屋根設置型単結晶シリコン太陽光発電システムのライフサイクル環境影響評価
Life Cycle Environmental Impact Assessment of Roofing-Based Monocrystalline Silicon Photovoltaic Systems (原題)
Haowei Hu, Zihao Wang, Yong Yan, Feilong Zhao, Qin Li, Qinzhang Wang, Hao Wang
🤖 gxceed AI 要約
日本語
中国安徽省池州市の公共建築屋根に設置された1kWpの単結晶シリコン太陽光発電システムを対象に、ゆりかごから墓場までのライフサイクル評価を実施。生産から輸送、30年間の運用保守、廃棄時リサイクルまでを対象とし、ReCiPe 2016やIPCC AR6などを用いて環境影響と炭素排出を定量化した。正味の炭素排出強度は12.09 g CO2-Eq/kWh、エネルギー回収期間は1.58年と試算され、リサイクルによる回避負荷が全体の性能を大幅に向上させることが示された。
English
This study conducts a cradle-to-grave LCA of a 1 kWp rooftop monocrystalline silicon PV system in Chizhou, China, covering production, transport, 30-year operation, and recycling. Net carbon intensity is 12.09 g CO2-Eq/kWh with an energy payback period of 1.58 years, highlighting recycling benefits and the need to decarbonize upstream electricity and reduce material burdens.
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、太陽光発電の導入拡大に伴い、ライフサイクル全体での環境負荷評価が重要視されている。本研究成果は、国内の屋根設置型PVの環境性能評価や、再生可能エネルギー導入の政策立案に参考となる。
In the global GX context
Globally, this study provides empirical evidence on the life-cycle environmental performance of rooftop PV, supporting renewable energy transition and carbon accounting. It underscores the importance of recycling and upstream decarbonization, relevant to international sustainability reporting and climate targets.
👥 読者別の含意
🔬研究者:Provides detailed LCA data and methodology for PV systems, useful for comparative studies and meta-analyses.
🏢実務担当者:Offers insights into the environmental benefits of PV installation and recycling, aiding corporate sustainability reporting and renewable energy procurement decisions.
🏛政策担当者:Informs policies on renewable energy incentives and end-of-life management for solar panels.
📄 Abstract（原文）
This study conducted a cradle-to-grave life-cycle assessment of a 1 kWp grid-connected building-applied monocrystalline silicon photovoltaic system installed on a public-building flat roof in Chizhou, Anhui Province, China. The assessment covered production, transport, 30-year operation and maintenance, and end-of-life recycling. ReCiPe 2016 Midpoint (H), IPCC AR6 100-year global warming potential characterization, cumulative energy demand accounting, and Monte Carlo simulation were applied to quantify environmental impacts, energy demand, carbon emissions, and parameter uncertainty. The system is expected to deliver 34,822 kWh/kWp of electricity over its service life. Gross life-cycle carbon emissions and cumulative energy demand, excluding recycling credits, were 1194.08 kg CO2-Eq/kWp and 4290.30 kWh/kWp, respectively. End-of-life material recovery provided avoided burdens of 773.11 kg CO2-Eq/kWp and 2309.84 kWh/kWp, reducing the net results to 420.96 kg CO2-Eq/kWp and 1980.46 kWh/kWp. Accordingly, the gross and net life-cycle carbon emission intensities were 34.29 and 12.09 g CO2-Eq/kWh, respectively. The gross and net Energy Payback Periods were 3.42 and 1.58 years, while the corresponding carbon payback times were 1.67 and 0.59 years. Production was the principal source of environmental burdens, whereas recycling substantially improved the overall performance. Monte Carlo simulation indicated coefficients of variation of 3.59–5.28% for the assessed production-stage indicators. These findings highlight the importance of decarbonizing upstream electricity, reducing material burdens from aluminium, copper, and electronic components, and improving end-of-life recovery pathways.
🔗 Provenance — このレコードを発見したソース
- primary_source https://doi.org/10.3390/en19174155first seen 2026-09-07 00:12:36
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