Impacts of photovoltaic solar energy on soil carbon: A global systematic review and framework

Noah Z. Krasner, Jessica Fox, Alona Armstrong, Kathleen Ave, Fabio Carvalho, Yudi Li, Leroy J. Walston, Michael P. Ricketts, Sarah M. Jordaan, Majdi Abou Najm, Heidi M. Hartmann, Rebecca Lybrand and Rebecca R. Hernandez

Renewable and Sustainable Energy Reviews, 2025, vol. 208, issue C

Abstract: Globally, solar energy is anticipated to be the primary source of electricity as early as 2050, and the greatest additions in capacity are currently in the form of large, ground-mounted photovoltaic solar energy facilities (GPVs). Growing interest lies in understanding and anticipating opportunities to increase soil carbon sequestration across the footprint and perimeter of both conventional and multi-use GPVs (e.g., ecovoltaics, agrivoltaics, and rangevolatics), especially as operators increasingly deputize as land managers. To date, studies on the relationship between soils and PV solar energy are limited to unique, localized sites. This study employed a systematic review to (i) identify a global corpus of 18 studies on interactions between GPVs and soils, (ii) collect and characterize 113 soil and soil-related experimental variables interacting with GPVs from this corpus, and (iii) synthesize trends among these experimental variables. Next, this study combined data from the systematic review with an iterative, knowledge co-production approach to produce a conceptual model for the study of soil and GPV interactions that applies to multiple installation types, scales, and contexts where GPVs are deployed, and identified research opportunities, threats, and priorities. This study's baseline understanding, conceptual model, and co-produced knowledge confer unique insight into the feasibility of combining soil carbon sequestration with the climate change mitigation potential of PV solar energy.

Keywords: Soil carbon sequestration; Climate change mitigation; Renewable energy; Ground-mounted photovoltaic solar energy; Agrivoltaics; Ecovoltaics; Soil health; Landscape restoration; Systematic literature review; Techno-ecological synergy; Knowledge co-production (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.rser.2024.115032

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