Solar Panel Installation Cost in India 2026: Complete Price Guide with Subsidy
Last updated at : Aug 13, 2026
Solar panel installation in India has never been more affordable, but prices still vary a lot depending on system type, components and who is buying. This 2026 guide breaks down the real cost per kilowatt, explains what drives the price up or down, and shows how the PM Surya Ghar subsidy changes the maths for homeowners.
Solar Installation Cost per kW in 2026
The clearest way to understand pricing is on a per-kilowatt basis, because larger systems get cheaper per unit of capacity.
| Segment | Cost per kW (Installed) |
|---|---|
| Residential on-grid | ₹55,000 – ₹85,000 |
| Commercial / industrial | ₹45,000 – ₹50,000 |
On a per-watt basis, a complete installed system runs about ₹55–₹85 per watt for homes, while the solar modules alone cost roughly ₹22–₹35 per watt. Commercial and industrial projects cost less per kW thanks to scale.
Worked Example: A 3kW Home System
| Item | Amount |
|---|---|
| Before subsidy | ₹1.65 – 2.25 lakh |
| PM Surya Ghar subsidy | ₹78,000 |
| After subsidy | ₹87,000 – 1.47 lakh |
A 3kW system generates around 360–400 units per month, enough to cover most homes. After the subsidy, the typical monthly EMI on a financed system is only about ₹900–₹1,000, often less than the bill it replaces.
What Goes Into the Cost
Your final price is shaped by several factors:
- Panel technology — TOPCon and mono PERC cost more than older polycrystalline panels but generate more.
- Inverter brand and type — grid-tie inverters are cheaper than hybrid ones with battery support.
- System type — on-grid is cheapest; hybrid and off-grid cost more because of batteries.
- Roof and structure — flat roofs, tin sheds and elevated structures each need different mounting.
- Location — distance, accessibility and local labour rates all play a part.
The PM Surya Ghar Subsidy
For residential rooftop, the central subsidy is capped at ₹78,000, reached at a 3kW system. This is the single biggest lever on a home's net cost. Commercial and industrial buyers do not use this residential subsidy but can claim accelerated depreciation and other tax benefits, which improve their after-tax returns instead.
Payback and Long-Term Savings
- Payback period: typically 3.5–5 years
- Lifetime savings (25 years, 3kW): around ₹7–9 lakh
- System lifespan: 25+ years for panels
In other words, after a few years of payback, the system delivers two decades of low-cost or free electricity.
Residential vs Commercial Installation
- Homes benefit most from the PM Surya Ghar subsidy and net metering. A residential solar system usually pays back in under five years.
- Businesses and factories benefit from lower per-kW costs and tax incentives. Our industrial solar team handles large-scale rooftop and ground-mounted projects.
If paying upfront is a hurdle, solar loans can spread the cost across EMIs that your savings help offset.
How Solnce Helps
At Solnce Energy, we give you transparent, itemised pricing with no hidden charges, size the system to your real consumption, manage the full subsidy and net-metering process, and install only tier-1 components backed by long warranties. You see exactly what each part costs and what you will save before committing. For more cost guides, visit our solar blog.
Want a precise installation cost for your roof or site? Get a free quote and we'll prepare a detailed plan.
