Solar Rooftop ROI & Payback Calculator
Calculate recommended solar panel capacity (kW), estimated annual bill savings, payback period, and 25-year lifetime return on investment.
Solar Rooftop System Inputs
Enter your monthly usage or available rooftop area to calculate recommended solar capacity and payback period.
2.9 kW
Generates ~4,176 kWh / year
₹35,496
Based on ₹8.5/unit effective rate
3.4 years
Net Investment: ₹1,21,800
Long-Term Financial Return & Savings Projections
⚠️ Official Subsidy Verification Notice
Subsidy rates vary by state, central scheme eligibility (such as PM Surya Ghar Muft Bijli Yojana), and DISCOM net metering rules. Figures shown above are indicative benchmarks. Always verify current official subsidy rates with your DISCOM before placing installation orders.
How Solar Rooftop Systems Save Electricity Bills in India
Net Metering Credit
Solar power generated during daytime feeds back into the DISCOM grid. Net metering credits your monthly bill for generated units.
Avoid High Tariff Slabs
By offsetting 200 - 400 kWh monthly, solar keeps your net DISCOM grid consumption in lower, cheaper tariff slabs.
25-Year Warranted Lifespan
Modern Tier-1 solar PV modules come with 25-year performance warranties, delivering decades of free green electricity after payback.