THE SHORT ANSWER
How much does rooftop solar cost in India?
Rooftop solar in India costs about ₹2.15 to ₹2.6 lakh for 3 kWp and ₹3.1 to ₹3.83 lakh for 5 kWp before subsidy (SolarSquare, indicative, 7 October 2026). PM Surya Ghar gives ₹30,000 for 1 kW, ₹60,000 for 2 kW and ₹78,000 for 3 kW or more (PIB). GST on solar devices fell from 12% to 5% from 22 September 2025.
Prices checked 11–18 October 2026 from the sources below. Nexoforma does not sell or install; it helps you plan and compare quotes.
Use bills and roof conditions as the starting point
Gather recent electricity bills and identify daytime use, sanctioned load and future loads such as cooling or an EV charger. Have qualified professionals assess shading, roof condition, access and structural suitability. A system capacity recommendation should explain the assumptions behind it.
Separate solar generation from backup
Ask what happens during a grid interruption in the exact proposed design. Do not infer backup capability from a rooftop panel installation. If backup is required, specify supported loads, storage, changeover arrangements and the professional responsible for the electrical design.
Compare the net cost carefully
Request separate equipment, installation, approval, metering and maintenance amounts. Treat a possible subsidy as conditional until eligibility and the current process are confirmed. Never assume a quotation or calculator is a government approval or a guaranteed electricity-bill outcome.
Current information to check
The MNRE rooftop portal directs current residential applications to PM Surya Ghar. Confirm scheme eligibility and the local DISCOM process through official channels before relying on an incentive.
MNRE: national rooftop solar portal ↗Sources reviewed on 9 September 2026. Confirm later changes and the requirements for your specific project.
Your enquiry checklist
- Recent bills and planned additional loads
- Roof, structural and electrical assessments
- DISCOM process and responsibilities
- Written subsidy assumptions and exclusions
Questions answered
How much does rooftop solar cost in India?
SolarSquare gives indicative pre-subsidy prices of about ₹2.15 to ₹2.6 lakh for 3 kWp, ₹3.1 to ₹3.83 lakh for 5 kWp and ₹5.7 to ₹6.5 lakh for 10 kWp (base variant, as of 7 October 2026). These are published planning references, not quotes: ask local providers to price the same written scope.
How much is the PM Surya Ghar solar subsidy?
The government’s PIB release gives ₹30,000 for a 1 kW system, ₹60,000 for 2 kW and ₹78,000 for 3 kW or higher. Check eligibility and the current process on the official PM Surya Ghar portal.
What GST applies to rooftop solar?
PIB says GST on solar and renewable energy devices was cut from 12% to 5% from 22 September 2025, making a typical 3 kW rooftop system about ₹9,000 to ₹10,500 cheaper. Installation services in a mixed contract may be taxed differently; ask for GST per line.
Can solar be linked to home automation?
Yes, for monitoring generation and shifting loads like water heating to sunny hours. Confirm the inverter’s monitoring options and data access before buying.
How many kW of solar does a home need?
Start from your electricity bills: annual units used, the roof area available and your DISCOM’s net-metering limits. A provider should show the calculation, not just a package size.
What should a rooftop solar quote include?
Panel and inverter brands and models, structure, wiring, earthing, net-metering application, subsidy paperwork, warranties, monitoring and the AMC. Ask for GST shown per line.
Price sources: SolarSquare: Solar Panel Installation Cost in India in 2026 · PIB: Cabinet approves PM-Surya Ghar: Muft Bijli Yojana · PIB: GST on renewable energy devices rationalised to 5%. Content reviewed .
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