Unlocking the energy decarbonization potentials of rooftop photovoltaic-thermal collectors: A case study of Tarragona province's residential communities

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy Pub Date : 2025-07-20 DOI:10.1016/j.renene.2025.124039

Adedamola B. Shobo, Raul Saez, Dieter Boer, Manel Vallès

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Abstract

The residential sector is a major contributor to global energy demand and carbon emissions, underscoring the need for scalable decarbonization strategies. This study assesses the technical, economic, and environmental potential of deploying simplified rooftop hybrid photovoltaic-thermal (PV-T) collectors across residential communities in Tarragona Province, Spain. Using high-resolution hourly simulation and an energy community framework, the analysis covered 184 municipalities with annual solar irradiation ranging from 1599.4 to 1804.1 kWh/m²/yr.

Flat-box, water-based PV-T collectors connected directly to municipal water supplies were modeled without auxiliary storage or pumping systems. Results show that with just 3.85 % rooftop surface occupancy (0.125 m²/capita), the proposed configuration can meet 11.8 % of the domestic hot water (DHW) energy and 1.8 % of the electricity demand collectively in the province, delivering 808.4 - 896.9 kWh_th/m² and 233.0 - 259.6 kWh_e/m² annually across the municipalities. The proposed integration of PV-T collectors economically attractive, achieving a payback of 5 - 6 years, net present values (NPV) of €1485.82 - €1755.86/m², and a levelized cost of exergy (LCOEx) between 8.43 - 9.95 c€/kWh across the municipalities. Environmentally, the installations could mitigate approximately 29.3 ktCO₂-eq annually, at a specific avoidance cost of €13.80/tCO₂-eq.

These findings demonstrate that simplified integration of rooftop PV-T collectors offer a cost-effective and replicable pathway for decarbonizing energy use in the residential sector.

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释放屋顶光伏集热器的能源脱碳潜力：塔拉戈纳省住宅社区的案例研究

住宅部门是全球能源需求和碳排放的主要贡献者，强调了可扩展的脱碳战略的必要性。本研究评估了在西班牙塔拉戈纳省的住宅社区部署简化的屋顶混合光伏-热（PV-T）集热器的技术、经济和环境潜力。利用高分辨率逐小时模拟和能源社区框架，该分析涵盖了184个城市，年太阳辐照量为1599.4至1804.1千瓦时/平方米/年。平板箱，水基PV-T收集器直接连接到市政供水，没有辅助存储或抽水系统建模。结果表明，仅以3.85%的屋顶表面占用率（0.125平方米/人），建议的配置可以满足全省11.8%的生活热水（DHW）能源和1.8%的电力需求，每年为各市提供808.4 - 896.9千瓦时/平方米和233.0 - 259.6千瓦时/平方米。拟议中的PV-T集热器整合在经济上具有吸引力，可实现5 - 6年的投资回报，净现值（NPV）为1485.82欧元- 1755.86欧元/平方米，各个城市的平均能源成本（LCOEx）在8.43 - 9.95欧元/千瓦时之间。在环境方面，这些装置每年可以减少大约29.3千吨二氧化碳当量，具体避免成本为13.80欧元/吨二氧化碳当量。这些研究结果表明，屋顶光伏集热器的简化集成为住宅部门的脱碳能源使用提供了一种具有成本效益和可复制的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Renewable Energy 工程技术-能源与燃料

CiteScore

18.40

自引率

9.20%

发文量

1955

审稿时长

6.6 months

期刊介绍： Renewable Energy journal is dedicated to advancing knowledge and disseminating insights on various topics and technologies within renewable energy systems and components. Our mission is to support researchers, engineers, economists, manufacturers, NGOs, associations, and societies in staying updated on new developments in their respective fields and applying alternative energy solutions to current practices. As an international, multidisciplinary journal in renewable energy engineering and research, we strive to be a premier peer-reviewed platform and a trusted source of original research and reviews in the field of renewable energy. Join us in our endeavor to drive innovation and progress in sustainable energy solutions.