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<p>Individual building-level approaches are needed to understand the full potential of rooftop photovoltaics (PV) at national and regional scale. Here we use the European Digital Building Stock Model R2025, an open-access building-level database, to assess rooftop solar potential for each of the 271 million buildings in the European Union. The results show that potential capacity could reach 2.3 TWp (1,822 GWp residential, 519 GWp non-residential), with an annual output of 2,750 TWh based on current PV technology. This corresponds to approximately 40% of electricity demand in a 100% renewable scenario for 2050. Already by 2030, over a half of buildings with floor area larger than 2,000 m<sup>2</sup> could generate most of remaining capacity for the 2030 target with 355 GWp. Across member states, non-residential rooftops could cover 50% or more of their PV targets, with several exceeding 95%. The open-access building-level database offers practical tools to support better decisions, accelerate renewable energy adoption and promote a more decentralized energy system. It is also an enabler for planners and researchers to further explore energy scenarios with high renewable shares.</p>

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Mapping Europe’s rooftop photovoltaic potential with a building-level database

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月12日

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  • Georgia Kakoulaki,
  • Robert Kenny,
  • Nigel Taylor,
  • Ana Maria Gracia-Amillo,
  • Sandor Szabo,
  • Ana M. Martínez,
  • Christian Thiel,
  • Arnulf Jäger-Waldau

摘要

Individual building-level approaches are needed to understand the full potential of rooftop photovoltaics (PV) at national and regional scale. Here we use the European Digital Building Stock Model R2025, an open-access building-level database, to assess rooftop solar potential for each of the 271 million buildings in the European Union. The results show that potential capacity could reach 2.3 TWp (1,822 GWp residential, 519 GWp non-residential), with an annual output of 2,750 TWh based on current PV technology. This corresponds to approximately 40% of electricity demand in a 100% renewable scenario for 2050. Already by 2030, over a half of buildings with floor area larger than 2,000 m2 could generate most of remaining capacity for the 2030 target with 355 GWp. Across member states, non-residential rooftops could cover 50% or more of their PV targets, with several exceeding 95%. The open-access building-level database offers practical tools to support better decisions, accelerate renewable energy adoption and promote a more decentralized energy system. It is also an enabler for planners and researchers to further explore energy scenarios with high renewable shares.