Economics of Residential PV Battery Systems in the Self-Consumption Age
Economics of Residential PV Battery Systems in the Self-Consumption Age
复制标题
自用时代住宅光伏电池系统的经济性
DOI：
10.4229/eupvsec20142014-7do.14.3
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
J. Weniger
中科院分区：
文献类型：
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作者：
V. Quaschning;T. Tjaden;J. Bergner;J. Weniger
本文研究了旨在减少从家庭电网购买电力的光伏电池系统的盈利能力。根据计算配备光伏电池系统的家庭平均电力成本的方法来评估经济可行性。该研究的重点是主要问题：在德国，住宅光伏电池系统在经济上可行的电池系统价格的盈亏平衡点是多少？这是通过确定所需电池系统价格的盈利极限来分析的，这使得在给定情况下对光伏电池系统的投资有利可图。针对定义的参考案例，研究了不同经济输入参数对所需电池系统价格的影响。结果显示，影响因素主要是利率，其次是光伏系统电价、零售电价和上网电价。尽管如此，经济评估仍存在一些不确定性。然而，假设计算出的所需电池价格将在未来实现；投资光伏电池系统比从电网购买全部电力需求更具经济吸引力。
This paper investigates the profitability of PV battery systems that aim to reduce the electricity purchased from the grid of households. The economic feasibility is assessed based on the approach of calculating the mean electricity cost of the household equipped with a PV battery system. The study focuses on the main question: What is the break-even point of the battery system price at which residential PV battery systems become economically viable in Germany? This is analyzed by determining the limit of profitability in terms of required battery system price, which makes the investment in a PV battery system under given circumstances profitable. The impact of different economic input parameters on the required battery system price was studied for a defined reference case. The results reveal that the major factor is the interest rate, followed by the PV system price, retail electricity price and feed-in tariff. Nevertheless, several uncertainties with regard to the economic assessment exist. However, assuming that the calculated required battery prices will be achieved in the future; investing in a PV battery system is financially more attractive than purchasing the entire electricity demand from the grid.