Know the cost. Choose what fits.
Understand solar and EVs before you spend. Put in your electricity bill and get a clear answer for your home or business in about a minute.
Start with your situation
Solar for your home
The right system size, your PM Surya Ghar subsidy and when your money comes back.
Open solar calculatorSolar for your business
Rooftop or a solar park. Your real price per unit after grid fees.
See business optionsElectric vehicles
What an EV costs to run against petrol or diesel, and the solar it takes to charge it.
Open EV calculatorHow it works
- Tell us your bill
Two numbers from your electricity bill. That is all we need to start.
- See the real cost
Subsidy, grid fees and payback worked out, with every figure linked to its source.
- Hear when rules change
Follow your state and we tell you when fees or subsidies move.
Example: a home using 350 units a month
- You pay today
- ₹8.57/unit
- Right system size
- 3 kW
- PM Surya Ghar subsidy
- ₹78,000
- Cost after subsidy
- ₹1.52–1.62 lakh
Saves about ₹36,000 a year and pays back in 4.2 to 4.5 years
A ₹3,000 bill for 350 units, with 2026 installed prices. Your numbers will differ.
Solar system price by size, 2026
Full price guide₹1.2–1.3 lakh2 kW₹1.2–1.3 lakhafter subsidyBefore subsidy
₹1.8–1.9 lakh3 kW₹1.52–1.62 lakhafter subsidyBefore subsidy
₹2.3–2.4 lakh5 kW₹2.47–2.97 lakhafter subsidyBefore subsidy
₹3.25–3.75 lakh10 kW₹5.02–5.72 lakhafter subsidyBefore subsidy
₹5.8–6.5 lakh
Installed price with DCR panels from 2026 price guides, after the central PM Surya Ghar subsidy. Your state may add a top-up; see the PM Surya Ghar guide.
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What is WattDekho?
WattDekho is an independent Indian site that works out what rooftop solar, open access solar and electric vehicles really cost, using government orders, MNRE rules and manufacturer datasheets. We do not sell equipment.
How much does a 3 kW solar system cost in India?
About ₹2.30 to ₹2.40 lakh installed in 2026, or ₹1.52 to ₹1.62 lakh after the ₹78,000 PM Surya Ghar subsidy.
How much subsidy does PM Surya Ghar give?
₹30,000 for 1 kW, ₹60,000 for 2 kW and ₹78,000 for 3 kW or more. Hill, north-eastern and island states get up to ₹85,800.
Is an EV cheaper to run than petrol?
Usually by a wide margin. Charged at home, an electric scooter or car typically costs a fifth or less of petrol per km. The EV calculator works it out for your vehicle.
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