Table 8: Estimation of payback period against new installing cost.

Parameters Case-1 Case-2
PV Panels 1 pcs 2 pcs
Batteries 4 pcs 4 pcs
Induction Motor 1 pcs 1pcs
Power Supply from PV Module (per day) 12-14% of 9 kW 25-30% of 9 kW
Cost Reduction (per day) 27-32 BDT (around 0.35 USD) 55-62 BDT (around 0.73 USD)
Payback Period (yr.) Around 4-4.5 yrs. maximum Around 2-2.5 yrs. maximum