农业光伏:巴西甘蔗生物能源行业协同系统的经济可行性

Mario Antonio Stefani, João Felema
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摘要

本研究采用 2019/2020 年收获季节的典型模式值和性能参数,对巴西圣保罗州中部地区一家假想工厂的甘蔗生物能源行业应用农业光伏技术(AV)的经济可行性进行了分析。目的是验证经济可行性,同时考虑到项目的技术方面以及农艺、操作和系统要求。结果表明,综合经济效益大幅提高,达到 33.5%,土地利用效率(LER)达到 108.6%,投资回收期约为 9 年。该方法在能源价格高于 49.21 兆瓦时-1 美元时证明是可行的。由于优化了土地利用,并与现有的使用残余甘蔗生物质的热电厂分担成本,从而实现了集中管理和发电量的大幅增加,因此获得了更大的运营收益。相对增量成本较高的原因是根据甘蔗作物所需的特定农艺管理方法对农业光伏装置进行了适当调整。经调整的农业光伏装置的成本为每瓦特峰值 0.96 美元。事实证明,这种方法在经济上是可行的,既尊重了作物的农艺条件,又优化了生物质驱动的电热发电基础设施的使用。
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AgriVoltaics: Economic Viability of a Synergistic System in the Sugarcane Bioenergy Sector in Brazil
This study presents an analysis of the economic viability of AgriVoltaics (AV) applied in the sugarcane-bioenergy sector in a hypothetical plant in the central region of the state of São Paulo, Brazil, using modal values and performance parameters typical of the 2019/2020 harvest season. The objective is to verify the economic viability, considering the technical aspects of the project, and agronomic, operational, and systemic requirements. The obtained results show a substantial increase in the combined economic margin, at 33,5%, a land use efficiency ratio (LER) of 108,6%, and a payback of investments around 9 years. The approach proved feasible for energy prices above US$ 49.21 MWh-1 . The greater operational gain was due to the optimization of land use, and the sharing of costs with the existing thermoelectric generation that uses residual sugarcane biomass, which allowed centralized management and a substantial increase in electrical generation. The higher relative incremental cost was resulting from the AgriVoltaics installation, adapted appropriately to the specific agronomic management practices required by sugarcane crops. The cost of the adapted AgriVoltaics installation found was US$ 0.96 per Watt peak. The approach proved economically viable, respecting the agronomic conditions of the crop and the optimized use of biomass-driven electrical thermalgeneration infrastructure.
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