Price, subsidy and output
Rooftop solar price by size, 2026
| System | Installed price | Subsidy | After subsidy | Units a month | EMI (10 years) |
|---|---|---|---|---|---|
| 1 kW | ₹1.2 lakh to ₹1.3 lakh | ₹30,000 | ₹0.9 lakh to ₹1 lakh | 120 | ₹1,235 |
| 2 kW | ₹1.8 lakh to ₹1.9 lakh | ₹60,000 | ₹1.2 lakh to ₹1.3 lakh | 240 | ₹1,828 |
| 3 kW | ₹2.3 lakh to ₹2.4 lakh | ₹78,000 | ₹1.52 lakh to ₹1.62 lakh | 360 | ₹2,555 |
| 4 kW | ₹2.77 lakh to ₹3.08 lakh | ₹78,000 | ₹2 lakh to ₹2.29 lakh | 480 | ₹3,180 |
| 5 kW | ₹3.25 lakh to ₹3.75 lakh | ₹78,000 | ₹2.47 lakh to ₹2.97 lakh | 600 | ₹3,805 |
| 10 kW | ₹5.8 lakh to ₹6.5 lakh | ₹78,000 | ₹5.02 lakh to ₹5.72 lakh | 1,200 | ₹6,686 |
Price per kW falls as systems get bigger, because the net meter, wiring, earthing and installation visit cost about the same for any size. The subsidy works the other way: it stops at 3 kW. So for most homes, the sweet spot is the size that matches the units you actually use, up to 3 kW, and bigger only if you have the load for it. Buying panels on their own? See solar panel price per watt.
What the price should include
- Panels with Indian cells (DCR) from the ALMM list, needed for the subsidy.
- An on-grid inverter sized to the panels.
- Mounting structure, DC and AC cables, earthing and lightning protection.
- The net meter application with your DISCOM, and installation.
- Five years of maintenance from the vendor.
Which size do you need?
Divide the units on a typical monthly bill by 120. A home using 250 units needs about 2 kW; 350 units, about 3 kW; 600 units, about 5 kW. The solar calculator does this from your bill and state, and the roof area calculator tells you what fits.
Frequently asked questions
How much does rooftop solar cost for a home in India?
In 2026, about ₹1.20 to ₹1.30 lakh for 1 kW, ₹2.30 to ₹2.40 lakh for 3 kW and ₹3.25 to ₹3.75 lakh for 5 kW, before the PM Surya Ghar subsidy of up to ₹78,000.
What is the solar price per kW?
About ₹1.2 lakh per kW at 1 kW, falling to about ₹77,000 to ₹80,000 per kW at 3 kW and ₹65,000 to ₹75,000 at 5 kW, before subsidy.
Is a bigger system always better value?
Only if you use the units. Units you export earn net metering credit, often at a lower rate than you pay, and the subsidy does not grow above 3 kW.
Figures and sources: how we calculate.