Collective self-consumption of solar photovoltaic and batteries for a micro-grid energy system

• Published in: Results in engineering 2023-03, Vol.17, p.100925, Article 100925
• Main Authors: Hassan, Qusay, Abbas, Majid K., Tabar, Vahid Sohrabi, Tohidi, Sajjad, Al-Hitmi, Mohammed, Jaszczur, Marek, Sameen, Aws Zuhair, Salman, Hayder M.
• Format: Article
• Language: English
• Subjects: Battery storage; Photovoltaic array; Self-consumption; Solar energy; Techno-economic analysis
• ISSN: 2590-1230; 2590-1230
• DOI: 10.1016/j.rineng.2023.100925

The paper carried out a techno-economic analysis in order to obtain the optimum battery storage capacity in conjunction with a photovoltaic array that can match the desired household load at highest possible self-consumption. In addition, it determined the economic feasibility of a proposed micro-system. Annual energy consumption, irradiance, and ambient temperature were measured at 1-min resolution for the year 2021. Simulations of a stationary economic model are performed for the years 2021 through 2030.The results showed that the photovoltaic array at 2.7 kWp capacity can generate an annual energy of approx. 4295.4 kWh and the optimal battery capacity which can satisfy 91.1% of self-consumption and energy cost of $0.256/kWh is 14.4 kWh. Furthermore, two third-order polynomial relationships between self-consumption and net present cost with energy cost were solved. •Techno-economic evaluation of renewable micro-grid photovoltaic/battery system.•The optimal battery size for a solar-powered application at high self-consumption.•Sizing, simulation and optimization by linking self-consumption and energy cost.•Realistic design and techno-economic evaluation of a battery for a solar-powered application.