining substantial carbon-mitigation gains. Compared with BAU and technical- or carbon-prioritized pathways, the water-informed pathways increase cumulative scarcity-weighted water-saving potential (SWSP) by 18%–20% by 2050, while retaining 89%–95% of cumulative CO 2 reductions. Among them, the water-scarcity-informed pathways further redirect water-security benefits towards water-stressed regions: by 2030, 72%–97% of cumulative SWSP is allocated to high-water-risk cities, far above the 37%–60% under BAU and technical- or carbon-prioritized pathways, enabling these cities to reach half of their cumulative SWSP 1–2 years earlier. These findings indicate that incorporating water scarcity as a prioritization criterion can align climate mitigation with water-security objectives by reshaping infrastructure transition pathways.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.sftr.2026.102090first seen 2026-08-28 04:50:10
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