炭素削減制約下における高比率建築用太陽光発電システムの利益メカニズムと向上戦略
Benefit Mechanism and Enhancement Strategy of High‐Proportion Building Photovoltaic Systems Under Carbon Reduction Constraints (原題)
Boyuan Wang, Zhifeng Sun, Yongzhi Zhou, Yi Zhang, Xinyu Zhang, Xiaochao Guo, Huishan Xiao, Wenbo Cai
🤖 gxceed AI 要約
日本語
建築部門のカーボンニュートラルに向け、高比率PV導入時の源負荷不整合と輸出価値低下によるシステム全体とPV利用の利益乖離を解明。北京市の改修オフィスビルを対象に、熱性能向上・電化・PV容量拡大の3経路を比較し、システム総合利益率はPV拡大が最大、PV利用利益率は電化が最大と示した。ゼロカーボン実証プロジェクトで有効性を確認。
English
This study addresses the benefit divergence between overall system and PV utilization under high-proportion building PV, proposing a framework with carbon constraints and grid absorption costs. Using a Beijing retrofit office, it compares thermal enhancement, electrification, and PV expansion, finding PV expansion yields highest system benefit (13.3%) while electrification yields highest PV utilization benefit (16.8%). A zero-carbon demonstration validates the dual-driven mechanism.
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ZEB・省エネ基準や再エネ導入拡大政策に示唆。SSBJ開示やカーボンプライシング下での建物PV投資判断に有用。
In the global GX context
Contributes to global building decarbonization literature by quantifying PV benefit mechanisms under carbon constraints, relevant for ISSB-aligned disclosure and transition finance in real estate.
👥 読者別の含意
🔬研究者:Provides a novel benefit evaluation framework for high-proportion building PV, highlighting the trade-off between system and PV utilization benefits.
🏢実務担当者:Offers guidance for optimizing building PV investments and demand-side measures under carbon reduction targets.
🏛政策担当者:Informs policy design for building PV incentives and grid integration, considering multi-stakeholder benefits.
📄 Abstract（原文）
ABSTRACT Photovoltaics (PV) are a key pathway towards carbon neutrality in the building sector. However, under high‐proportion PV applications, intensified source–load mismatch and declining export value cause divergence between overall system benefits and PV utilisation benefits, whereas the related mechanisms remain unclear. This study establishes a benefit evaluation framework considering carbon reduction constraints, equivalent grid absorption costs and multi‐stakeholder benefit differences, revealing the contradiction between ‘overall benefit optimisation’ and ‘PV utilisation optimisation’. Based on a retrofit office building in Beijing, three technology‐oriented pathways, including thermal performance enhancement (I), heating and cooling electrification (II) and sole PV capacity expansion (III), were comparatively analyzed under a unified zero‐carbon constraint. Results show that the system comprehensive benefit rate follows III > I > II (13.3%/12.2%/10.4%), indicating that PV provides more direct economic returns than demand‐side energy‐saving measures under the current pricing mechanism. In contrast, the PV utilisation benefit rate follows II > I > III (16.8%/13.7%/13.3%), demonstrating that stronger source–load coordination improves the economic value of PV electricity. Further analysis indicates that benefit enhancement depends on the dual‐driven mechanism of ‘effective generation–effective utilisation’. Finally, a zero‐carbon building demonstration project was implemented, providing support for the benefit evaluation and optimisation of high‐proportion building PV systems.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1049/ses2.70040first seen 2026-08-20 04:49:44
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