Solar panel installation cost in India: what you actually pay
There is a difference between the price of solar panels and the total cost of a solar installation. Many homeowners research panel prices and are surprised when the final quote is significantly higher. This guide breaks down every component of what you actually pay for a rooftop solar installation in India, so there are no surprises.
The five cost components of a rooftop solar installation
A complete rooftop solar installation in India has five distinct cost elements. Understanding each one helps you evaluate any quote intelligently.
1. Solar panels
Solar panels typically account for 40 to 50 percent of total system cost. In 2026, quality monocrystalline PERC panels from domestic brands cost approximately Rs 20 to Rs 28 per watt.
For a 3 kW system (3,000 watts), panel cost alone is roughly Rs 60,000 to Rs 84,000.
2. Solar inverter
The inverter converts DC power from panels into AC power for your home. It accounts for 15 to 25 percent of system cost.
A quality string inverter from a reputable brand (Sungrow, Growatt, Delta, Fronius) for a 3 kW system costs Rs 18,000 to Rs 35,000.
A hybrid inverter (which supports battery storage) costs Rs 40,000 to Rs 80,000 for the same system size. This is the right choice only if you specifically want battery backup capability.
3. Mounting structure
The mounting frame that holds your panels on the roof accounts for 8 to 12 percent of system cost. Material choices matter: galvanised iron (GI) structures are standard for most residential installations, while aluminium structures cost more but last longer in high-humidity or coastal environments.
For a 3 kW system, mounting structure cost is typically Rs 12,000 to Rs 22,000.
4. Balance of system
This covers all the wiring, conduits, DC and AC cables, junction boxes, earthing system, lightning arrestors, and safety switches. A proper balance of system installation is important for safety and longevity, but it is often where cost-cutting happens in cheaper quotes.
For a 3 kW residential system, balance of system costs Rs 8,000 to Rs 18,000 when done properly.
5. Installation and labour
Labour costs for installation including civil work (drilling, anchoring, cable routing, panel placement) and commissioning vary by city and complexity.
In metros like Mumbai, Delhi, and Bengaluru, labour costs are Rs 10,000 to Rs 20,000 for a standard 3 kW residential installation. In smaller cities, Rs 6,000 to Rs 14,000.
Total installation cost by system size
| System size | Typical total cost (2026) |
|---|---|
| 1 kW | Rs 60,000 to Rs 85,000 |
| 2 kW | Rs 1.1 lakh to Rs 1.5 lakh |
| 3 kW | Rs 1.5 lakh to Rs 2 lakh |
| 5 kW | Rs 2.3 lakh to Rs 3.2 lakh |
| 10 kW | Rs 4.5 lakh to Rs 6 lakh |
These are fully installed costs including all five components above.
Additional charges that often catch homeowners off guard
Net meter charges
Your DISCOM charges a fee to replace your existing electricity meter with a bidirectional net meter. This typically costs Rs 2,000 to Rs 8,000 depending on the state and DISCOM. Some installers include this in their quote; many do not. Ask explicitly.
Structural assessment fee
If your roof needs a structural assessment before installation (common in older buildings or flat-roof concrete structures), an engineer’s assessment fee of Rs 2,000 to Rs 5,000 may apply.
Additional civil work
Some rooftops require additional anchoring, parapet drilling, or waterproofing work around panel mounts. This can add Rs 5,000 to Rs 25,000 depending on the extent.
Annual maintenance contract
A proper annual maintenance contract (AMC) covering 2 cleaning visits per year and inverter check costs Rs 3,000 to Rs 8,000 per year depending on system size. Some installers bundle 5 years of AMC into the system price. Others charge separately. Clarify upfront.
GST
Solar system installations currently attract GST. The applicable rate has changed over time, so confirm the current rate with your installer and whether it is included in the quoted price.
How costs vary by city
Installation costs are not uniform across India. Cities with higher real estate and labour costs naturally have higher installation charges.
| City tier | Typical premium or discount vs national average |
|---|---|
| Mumbai, Delhi NCR | 15 to 25 percent higher |
| Bengaluru, Chennai, Hyderabad, Pune | 5 to 15 percent higher |
| Jaipur, Ahmedabad, Surat, Nagpur | Around average |
| Smaller cities and towns | 5 to 15 percent lower |
After subsidy: what you actually pay out of pocket
The PM Surya Ghar central government subsidy reduces your upfront cost significantly.
| System size | Total cost before subsidy | Central subsidy | Out of pocket |
|---|---|---|---|
| 1 kW | Rs 60,000 to Rs 85,000 | Rs 30,000 | Rs 30,000 to Rs 55,000 |
| 2 kW | Rs 1.1 lakh to Rs 1.5 lakh | Rs 60,000 | Rs 50,000 to Rs 90,000 |
| 3 kW | Rs 1.5 lakh to Rs 2 lakh | Rs 78,000 | Rs 72,000 to Rs 1.22 lakh |
| 5 kW | Rs 2.3 lakh to Rs 3.2 lakh | Rs 78,000 | Rs 1.52 lakh to Rs 2.42 lakh |
Note: The subsidy arrives as a bank transfer after installation and commissioning, not as an upfront discount. You pay the full installation cost first and receive the subsidy within 30 to 60 days of submitting the commissioning certificate. Plan your cash flow accordingly.
Why cheap quotes can cost more in the long run
A Rs 1 lakh quote for a 3 kW system sounds attractive compared to a Rs 1.6 lakh quote. But the savings at purchase can disappear quickly if:
The inverter is a no-brand or unknown-brand product with no service network. Inverter replacement costs Rs 18,000 to Rs 35,000 and is the most likely failure point in a solar system’s first 10 years.
The panels are low-efficiency or use second-tier cells with higher degradation rates. You end up generating less power annually than the system was sized for.
The mounting structure is lightweight mild steel without proper galvanisation, which corrodes in 5 to 7 years in humid climates.
The wiring uses undersized cables that cause resistive losses and create safety risks.
When comparing quotes, a Rs 40,000 to Rs 50,000 difference in upfront cost can easily be justified by quality if it means avoiding one inverter replacement or degradation-related generation loss over 25 years.
Questions to ask before signing
Ask for the panel brand, model number, wattage, and efficiency rating. Then look up that panel on the manufacturer’s website to verify it exists and carries the stated warranty.
Ask for the inverter brand and model and check that the brand has a service centre within your city or state.
Ask what warranty is provided on installation workmanship, separately from product warranties.
Ask whether the quote includes GST, net meter charges, and annual maintenance.
Ask for the names and contact details of two or three recent local customers whose installations you can visit or call.
Summing up
The total cost of rooftop solar installation in India in 2026 is Rs 1.5 lakh to Rs 2 lakh for a 3 kW system before subsidy. After the PM Surya Ghar central subsidy of Rs 78,000, effective out-of-pocket cost is Rs 72,000 to Rs 1.22 lakh for most households. Understanding what each rupee goes toward, and knowing what legitimate quotes should include, puts you in a strong position to make a good decision.