Benefits from Rooftop Solar at Home

- Continued electricity even on days with insufficient generation via panels
- Excess electricity generated is netted out of the total electricity consumed
- Generated electricity is setoff against the highest-paid slab tariff
- Save an extra 20% tax on electricity which is paid on top of slab tariffs
- Solar Plants become more and more lucrative as a long-term investment  for consumers in high tarriff
- This is driven mostly by the low cost of energy production with solar
- With subsidies, residential customers can achieve the lowest cost of energy consumption over a period of 25 years

- 1 kW generates **4-4.5 units a day**
- Generation in 365 days = 365 x 4 to 4.5 units ~ **1,460 to 1,642 units**
- Assuming 80% days with Sunlight = **1,168 to 1,314 units**
- Warranty of 25 years & 80% performance degradation
- For simplicity, assuming 85-90% efficiency throughout the life = **24,820 to 29,565 units** during lifetime
- Cost of 1kW ranges from **Rs. 50,000 to 75,000**
- Adding Rs. 1000 per year (total Rs. 25,000) for maintainance **Rs. 75,000 to 1,00,000**
- Net Cost of electricity = **Total Cost / Total Units** i.e. **~Rs. 2.54 to 3.38 per unit**