4kW solar system price in India (2026)
Homes running one AC plus a geyser, or two ACs used moderately, the first step past the subsidy cap. Suits a monthly bill of about ₹3,000-4,000. The figures below separate gross installed price, PM Surya Ghar subsidy and benchmark net cost so you can compare installer quotes on the same basis.
~10 panels · ~360 sq ft of shadow-free roof
That's roughly the area of 2.8 car parking spots, counting ~415W panels with walking space for maintenance. Water tanks, parapet shadows, and dish antennas all eat into usable area, so get a site survey before finalizing size.
| Size | Gross (at ₹60k/kW) | Subsidy | Net cost | Units/month | Fits bill of |
|---|---|---|---|---|---|
| 1kW solar system price | ₹60,000 | ₹30,000 | ₹30,000 | ~120 | ₹700-1,000 |
| 2kW solar system price | ₹1,20,000 | ₹60,000 | ₹60,000 | ~240 | ₹1,500-2,000 |
| 3kW solar system price | ₹1,80,000 | ₹78,000 | ₹1,02,000 | ~360 | ₹2,500-3,000 |
| 4kW (this page) | ₹2,40,000 | ₹78,000 | ₹1,62,000 | ~480 | ₹3,000-4,000 |
| 5kW solar system price | ₹3,00,000 | ₹78,000 | ₹2,22,000 | ~600 | ₹4,000-5,000 |
| 6kW solar system price | ₹3,60,000 | ₹78,000 | ₹2,82,000 | ~720 | ₹5,000-6,000 |
| 7kW solar system price | ₹4,20,000 | ₹78,000 | ₹3,42,000 | ~840 | ₹6,000-7,000 |
| 8kW solar system price | ₹4,80,000 | ₹78,000 | ₹4,02,000 | ~960 | ₹7,000-8,000 |
| 10kW solar system price | ₹6,00,000 | ₹78,000 | ₹5,22,000 | ~1200 | ₹8,000-10,000 |
State incentives and local tariffs can change the final economics. Compare your location with thestate-wise solar subsidy calculators.
Collateral-free solar loan at ~7%
- ✓Under PM Surya Ghar, banks offer collateral-free loans of up to ₹2 lakh for residential rooftop systems up to 3kW.
- ✓Interest is capped at roughly 7% p.a. (pegged to repo rate + 0.5%), far below typical personal-loan rates of 11-16%.
- ✓Available through most public sector banks; apply via the Jan Samarth portal or your bank branch with your PM Surya Ghar application ID.
- ✓The subsidy (up to ₹78,000) can be used to prepay the loan once it lands in your account.
Official portals, apply & verify here
We are not affiliated with any government body. Applications and current scheme rules live on these official portals, never pay anyone to "arrange" the subsidy for you.
4kW solar system FAQs
What is the price of a 4kW solar system in India in 2026?
A 4kW grid-tied residential system typically costs ₹1,80,000-₹3,00,000 before subsidy (₹45,000-75,000 per kW depending on brand, structure, and location). At the mid-range benchmark of ₹60,000/kW that's ₹2,40,000 gross, and about ₹1,62,000 after the ₹78,000 central subsidy.
How much subsidy does a 4kW system get?
₹78,000 under PM Surya Ghar. The central subsidy caps at ₹78,000 for 3kW and above, larger systems get the same amount. Some states add a top-up on this, check your state's page.
How many units does a 4kW system generate per month?
Roughly 480 units per month (~5,760 units/year) at the conservative India-wide average of 4 units per kW per day. High-irradiance states like Rajasthan and Gujarat generate 10-20% more; cloudy or hill regions somewhat less.
How much roof space does a 4kW system need?
About 360 sq ft of shadow-free roof (80-100 sq ft per kW). Shadows from water tanks, parapets, or neighbouring buildings cut generation sharply, an installer's site survey will confirm usable area.
Is a 4kW system right for my home?
A 4kW system suits a monthly electricity bill of roughly ₹3,000-4,000. Homes running one AC plus a geyser, or two ACs used moderately, the first step past the subsidy cap.
Not sure 4kW is the right size?
Enter your actual monthly bill and the calculator recommends a size matched to your usage, with subsidy, net cost, and payback for your state. Before applying, keep thePM Surya Ghar document checklist handy.
Size my system from my bill