Model the savings from your business roof
Use your own project inputs to estimate annual savings, financing, payback and long-term returns. It is a practical first view of whether solar makes financial sense for your factory, office or institution.
kW
₹ per unit
From your bill, including surcharges.
units per kW a year
Planning figure used on our 2023 savings pages.
₹ per kW
A typical figure is ₹41,000 per kW; your quote gives the exact cost.
%
%
years
100 kW plant, Noida
- Project cost
- ₹41 lakh
- Annual generation
- 1,50,000 units
- Annual bill saving
- ₹11.25 lakh
- Annual EMI on ₹30.75 lakh debt
- ₹7.7 lakh
- Project payback
- 3.6 years
- Equity payback
- 2.9 years
- Project IRR (25 years)
- 26.7%
- Equity IRR
- 44.7%
Twenty-five-year life with 0.7% annual degradation, flat tariff, no O&M or tax modelled. Accelerated depreciation and GST input credit improve the numbers for a company; ask your accountant. Capacities above the sanctioned load may need a zero-export device where net metering is not available.