Energy Audit of a Residential Building to Reduce Energy Cost and Carbon Footprint for Sustainable Development with Renewable Energy Sources

Table 13

PV system cost savings and payback calculation.

Per unit cost of grid electricity	9	Rupees
Total energy generated by the PV system per year	52,800	kW
Total saving per year	475200	Rupees
Project cost	16,80,000	Rupees
Payback period	3.53	Years