Payback Period and Life Cycle Emissions of a Commercial Solar Carport with a Virtual Case Study
The solar carport is an infrastructural concept for facilitating charge for electric vehicles. Charging stations (CS) predominantly utilise solar photovoltaics to generate power. From the virtual case study analysis, the generated energy can sell at 0.58 MYR/kWh for 25 years to generate revenue of 2,653.6 kMYR.
The system is represented by a PV array, Grid-connected inverter and DC fast chargers to charge EVs. The proposed system can cater to two processes, namely EV charging and ancillary services. The layout of the solar carport is designed at 280 kWp and installed virtually by utilizing the power of the helioscope tool. The PEVCS can act as a distributed energy generation unit that can deploy or mount at various locations like workplaces, universities, etc. The generated output power can be utilised to charge EVs or feed the grid as an ancillary service. The virtual case study comprises 280 kWp PECS. The energy supplied from the PEVCS will be able to cater to 6675 km drive equivalent of charge. The annual reference incident energy in the collector plane is 4.38 kWh / m2, and array production of 3.67 kWh/kWp/day with the losses of 0.054 produces 3.62 kWh/kWp/day. The annual energy generated is 369.5 MWh with a significant loss of 8.3% due to the increase in module temperature, followed by a 3.7% loss due to Incident angle modification (IAM). In economic analysis, each solar panel is considered for 1153.37 MYR, and inverters are considered for 13,472 MYR, complete wiring is considered 147,350 MYR, and support structures 345.98 MYR. Generally, 30% of the system cost is allotted for the structures along with the prices. The nominal taxes are 6 % without considering any subsidies. The total investment required to install a 280 kWp solar carport is 1616650.41 MYR. Annuities and yearly maintenance cost of 213,573.62 MYR. Availing Project loan for the entire project at a 5% rate of interest for ten years with 12.95% CAP/year can produce energy for 0.58 MYR / kWh.