Exploring the potential of non-residential solar to tackle energy injustice

Moritz Wussow (), Chad Zanocco, Zhecheng Wang, Rajanie Prabha, June Flora, Dirk Neumann, Arun Majumdar () and Ram Rajagopal ()
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Moritz Wussow: Stanford University
Chad Zanocco: Stanford University
Zhecheng Wang: Stanford University
Rajanie Prabha: Stanford University
June Flora: Stanford University
Dirk Neumann: Albert-Ludwigs-Universität Freiburg
Arun Majumdar: Stanford University
Ram Rajagopal: Stanford University

Nature Energy, 2024, vol. 9, issue 6, 654-663

Abstract: Abstract Despite the observed disparities in US residential solar deployment, there is limited insight into whether these disparities exist for the non-residential sector. Here we use DeepSolar, a comprehensive photovoltaic database constructed with satellite imagery, to assess solar deployment equity based on the US Justice40’s disadvantaged community measure. We find that disadvantaged communities have less non-residential solar (−38%), but this disparity is notably higher for residential solar (−67%). Across-state variations are consistent for residential solar (−81% to −49%) yet highly heterogeneous for non-residential solar (−66% to +34%). Using scenarios to explore the potential for microgrids powered by solar on building rooftops larger than 1,000 square metres, we estimate that 63% of disadvantaged communities could meet at least 20% of annual residential electricity demand. Our research argues for a new focus on non-residential solar as a way to strengthen resilience and accelerate local deployment of clean energy resources to promote energy justice.

Date: 2024
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DOI: 10.1038/s41560-024-01485-y

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