Enter your monthly electricity bill and state to estimate the right rooftop solar size, your central subsidy under PM Surya Ghar: Muft Bijli Yojana, your cost after subsidy, monthly savings and payback period.
Your estimate
Monthly usage
357 units
System size
3 kW
Estimated system cost
₹1,80,000
Central subsidy
₹78,000
Your cost after subsidy
₹1,02,000
Estimated monthly saving
₹2,500
Payback: about 3.4 years
Estimate only. Central subsidy per PM Surya Ghar: Muft Bijli Yojana; state top-ups not included. Confirm eligibility and amounts on the official portal and get a quote from a registered vendor.
Solar installer? An AI voice agent can call every enquiry in the customer's language and book the site survey. See a real deployment.
Central subsidy per the official PM Surya Ghar slabs
Higher subsidy applied for special category states
Suggested system size from your bill
Cost after subsidy, monthly savings and payback
Every assumption is editable
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See what rooftop solar could cost you after the subsidy and how long it takes to pay back.
Compare system sizes and savings before talking to a vendor.
Share it with enquiries so customers arrive with realistic expectations.
Use the same numbers on calls when explaining subsidy and payback.
Under PM Surya Ghar: Muft Bijli Yojana, residential rooftop solar gets central financial assistance of Rs 30,000 for a 1 kW system, Rs 60,000 for 2 kW, and Rs 78,000 for 3 kW or more (the subsidy is capped at 3 kW). Special category states and UTs, including the North-Eastern states, hill states and island UTs, get 10% more: Rs 33,000, Rs 66,000 and Rs 85,800.
Some states add their own top-up subsidy. This calculator does not include state top-ups; check with your state nodal agency or DISCOM.
The calculator converts your bill into monthly units using your electricity rate, then suggests a system size assuming about 120 units per kW per month, which is a typical estimate for India. Generation varies by location, roof direction and shading, so adjust it if your installer gives you a figure.
Savings are limited to the electricity you would otherwise buy. Installed cost per kW varies by brand and location; replace the default with your quote.
Leads for rooftop solar arrive faster than most sales teams can call. See how a rooftop solar installer books site surveys with a Bengali AI voice agent, and what an AI voice agent for solar companies does on each call.
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