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Advances in Energy Research
  Volume 8, Number 1, March 2022 , pages 59-71
 open access

Techno-economic design of a grid-tied Photovoltaic system for a residential building
Asad A. Naqvi, Talha Bin Nadeem, Ahsan Ahmed, Muhammad Uzair and S. Asad Ali Zaidi

    Increasing cost of electricity due to rising price of fuel is one of the local community's main issues. In this research, switching of grid dependent system to the grid-tied Photovoltaic (PV) system with net metering for a residential building is proposed. The system is designed by considering the maximum energy demand of the building. The designed system is analyzed using RETScreen on technical, economic and environmental grounds. It is found that the system is able to produce 12,000 kWh/year. The system is capable to fulfill the electricity demand of the building during day time and is also capable to sell the energy to the local grid causing the electric meter to run in reverse direction. During night time, electricity will be purchased from grid, and electric meter will run in the forward direction. The system is economically justified with a payback period of only 3 years with net present value of PKR. 4,758,132. Also, the system is able to reduce 7.2 tons of CO2 not produced in the entire life of the project.
Key Words
    economic analysis; grid-tied PV system; residential building; RETScreen
Asad A. Naqvi, Talha Bin Nadeem, Ahsan Ahmed, Muhammad Uzair: Department of Mechanical Engineering, NED University of Engineering and Technology, Karachi, Pakistan
S. Asad Ali Zaidi: School of Computing Engineering and Digital Technology, Teeside University, Middlesbrough, Tees Valley, UK

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