Want to know how much the government will pay you for installing rooftop solar? Our free PM Surya Ghar subsidy calculator gives you an instant estimate of your ideal system size, installation cost, central subsidy, yearly savings and payback period. Just enter your monthly electricity bill and get your numbers in seconds.
PM Surya Ghar Subsidy Calculator
Estimates only. Assumes ₹65,000 per kW up to 3 kW and ₹60,000 per kW above 3 kW, state-wise solar yield and no tariff change. Actual vendor quotes, state top-ups and DISCOM rules will differ. This is not an official government tool.
How the PM Surya Ghar Subsidy Calculator Works
The calculator works backwards from your electricity bill. It divides your monthly bill by your tariff to estimate units consumed, then matches that against what one kilowatt of solar produces in your state, roughly 100 to 135 units a month. The result is a recommended system size, rounded to the nearest half kilowatt.
From there, it applies the official subsidy slabs to the estimated project cost. Add your roof area or a desired capacity and the tool adjusts the estimate to fit your situation.
PM Surya Ghar Subsidy Amount: Slab Structure
Under PM Surya Ghar: Muft Bijli Yojana, residential households receive Central Financial Assistance (CFA) as direct bank transfer. The subsidy is Rs 30,000 per kW up to 2 kW and Rs 18,000 for the additional capacity up to 3 kW, capped at Rs 78,000 for larger systems.
| System size | Central subsidy |
| 1 kW | Rs 30,000 |
| 2 kW | Rs 60,000 |
| 3 kW | Rs 78,000 |
| Above 3 kW | Rs 78,000 (maximum) |
A 5 kW or 10 kW home system still receives the same Rs 78,000. The extra capacity is paid by you or financed through a bank loan.
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Example Calculations
Here is what the PM Surya Ghar subsidy calculator shows for three typical households, using a Rs 7 per unit tariff:
| Monthly bill | Capacity | Cost | Subsidy | You pay | Payback |
| Rs 1,200 | 1.5 kW | Rs 97,500 | Rs 45,000 | Rs 52,500 | 3.4 yrs |
| Rs 2,500 | 3 kW | Rs 1,95,000 | Rs 78,000 | Rs 1,17,000 | 3.8 yrs |
| Rs 4,200 | 5 kW | Rs 3,00,000 | Rs 78,000 | Rs 2,22,000 | 4.4 yrs |
Notice how payback rises as the system grows past 3 kW. The subsidy stops growing, but the cost keeps climbing.
How to Choose the Right Solar Capacity
Subsidy efficiency is highest at 2 to 3 kW, because every kilowatt in that range earns a high subsidy rate. As a rule of thumb:
Up to 150 units a month: 1 to 2 kW is usually enough.
150 to 300 units a month: 2 to 3 kW is the sweet spot.
Above 300 units a month: go for 3 kW or more, but remember the subsidy is capped.
Also check your roof. You need about 10 sq m of shadow-free space per kW, and water tanks, parapets or neighbouring buildings can cut that down.
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Eligibility for PM Surya Ghar Subsidy
To claim the subsidy, you generally need to:
• Be an Indian citizen with a valid residential electricity connection
• Own a house with a suitable, shadow-free roof
• Not have availed any other central subsidy for rooftop solar at the same premises
• Have an Aadhaar-linked bank account for direct benefit transfer
Commercial, industrial and institutional consumers do not receive the residential subsidy, which is why the calculator shows Rs 0 for those categories.
How to Apply for the Subsidy
1. Register on the national portal, pmsuryaghar.gov.in, with your state, electricity distribution company (DISCOM) and consumer number.
2. Apply for rooftop solar and wait for DISCOM approval.
3. Install the system through a registered vendor.
4. Submit plant details and apply for a net meter.
5. After DISCOM inspection and commissioning, upload your bank details and cancelled cheque.
6. Receive the subsidy in your account, typically within about 30 days of commissioning.
Timelines vary by DISCOM, so confirm the latest process on the official portal before you pay any vendor.
State Subsidies and Deadlines
Some states add their own top-up on the central subsidy, and Delhi and Uttar Pradesh are well-known examples. Rules change often, so check with your state nodal agency or DISCOM. The scheme is also due to run until FY 2026-27, so it is wise to apply well before March 2027.
Tips to Get the Most from Your Subsidy
• Compare at least three quotes from registered vendors
• Pick Tier-1 panels and an inverter with a solid warranty
• Size for your actual consumption, not your maximum roof space
• Ask about net metering charges upfront
• Keep every invoice and photo of the installation
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Frequently Asked Questions
Is the PM Surya Ghar subsidy calculator accurate?
It gives a close estimate based on current slabs and average costs. Your final numbers depend on your vendor quote, roof and DISCOM.
What is the maximum PM Surya Ghar subsidy?
Rs 78,000 for residential systems of 3 kW and above.
Can I get the subsidy for a 5 kW system?
Yes, but it is still capped at Rs 78,000.
Disclaimer: This page is an independent informational resource and is not operated by any government body. Always verify details on the official PM Surya Ghar portal.
