Solar Panels for Your Home — Sized for the Way You Actually Use Electricity.

System size should follow your electricity consumption, not your roof size alone. In most parts of India, 1 kW of rooftop solar generates roughly 4 units a day — about 120 units a month. So a home consuming around 300 units a month typically looks at about 3 kW, and a home consuming around 500 units a month at about 4–5 kW. You also need roughly 100 sq ft of shadow-free roof per kW. Final sizing requires a proper assessment of your sanctioned load, roof structure, shading through the day and applicable DISCOM norms.

A well-installed, unshaded 3 kW rooftop system in India typically generates in the region of 11–13 units per day, roughly 340–380 units a month, or about 4,000–4,500 units a year. Actual generation varies with your location's solar irradiation, panel tilt and orientation, shading, ambient temperature, dust and soiling, and seasonal weather.

The cost of a solar system depends on capacity, the panel and inverter technology selected, roof type and mounting structure, cable runs, safety equipment and your location. As a broad indication, residential rooftop systems in India are commonly quoted in the region of ₹55,000 to ₹70,000 per kW before any subsidy, while larger commercial and industrial plants usually cost less per kW because of scale. Eligible residential consumers may reduce the net cost through Central Financial Assistance under PM Surya Ghar. Component prices move with the market, so always ask for a written, itemised quotation.

Central Financial Assistance is available to eligible residential consumers under the PM Surya Ghar: Muft Bijli Yojana, subject to the scheme's current rules. It applies to residential rooftop installations and is not available to commercial or industrial installations under this scheme. Eligibility, vendor requirements, DISCOM approvals and disbursal are governed by official guidelines, which can change. Always verify current details on the official PM Surya Ghar portal.

PM Surya Ghar: Muft Bijli Yojana is a Government of India scheme that provides Central Financial Assistance to eligible residential consumers installing rooftop solar. Under the applicable structure, assistance is up to ₹30,000 for a 1 kW system, up to ₹60,000 for 2 kW, and up to ₹78,000 for systems of 3 kW and above. The process generally involves registering on the national portal, installing through a registered vendor, DISCOM approval and inspection, and net-meter installation before assistance is credited. Scheme terms are subject to change — confirm on the official portal.

Solar modules from established manufacturers are generally supplied with a performance warranty of around 25 to 30 years, with output degrading gradually over that period. Inverters typically carry a shorter warranty — commonly 5 to 12 years — and are often replaced once during the life of the system. Actual warranty terms depend on the specific make and model supplied, and are stated in your project documentation.