Why rooftop solar makes sense in India right now
India receives some of the highest solar irradiance in the world — 4 to 7 kWh per square metre per day across most states. Combined with rising electricity tariffs, a rooftop solar system typically pays for itself in 4–6 years and generates free electricity for 25 years after that.
The PM Surya Ghar Muft Bijli Yojana has already enrolled 26 lakh+ households and disbursed ₹14,771 crore in subsidies. The central government provides up to ₹78,000 for a 3 kW system — and several states like Gujarat, Rajasthan, and Maharashtra add further top-ups. Our calculator factors all of this in automatically.
Everything you need to decide on solar
Our calculator goes beyond a basic estimate — every figure is tailored to your location, consumption, and available subsidies.
Quick calculator
Instant solar ROI estimate with just your location and monthly electricity bill — no sign-up needed.
Advanced analysis
Fine-tune every parameter — tariff rate, system efficiency, panel degradation — for a precise ROI.
25-year projection
See year-by-year savings and the exact month your system pays for itself.
Location-aware
Real solar irradiance data from PVGIS and state-specific electricity tariffs for accurate results.
Subsidy calculator
Includes PM Surya Ghar central subsidy (up to ₹78,000) and state-level top-ups automatically.
Verified installers
Connect with certified DCR-compliant solar installers in your region — no obligation.
State-specific results
Solar savings calculator for your state
Electricity tariffs, DISCOM net metering rules, and state-level PM Surya Ghar top-up subsidies vary significantly across India. A homeowner in Gujarat sees very different numbers from one in West Bengal.
Each state calculator uses the correct local tariff slabs, irradiance data for your district, and any additional state subsidy — so your estimate reflects what you will actually pay and save.
Or pick your state from the list to get a quick pre-filled estimate.
Most popular states8 states
Other states14 states
North-East & smaller states6 states
Frequently asked questions
Common questions about rooftop solar ROI in India
How accurate is the solar calculator?
The calculator uses real solar irradiance data from PVGIS and state-specific tariff and subsidy figures. Results are indicative estimates — a certified installer will refine them with an on-site assessment. Most users find our estimates within 10–15% of actual quotes.
Which states does the calculator support?
The calculator supports all 28 states and 8 union territories of India, with state-specific electricity tariff rates, DISCOM data, and PM Surya Ghar subsidy figures built in. We also have dedicated solar calculator pages for each state.
What subsidies are included in the calculation?
The calculator includes the PM Surya Ghar Muft Bijli Yojana central subsidy (₹30,000/kW for first 2 kW, ₹18,000/kW for 2–3 kW slab, capped at ₹78,000) and state-level additional subsidies where applicable. Gujarat, Rajasthan, Maharashtra, and Delhi users see significant top-up benefits.
Is this calculator free to use?
Yes, completely free. There is no charge to use the calculator, view your results, or request quotes from solar vendors.
Will I be obligated to buy after submitting my details?
No. Submitting your details connects you with verified installers who may reach out with quotes. You are under no obligation to proceed.
How long does solar panel installation take in India?
A typical residential rooftop installation takes 1–3 days. The full process including DISCOM approval and net meter installation usually takes 4–8 weeks. Subsidy credit to your bank account follows within 30 days of the commissioning certificate.