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In 2022, PV accounted for 70 % of total capacity additions of renewable power (348 GW), with China accounting for 44 % of global capacity (Sawin et al.,2022). PV still has significant potential for further development in China, particularly in regions abundant in solar energy resources like northwest China (Lin et al.,2022).
China's installed centralized solar power plant capacity comprises over 60 % of the total installed capacity encompassing both centralized and distributed PV systems (National Energy Administration,2023).
From the perspective of photovoltaic scrap time, suppose the lifetime of photovoltaics to be 25 years (Libra et al.,2023), it can be inferred from Fig. 3 b and Fig. 4 c that China's photovoltaic power stations will face widespread scrapping starting from 2038, which highlights the importance of planning for areas to be decommissioned.
To address the aforementioned gaps, we present an integrated framework combining diverse data sources including RS, GIS, and material intensity databases, to perform high-resolution spatiotemporal mapping of material stock in China's solar power plants from 2010 to 2019 at the solar power plant level.
In contrast, smaller solar power plants (<100MW) are densely scattered in areas closer to urban centers in central and eastern China, with distances ranging from 0 to 50 km, though only several small and remote solar power plants are distributed >50 km from urban areas in the southwest region of China such as Sichuan, Guizhou, and Yunnan.