Photovoltaic (PV) power generation has become an important clean energy generation source. In the context of transportation development and its very large energy demand, scholars have begun to use PV power generation technology on roads and their surrounding road spaces. Current research on PV power generation in road spaces has mostly focused on its feasibility and technical potential, but there have been few studies on its economic potential. For this reason, this paper used the Zhengding County of Hebei Province, China, to study the evaluation method of the technical and economic potential of PV power generation in road spaces and to analyze the development potential of PV power generation in road spaces. The results show that Zhengding County has a very high amount of road space available for PV power generation, with an effective PV installation area of 20.98 km² and an annual theoretical power generation capacity of 1.5 billion kWh. If the PV road space project is fully operational in 2021, it could be profitable by 2026, and the net profit (NP) could reach $705 million in 2030. The application of photovoltaic power generation in road spaces is a very promising method of sustainable energy supply.

中文翻译：

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道路空间光伏发电经济潜力评估

光伏（PV）发电已成为重要的清洁能源发电来源。在交通发展及其巨大的能源需求背景下，学者们开始将光伏发电技术应用于道路及其周边道路空间。目前对道路空间光伏发电的研究主要集中在其可行性和技术潜力上，但对其经济潜力的研究很少。为此，本文以河北省正定县为研究对象，研究道路空间光伏发电技术经济潜力评价方法，分析道路空间光伏发电发展潜力。结果表明，正定县可用于光伏发电的道路空间非常大，²、年理论发电能力15亿千瓦时。如果光伏道路空间项目在2021年全面投产，到2026年可实现盈利，2030年净利润（NP）可达7.05亿美元。光伏发电在道路空间的应用是一种非常有前景的可持续能源方式供应。