Techno-Economic Feasibility of PV-BESS Based Power Generation for Naval Bases in Bangladesh

An increased demand for electricity and the need
for energy resiliency has increased interest in renewable energy
deployment in the critical infrastructure sector. In this paper,
techno-economic feasibility study of solar photovoltaic (PV) and
battery energy storage system (BESS) at Naval Base Chattogram,
Bangladesh has been explored. The design of the 3,095 kWp
rooftop PV is done with PVsyst 7.4.7 on ten buildings and shoreside structures, resulting in 3.41 GWh of energy yield per year,
and a performance ratio of 73.53%. The power flow management
system was designed in MATLAB, and tested using 2,184 hours
of actual load data to control the power flow between the PV
system, battery storage and the utility grid for the following
five operating modes. The proposed system can achieve selfconsumption rate of 74.7% from the solar energy and exports the
surplus energy in 21.8% of the monitored time while the battery
is always maintained within the recommended SOC range. The
levelized cost of energy is BDT 7.81/kWh, the discounted payback
is 8.4 years, the internal rate of return is 19% and the NPV is
BDT 17.70 crore (based on economic analysis). Furthermore, the
system is estimated to be able to reduce the carbon emissions by
around 1,051 tCO2/year. The results clearly show the technical
feasibility, economic attractiveness and scalability of PV-BESS
for Bangladesh Navy shore establishments