Rooftop solar FAQs

Before subsidy, a 1 kW system costs about ₹72,000 to ₹1,02,000, a 3 kW system ₹1,98,000 to ₹2,28,000, a 5 kW system ₹3,04,500 to ₹3,34,500 and a 10 kW system ₹5,90,000 to ₹6,20,000. Where you land in the range depends on the panel brand, roof type and your site. Homes can get a PM Surya Ghar subsidy of up to ₹78,000, so a 3 kW system comes to about ₹1,20,000 to ₹1,50,000 after subsidy. We give an exact quote after a free site visit.

Most homes see the EB bill drop by 70 to 90%. A 3 kW system saves around ₹3,400 every two months, so it pays back in roughly 6 to 7 years after subsidy. Panels last 25 years or more, so the savings carry on long after that.

It depends on your EB bill and the size of the system. After the PM Surya Ghar subsidy, a 3 kW system for a home with a ₹4,000 Bi-Monthly bill takes roughly 6 to 7 years to pay back. Systems from 3 kW to 10 kW come out at about the same in our calculator, and very small systems take longer. After that the savings carry on for the rest of the panel life, which is 25 years or more. We work out your own number at the site visit, from your actual EB bills.

Houses are eligible for the central PM Surya Ghar Muft Bijli Yojana subsidy: about ₹30,000 for 1 kW, ₹60,000 for 2 kW and ₹78,000 (the maximum) for 3 kW and above. We confirm eligibility after the site visit, and we fill in the subsidy application and the net metering papers for you.

Plan on 80 to 100 sq.ft of shadow-free roof for each kW. That works out to about 250 to 300 sq.ft for 3 kW, 400 to 500 sq.ft for 5 kW and 800 to 1,000 sq.ft for 10 kW. We measure the usable area during the site visit.

We install across Chennai. Our office is at No:4, Solomon Street, Annai Theresa Nagar, East Tambaram, and our work is limited to Chennai.

Yes. We are in East Tambaram and open Monday to Saturday, 9 AM to 6 PM. The Google Maps pin is on our contact page.

The physical installation takes a few days once the material reaches your site. The whole process, including approval from EB, usually takes a few weeks. The approval is the part we do not control, so that is where the timing changes the most.

Our own installation and execution team does the work on your roof. They fit the structure, panels and wiring, then test the system and commission it before it is switched on. The EB approval for net metering comes after that. We file the papers, but the approval itself is EB’s.

Yes, but they produce less on cloudy days. With net metering, the extra units you export in sunny months are adjusted against the monsoon months, so your yearly saving stays about the same. Rain also washes the dust off the panels.

Not much. Wipe the dust off now and then and get the wiring, structure and inverter checked once a year. We offer after-sales service and annual maintenance contracts (AMC) that include checking the output.