Understanding the PM Surya Ghar Muft Bijli Yojana Subsidy Structure
Knowing how to calculate solar subsidy accurately helps Indian homeowners plan their rooftop solar installation budget without unexpected financial gaps. Under the PM Surya Ghar Muft Bijli Yojana, financial assistance is structured based on the total capacity of your grid-connected rooftop solar system.
Systems up to 2kW receive ₹30,000 per kW. A 3kW system receives ₹60,000 for the first two kilowatts plus an additional ₹18,000 for the third kilowatt, bringing the total to ₹78,000. Any residential system sized above 3kW is subject to a hard cap of ₹78,000 maximum financial support from the central scheme.
Step-by-Step Subsidy Calculation Examples
Working through specific capacity scenarios clarifies the exact financial support you can expect before purchasing equipment through an authorized installer.
| System Capacity | Calculation Breakdown | Total Subsidy Amount |
|---|---|---|
| 1.5 kW | 1.5 kW multiplied by ₹30,000 per kW | ₹45,000 |
| 2.5 kW | (2 kW x ₹30,000) + (0.5 kW proportional rate) | ₹69,000 |
| 5.0 kW | Capped at the 3kW and above ceiling limit | ₹78,000 |
For a 1.5kW system, the math is straightforward at ₹30,000 per kW. For a 2.5kW setup, you receive ₹60,000 for the first 2kW and a proportional ₹9,000 for the remaining 0.5kW. For a 5kW system, the subsidy stops at the ₹78,000 ceiling.
Solar Generation, Savings, and Warranties
A 1kW rooftop solar system in India generates roughly 90 to 120 units per month, while a 3kW system produces approximately 270 to 360 units monthly. With residential grid tariffs across Indian states typically ranging between ₹6 and ₹9 per unit, higher monthly generation directly lowers electricity bills.
Equipment reliability is backed by standard manufacturing safeguards. Panels carry a 25-year performance warranty maintaining roughly 80 percent output by year 25, alongside a 10 to 12 year product warranty protecting against structural defects.
Net Metering and Application Process
Net metering allows you to export excess solar electricity generated during daytime hours back to the local utility grid in exchange for credits on your monthly power bill. Net metering is available in all major states under MNRE guidelines established in 2022.
Homeowners do not file paperwork independently. Applications for both the subsidy scheme and the net meter are submitted through your registered solar installer or directly via the local DISCOM portal.
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