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<p>Current research on the climatic effects of photovoltaic (PV) power plants shows inconsistent results, which may be related to differences in meteorological conditions and vegetation characteristics across study regions. Therefore, this study focuses on a desert Gobi PV power plant located in the arid region of northwestern China, where vegetation cover is absent and precipitation is extremely scarce. A comparative meteorological observational system was established inside and outside the PV power plant to investigate the local climatic effects of a large-scale PV power plant through comparative analysis. The results indicate minimal temperature differences at various heights between the PV plant and the reference site, suggesting a cooling effect and limited local climatic impacts, in contrast to previous studies. Due to the decreased albedo and relatively low emissivity within the PV power plant, net radiation increased by approximately 32.1%. The daily mean sensible heat flux inside the plant is 12.3% higher. Owing to the shading effect of PV panels, the daily mean surface heat flux and latent heat flux inside the plant are reduced by 20.4% and 25.0%, respectively. The results differ greatly from previous studies. This study also examines the effect of PV curtailment on energy partition: on curtailment days, net radiation, sensible heat, and surface heat flux decrease, while backsheet temperature and upward longwave radiation drop by 1.2˚C and 15&#xa0;W/m². This study provides key insights into the local climate effects of PV power plants.</p>

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Analysis of surface energy characteristics of desert photovoltaic power plants under typical clear-sky conditions in extremely Arid regions during summer

  • 期刊论文

  • 发表日期：

    2026年3月9日

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  • Yi Liu,
  • Xiaoqing Gao,
  • Jiang Ying,
  • Zhimin Yang,
  • Degang Zhou,
  • Yuanhao Wang,
  • Xuping Duan,
  • Bolong Chen,
  • Zhenchao Li

摘要

Current research on the climatic effects of photovoltaic (PV) power plants shows inconsistent results, which may be related to differences in meteorological conditions and vegetation characteristics across study regions. Therefore, this study focuses on a desert Gobi PV power plant located in the arid region of northwestern China, where vegetation cover is absent and precipitation is extremely scarce. A comparative meteorological observational system was established inside and outside the PV power plant to investigate the local climatic effects of a large-scale PV power plant through comparative analysis. The results indicate minimal temperature differences at various heights between the PV plant and the reference site, suggesting a cooling effect and limited local climatic impacts, in contrast to previous studies. Due to the decreased albedo and relatively low emissivity within the PV power plant, net radiation increased by approximately 32.1%. The daily mean sensible heat flux inside the plant is 12.3% higher. Owing to the shading effect of PV panels, the daily mean surface heat flux and latent heat flux inside the plant are reduced by 20.4% and 25.0%, respectively. The results differ greatly from previous studies. This study also examines the effect of PV curtailment on energy partition: on curtailment days, net radiation, sensible heat, and surface heat flux decrease, while backsheet temperature and upward longwave radiation drop by 1.2˚C and 15 W/m². This study provides key insights into the local climate effects of PV power plants.