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Potential of Abandoned Agricultural Lands for New Photovoltaic Installations

Author

Listed:
  • Giulia Ronchetti

    (Department of Sustainable Development and Energy Sources, Ricerca sul Sistema Energetico–RSE S.p.A., Via Rubattino 54, 20134 Milan, Italy)

  • Martina Aiello

    (Department of Sustainable Development and Energy Sources, Ricerca sul Sistema Energetico–RSE S.p.A., Via Rubattino 54, 20134 Milan, Italy)

Abstract

Decarbonization strategies aim at increasing renewable energy source (RES) capacity, including new photovoltaic (PV) systems. Utility-scale PV installations are often placed in agricultural areas, resulting in a reduction in agricultural land and affecting the environment. To balance agricultural and energy policies, PV development should not limit agricultural purposes, allowing sustainable exploitation under specific technological and environmental conditions, particularly in areas of actual or potential abandonment. Studying agricultural abandonment is complex due to its multifaceted nature, the lack of a clear definition, and challenges in acquiring cartographic data. This study introduces and compares two methodologies to identify abandoned agricultural areas, aiming to delineate macro-areas of potential abandonment and examine patterns for conversion to energy use, with a focus on Toscana, a region (NUTS-2) in central Italy, which has experienced cropland reduction unrelated to urbanization. The first, simplified approach analyses land cover changes from 2000 to 2018, while the second method provides a more detailed abandonment detection by means of medium spatial resolution satellite imagery from the Harmonized Landsat and Sentinel-2 dataset. A Random Forest classifier combined with Object-Based Image Analysis (OBIA) is applied to satellite data to map annual active/non-active croplands. Annual maps are then validated with a trajectory-based approach to detect agricultural land abandonment. This second methodology can help in providing spatially and timely meaning estimates of abandoned agricultural areas to be recovered for energy purposes and promote a sustainable growth of PV systems.

Suggested Citation

  • Giulia Ronchetti & Martina Aiello, 2025. "Potential of Abandoned Agricultural Lands for New Photovoltaic Installations," Sustainability, MDPI, vol. 17(2), pages 1-19, January.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:2:p:694-:d:1569020
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    References listed on IDEAS

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    1. Grazia Fattoruso & Domenico Toscano & Andrea Venturo & Alessandra Scognamiglio & Massimiliano Fabricino & Girolamo Di Francia, 2024. "A Spatial Multicriteria Analysis for a Regional Assessment of Eligible Areas for Sustainable Agrivoltaic Systems in Italy," Sustainability, MDPI, vol. 16(2), pages 1-29, January.
    2. Mara Balestrieri & Amedeo Ganciu, 2018. "Landscape Changes in Rural Areas: A Focus on Sardinian Territory," Sustainability, MDPI, vol. 10(1), pages 1-16, January.
    3. Elkadeem, Mohamed R. & Zainali, Sebastian & Lu, Silvia Ma & Younes, Ali & Abido, Mohamed A. & Amaducci, Stefano & Croci, Michele & Zhang, Jie & Landelius, Tomas & Stridh, Bengt & Campana, Pietro Elia, 2024. "Agrivoltaic systems potentials in Sweden: A geospatial-assisted multi-criteria analysis," Applied Energy, Elsevier, vol. 356(C).
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