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低排出型フランス戸建住宅における屋根置き太陽光発電とヒートポンプシステムのシナリオベース動的評価

Scenario-Based Dynamic Assessment of Rooftop Solar Photovoltaic and Heat Pump Systems for Low-Emission French Single-Family Houses (原題)

Abdo Abdullah Ahmed Gassar, Abdulrahman H. Ba-Alawi, Raed Jafar

Applied Sciences📚 査読済 / ジャーナル2026-10-07#エネルギー転換Origin: EU経営インパクト: コスト削減対象セクター: real_estate
DOI: 10.3390/app16199915
原典: https://doi.org/10.3390/app16199915

🤖 gxceed AI 要約

日本語

フランスの代表的な戸建住宅2類型（平屋・2階建て）を4気候区で対象に、屋根置きPV＋蓄電池とヒートポンプ改修の3シナリオを動的シミュレーションで評価した研究。PV＋蓄電池は自給率36〜51%を達成し運用炭素を削減するが、冬季暖房需要との季節ミスマッチで系統依存は高いまま残る。ヒートポンプ追加は暖房電力需要を減らすものの、冷房や補機負荷により年間電力消費が必ずしも減らないことを示す。

English

A scenario-based dynamic simulation assesses rooftop PV-plus-battery and heat-pump retrofits for two representative French detached-house typologies across four climate zones. PV-battery systems cut operational carbon and reach 36-51% self-sufficiency, yet grid dependency stays high due to seasonal mismatch with winter heating. Adding heat pumps lowers heating demand but not always annual electricity use, as cooling and auxiliary loads offset savings.

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

日本の住宅脱炭素（ZEH・省エネ改修・電力系統）政策や、気候区別の改修支援設計を考える上で参考になる実証例。ただしフランスの住宅・気候前提であり、日本の制度文脈への直接接続は限定的。

In the global GX context

Adds building-level empirical evidence to the EU climate-neutrality and EPBD retrofit agenda, showing that typology- and climate-sensitive support design matters for residential decarbonization pathways relevant to CSRD-era building disclosure.

👥 読者別の含意

🔬研究者:住宅ストックのPV・HP改修効果を気候区・建物類型別に定量化する動的シミュレーション手法の参考になる。

🏢実務担当者:自社の再エネ・省エネ投資判断において、季節ミスマッチや補機負荷を含めた実効削減量の評価が重要と示唆。

🏛政策担当者:改修補助金や建築規制を気候区・建物類型に応じて差別化設計する根拠として活用できる。

📄 Abstract（原文）

Achieving the European Union’s (EU) climate neutrality targets requires residential buildings to reduce operational carbon emissions, while increasing on-site renewable generation. However, the relative contributions of rooftop photovoltaic (PV) systems with battery storage and heat pump (HP) retrofits have not been comprehensively evaluated for representative French single-family house typologies. This study assesses two representative French detached-house typologies, Mozart (single-storey) and Puccini (two-storey), across four climatic zones (Paris, Lyon, Brest, and Nice) using a scenario-based dynamic simulation framework. Three retrofit scenarios were developed from prototype models of each building typology: (i) a baseline configuration with existing electric radiators, (ii) rooftop distributed PV systems combined with battery storage, and (iii) PV–battery systems combined with the replacement of the existing heating systems by water-to-air HPs. Performance was evaluated using energy, carbon, economic, and grid-dependency indicators, including the self-consumption ratio (SCR), self-sufficiency ratio (SSR), grid import dependency ratio (GIDR), operational carbon emissions (OC), levelized cost of energy (LCOE), and carbon emission reduction (CER). The results show that Scenario 2 (PV–battery systems) reduces OC relative to the baseline and achieves SSR values of approximately 36.21–50.62%, while grid-import dependency remains high because of the seasonal mismatch between PV generation and winter heating demand. Replacing the existing electric radiators with water-to-air HPs reduces heating electricity demand but does not uniformly reduce total annual electricity consumption. For Puccini, energy consumption in Scenario 3 is higher than in Scenario 2 in Paris, Lyon, and Nice because cooling and additional heat pump system loads—including fans, pumps, heat rejection, and supplemental electric heating—offset the heating savings. However, houses in the Mediterranean climate zone perform best overall, whereas those in oceanic climates require more careful system design. These findings emphasize the importance of retrofit strategies and financial support that are sensitive to both typology and climate, to support effective progress towards EU climate neutrality.

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