OpenPVMapper: A Multi-source, Nationwide Database of Rooftop Photovoltaic Systems in France

• URL: http://arxiv.org/abs/2607.25153v1
• Date: Mon, 27 Jul 2026 23:53:03 GMT
• Title: OpenPVMapper: A Multi-source, Nationwide Database of Rooftop Photovoltaic Systems in France
• Abstract summary: OpenPVMapper is a nationwide, multi-source database of rooftop PV installations in mainland France.<n>The database contains 1,135,850 installations, totaling approximately 15.01GWp of installed capacity.<n>It is released under an open (CC-BY) license alongside the full source code used to build it.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Rooftop photovoltaic (PV) systems account for the vast majority of PV grid connections, yet no open, comprehensive, installation-level dataset of these systems exists: public registries aggregate data only above a capacity threshold, and remote sensing-based detection efforts, while extensive, are typically confined to a single method, a limited geographic scope, or a single point in time. We introduce OpenPVMapper, a nationwide, multi-source database of rooftop PV installations in mainland France, built by aggregating and reconciling complementary sources: a deep learning-based detection pipeline deployed on nationwide aerial imagery, OpenStreetMap and a probabilistic building-level detection dataset. The resulting database contains 1,135,850 installations, totaling approximately 15.01~GWp of installed capacity, each documented with its provenance, detection method, and, where available, a manual validation flag. Manual review of a stratified sample of 1,862 installations places the database's overall precision at approximately 74--75\%, with corroboration across independent sources bringing a substantial, quantified precision gain. By aggregating independent sources rather than relying on any single detection method, OpenPVMapper reaches a level of confidence beyond what any one source could provide on its own, while remaining extensible to further sources as they become available. It is released under an open (CC-BY) license alongside the full source code used to build it.

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