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<p>Harnessing rooftop photovoltaic (RPV) generation to power electric vehicles (EVs) can substantially accelerate the renewable energy transition and carbon mitigation. Yet, the mismatch between electricity generation and charging demand, exacerbated by rapid EV adoption, introduces large uncertainties in charging capacity, economic feasibility and decarbonization potential. Here we assess the spatiotemporal scalability of PV-powered EV charging across 40 global cities, analysing 3.38 billion charging records from 22,000 charging piles. Under three charging strategies, influential factors affecting daily charging capacity (generation-to-demand ratio) across all urban microgrids of varying sizes consistently followed an exponential scaling law. By 2050, RPV generation is projected to double in each city (1.6–434.7 TWh yr<sup>−1</sup>), supported by rooftop area expansions aligned with the shared socioeconomic pathways and charging demand will rise 4–1,759-fold (1.5–10,451.7 GWh yr<sup>−1</sup>), driven by increased EV adoption under International Energy Agency scenarios. Under these evolving conditions, the annual charging capacity of each city declines but remains sufficient to meet 2050 charging demands. Across all cities, total revenue is projected at US$3,173.2 (±99.5) billion with accumulative carbon mitigation of 11.9(±0.4) Gt from 2025 to 2050. These results suggest that RPV-powered EV charging can remain economically viable and sufficient to meet growing demand across diverse urban settings through 2050.</p>

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Rooftop photovoltaic-powered electric vehicle charging for accelerated decarbonization

  • 期刊论文

  • 发表日期：

    2026年6月15日

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  • Linlin You,
  • Rui Zhu,
  • Paolo Santi,
  • Carlo Ratti,
  • A. T. D. Perera,
  • Zihan Guo,
  • Ziyi Huang,
  • Shixiang Xing,
  • Min Chen,
  • Guonian Lü,
  • Zheng Qin,
  • Jinyue Yan

摘要

Harnessing rooftop photovoltaic (RPV) generation to power electric vehicles (EVs) can substantially accelerate the renewable energy transition and carbon mitigation. Yet, the mismatch between electricity generation and charging demand, exacerbated by rapid EV adoption, introduces large uncertainties in charging capacity, economic feasibility and decarbonization potential. Here we assess the spatiotemporal scalability of PV-powered EV charging across 40 global cities, analysing 3.38 billion charging records from 22,000 charging piles. Under three charging strategies, influential factors affecting daily charging capacity (generation-to-demand ratio) across all urban microgrids of varying sizes consistently followed an exponential scaling law. By 2050, RPV generation is projected to double in each city (1.6–434.7 TWh yr−1), supported by rooftop area expansions aligned with the shared socioeconomic pathways and charging demand will rise 4–1,759-fold (1.5–10,451.7 GWh yr−1), driven by increased EV adoption under International Energy Agency scenarios. Under these evolving conditions, the annual charging capacity of each city declines but remains sufficient to meet 2050 charging demands. Across all cities, total revenue is projected at US$3,173.2 (±99.5) billion with accumulative carbon mitigation of 11.9(±0.4) Gt from 2025 to 2050. These results suggest that RPV-powered EV charging can remain economically viable and sufficient to meet growing demand across diverse urban settings through 2050.