PM Surya Ghar rooftop solar subsidy calculator

Who is installing?

A home Housing society / RWA

State or union territory

North-eastern, hill and island states get a higher subsidy.

System size 3 kW

kW

1 kW usually needs about 80–100 sq ft of shade-free roof.

Installed cost per kW

₹

Electricity tariff

₹/unit

Generation per kW per day

units

Around 4 units a day is typical in most of India; sunnier regions see more.

Central subsidy (CFA)

₹78,000

For a residential rooftop system

Subsidy 47%You pay 53%

System cost: ₹1,65,000
Your cost after subsidy: ₹87,000
Generation per month: 360 units
Savings per year: ₹30,240
Payback period: 2.9 years

Rates follow the PM Surya Ghar guidelines of February 2024. Confirm current rates and eligibility on pmsuryaghar.gov.in before quoting.

How the subsidy is calculated

PM Surya Ghar pays central financial assistance (CFA) on the size of the rooftop system, not its price. For homes, the first 2 kW earn ₹30,000 per kW and the third kW earns ₹18,000. Anything above 3 kW adds nothing more, so the subsidy is capped at ₹78,000.

System size (home)	Subsidy	Special category states
1 kW	₹30,000	₹33,000
2 kW	₹60,000	₹66,000
3 kW	₹78,000	₹85,800
5 kW or more	₹78,000	₹85,800

Housing societies and resident welfare associations receive ₹18,000 per kW for common facilities, for systems up to 500 kW.

How savings and payback are estimated

Monthly generation is the system size × units generated per kW per day × 30. Yearly savings multiply that by 12 and by your electricity tariff. The payback period is your cost after subsidy divided by yearly savings. Actual results depend on shading, roof direction, dust, maintenance and your DISCOM’s net-metering rules, and some states add their own incentives on top of the central subsidy.

FAQ

Questions about the rooftop solar subsidy calculator

Do this every day?Solar EPC Software — Rooftop solar EPC & subsidy ERP.See Solar EPC Software

How much subsidy is available for a 3 kW rooftop solar system?

Under PM Surya Ghar, homes receive central financial assistance of ₹30,000 per kW for the first 2 kW and ₹18,000 per kW for the third kW — ₹78,000 for a 3 kW system. Larger home systems are capped at ₹78,000. Special category states and union territories receive about 10% more.

Which states get the higher special category subsidy?

The north-eastern states including Sikkim, Himachal Pradesh, Uttarakhand and the union territories of Jammu and Kashmir, Ladakh, Lakshadweep and the Andaman and Nicobar Islands.

How much can a housing society or RWA get?

Group housing societies and resident welfare associations can receive ₹18,000 per kW for common facilities such as lighting and EV charging, for systems up to 500 kW. Choose “Housing society / RWA” in the calculator.

How accurate is the payback period?

It is an estimate from the numbers you enter: installed cost per kW, your electricity tariff and expected generation. Real generation depends on location, shading, roof direction and maintenance, and net-metering rules differ between DISCOMs.

Where do I apply for the subsidy?

Applications are made on the national PM Surya Ghar portal (pmsuryaghar.gov.in), and the system must be installed by a registered vendor. Always confirm the current rates and eligibility on the portal before quoting.

More free tools

Loan EMI calculatorWork out the monthly EMI, total interest and a year-by-year repayment schedule for home, business, car or personal loans. DSA commission calculatorCalculate a loan DSA’s payout on a disbursement, including GST on the invoice, TDS deducted by the lender and the sub-DSA partner’s share. GST invoice generatorCreate a GST tax invoice in your browser with automatic CGST, SGST or IGST, amount in words and GSTIN checks, then print or save it as PDF.

Let’s talk

Stop doing this in spreadsheets. Run it in Solar EPC Software.

Book a 30-minute walkthrough with a product specialist. We’ll show you your own workflow — not a generic slide deck.

Book a free demo Chat on WhatsApp