Coal plants persist as a large barrier to the global solar energy transition
石炭火力発電所は世界的な太陽エネルギー転換の大きな障壁として存続する (AI 翻訳)
Rui Song, Yin Feng, Jan-Peter Muller, Adam C. Povey, Basudev Swain, Chenchen Huang, R. G. Grainger
🤖 gxceed AI 要約
日本語
本論文は、石炭火力発電所からのエアロゾルが太陽光発電効率を低下させることを世界規模で定量化した。2023年にはエアロゾルにより世界の太陽光発電量が5.8%（111TWh）減少し、その損失は新設された太陽光発電の年間増加量の約3分の1に相当する。特に中国では損失が大きく、発電量の7.7%に達した。日本の石炭火力政策にも示唆を与える。
English
This study quantifies how aerosol pollution from coal plants reduces solar PV output globally. In 2023, aerosols reduced global PV generation by 5.8% (111 TWh), equivalent to one-third of new PV capacity additions. China suffered the largest losses, with a 7.7% reduction. Results highlight a systematic overestimation of solar's climate contribution if coal persists.
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
日本では石炭火力の段階的廃止が遅れており、太陽光発電の実効性に直接影響する可能性がある。本結果は、日本のエネルギー基本計画やGX政策における石炭と太陽光の共存リスクを定量的に示すもので、SSBJ・有報での気候関連リスク開示の重要性を裏付ける。
In the global GX context
This paper provides direct evidence that coal plants undermine solar PV performance via aerosols, a factor often missing from energy transition models. It reinforces the need to account for cross-sectoral impacts in climate disclosure frameworks like TCFD/ISSB, and challenges assumptions in transition finance that overlook real-world performance constraints.
👥 読者別の含意
🔬研究者:Quantifies a previously underexplored interaction between coal and solar, offering crucial data for energy system models and climate scenario analysis.
🏢実務担当者:Highlights a material operational risk for solar asset owners located near coal plants, with implications for project finance and energy yield assessments.
🏛政策担当者:Demonstrates that continued coal operation erodes the climate benefits of solar expansion, emphasizing the need for integrated phase-out and renewables policies.
📄 Abstract（原文）
Abstract The global energy transition depends on solar photovoltaic (PV) power displacing fossil fuels to deliver projected climate and air quality benefits. However, aerosol pollution from co-located coal plants actively suppresses PV energy production. Here a global, facility-level dataset shows that aerosols reduced global PV generation by 5.8% in 2023 (111 TWh). From 2017 to 2023, annual aerosol-induced PV energy losses from existing systems were, on average, equivalent to one-third of the energy added by new PV installations. In China, aerosols caused the largest PV energy losses worldwide, reducing national PV generation by 7.7% in 2023. The corresponding annual loss-to-growth ratio averaged 38% and frequently exceeded 50%. Despite continued coal expansion, PV energy losses have declined by 1.4% yr −1 since 2017 owing to stricter emission controls. By contrast, the USA, where co-location of solar and coal plants is limited, experienced only 3.1% aerosol-induced PV loss. Given the slow pace of global coal phase-out, these results reveal a constraint on solar performance that, if unaccounted for, could lead to a systematic overestimation of the transition’s contribution to climate and air quality goals.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1038/s41893-026-01836-5first seen 2026-06-04 04:38:16
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