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

Table 14

Final cost savings and payback calculation.

Daily energy usage (no energy-saving measures in place)	5039.8 kWh
Reduced energy usage per day (using efficient appliances)	4268.848 kWh
Energy generated by the PV system per day (peak)	40 kWh
Effective total energy usage per day	4228.848 kWh
Reduction in daily total energy usage	810.952 kWh
Reduction in yearly total energy usage	295997 kWh
Percentage reduction in energy usage	16.09%
Total investment cost	8470950 ₹
Total daily savings	7298.568 ₹
Yearly savings	2663977.32 ₹
Payback period	3.179 years