Solar Panel Installation Cost in India 2026: A Line-by-Line Breakdown

Two installers quote you for the same 5kW rooftop system. One says ₹2,90,000. The other says ₹3,60,000. Both quotations read "5kW solar system, complete installation." Neither breaks down what is inside that number.

The cost for solar panel installation is not one number. It is roughly eight line items, and the cheaper quote is usually cheaper because two or three of them are missing. This guide shows what each line should cost in 2026, what legitimately changes the price, and what disappears from bargain quotations. For panel pricing across technologies and wattages, see our solar panel price in India guide.

What does solar panel installation cost in India?

A complete residential solar installation costs roughly ₹55,000 to ₹75,000 per kW in 2026, all inclusive. That works out to about ₹55 to ₹75 per watt installed.

System size	Total installed cost	Typical buyer
1 kW	₹60,000 to ₹75,000	1 BHK, lights and fans
2 kW	₹1,20,000 to ₹1,45,000	Small family home
3 kW	₹1,80,000 to ₹2,10,000	2 to 3 BHK with one AC
5 kW	₹3,00,000 to ₹3,45,000	Larger home, multiple ACs
10 kW	₹5,50,000 to ₹6,50,000	Shops, offices, small factories

The per-kW rate drops as the system grows. A 1kW system runs about ₹70,000 per kW while a 10kW system lands nearer ₹58,000, because the site visit, net metering application, and crew travel do not double when the system does. Keep two per-watt numbers straight: the panel-only rate (₹20 to ₹34) is what module suppliers quote, while ₹55 to ₹75 is what you pay to get power flowing. For the most popular size, see our 3kW solar system price guide.

The line-by-line breakdown of a solar quotation

Here is what sits inside a 5kW quotation:

Line item	Cost (5kW)	% of total	What to check
Solar panels	₹1,25,000 to ₹1,60,000	45 to 50%	Wattage, technology, ALMM listing
Grid-tied inverter	₹45,000 to ₹60,000	16 to 18%	Brand, warranty, MPPT count
Mounting structure	₹25,000 to ₹35,000	9 to 11%	GI vs aluminium, wind load rating
DC and AC cabling	₹12,000 to ₹18,000	4 to 6%	Cable gauge, UV rating, length
Earthing and lightning arrestor	₹8,000 to ₹12,000	3 to 4%	Number of earth pits (should be 3)
ACDB and DCDB boxes	₹6,000 to ₹10,000	2 to 3%	SPD and MCB ratings
Installation labour	₹12,000 to ₹18,000	4 to 6%	Includes testing and commissioning
Net metering and liaison	₹3,000 to ₹8,000	1 to 3%	DISCOM fees vary by state
Total	₹3,00,000 to ₹3,45,000	100%

The panels are only about half of what you pay, which surprises most first-time buyers. The inverter is the second largest line and the one most worth paying up for: a failed inverter takes the whole system offline, while one underperforming panel costs you a fraction of your generation.

Labour is smaller than people expect at 4 to 6%, and it should always cover testing and commissioning, not just physical mounting. If labour appears as a vague "service charge" with no scope attached, ask what happens when the DISCOM inspection flags something and rework is needed.

What actually changes your installation cost

1. Roof type

Roof type moves the structure line more than anything else. A tin shed takes a simple rail mount at the low end of the range. A flat RCC terrace needs an elevated tilt structure with concrete pedestals, adding ₹8,000 to ₹15,000 on a 5kW system. Ground mounts cost the most because of foundation work.

1. Location and DISCOM

Net metering fees, inspection charges, and liaison effort vary widely by state. Some DISCOMs clear applications in two weeks, others take two months and demand repeat site inspections. Installers price that administrative risk in, which is why the same system can cost ₹10,000 more in one state than another.

1. Panel technology and wattage

Higher-wattage panels cut total system cost even though each module costs more. A 5kW system needs ten 500Wp panels but only nine 600Wp ones, and fewer panels means less structure, less cabling, fewer clamps, and less labour. Technology works the same way: N-Type TOPCon modules such as the G12R 132 Series reach up to 23.51% efficiency, delivering a given kW from less roof area and less mounting hardware. Current module rates are in our TOPCon solar panel price guide.

Five costs missing from cheap quotations

When one quote comes in 20% below the others, these are usually why:

1. Earthing pits

A proper installation has three separate earth pits, one each for the panel frames, the inverter, and the lightning arrestor. Cheap quotes cut this to one, saving around ₹6,000 and creating a real safety risk.

1. Surge protection

ACDB and DCDB boxes with surge protection devices cost ₹6,000 to ₹10,000. Skipping them saves money until the first lightning event takes out your inverter.

1. Net metering liaison

Some quotes exclude the DISCOM application entirely and leave you to handle it. Ask whether approval is included or billed separately.

1. Non-ALMM panels

Modules outside the MNRE approved list are cheaper but disqualify you from the subsidy, which costs far more than the saving. Check for BIS certification too.

1. Structure grade

Thin-gauge galvanised steel rusts within a few years in coastal or humid areas. Ask for GI thickness and wind load rating in writing.

One more item to confirm is not a cost but a liability: warranty terms. The panels, the inverter, and the workmanship carry three separate warranties from three different parties. Our solar panel warranty guide explains what each should say.

How long installation takes

Physical installation of a residential rooftop system takes three to five days: one to two days for the mounting structure, one to two for panels and wiring, and one for the inverter, protection boxes, and earthing.

The full timeline from booking to commissioning runs four to ten weeks, and almost all of that gap is paperwork. Subsidy registration and the DISCOM net metering application run in parallel over two to eight weeks, followed by a utility inspection and the bidirectional meter swap. When an installer quotes two months, they are quoting the DISCOM, not their crew.

How subsidy changes your net cost

The PM Surya Ghar Muft Bijli Yojana subsidy applies to the total installed cost of a residential grid-connected system, not just the panels:

System size	Installed cost	Subsidy	Net cost to you
1 kW	₹60,000 to ₹75,000	₹30,000	₹30,000 to ₹45,000
2 kW	₹1,20,000 to ₹1,45,000	₹60,000	₹60,000 to ₹85,000
3 kW and above	₹1,80,000 to ₹2,10,000	₹78,000 (capped)	₹1,02,000 to ₹1,32,000

Note the cap. The subsidy stops rising above 3kW, so a 5kW system receives the same ₹78,000 as a 3kW one. That is why 3kW is the most popular residential size in India. Applications go through pmsuryaghar.gov.in, and our PM Surya Ghar Yojana subsidy guide covers eligibility and documents.

How to read a quotation before you sign

Take any quotation you receive and check these six things:

1. Is every line item from the breakdown table above listed, with a price against it?
2. Are the panel model number and wattage stated, and is that model on the ALMM list?
3. How many earth pits are included?
4. Are ACDB and DCDB boxes with surge protection listed separately?
5. Is net metering application and liaison included or extra?
6. Are the panel, inverter, and workmanship warranties stated separately with durations?

A document that cannot answer these is not a quotation, it is a price tag. Ask for the itemised version before comparing it against anything else. To size your system first, run your monthly units and roof area through our free Solar Calculator. For N-Type TOPCon modules made at our fully automated plant in Rajkot with AI and AOI robotic inspection on every module, WhatsApp us at +91 90990 88489 or request a quote.

Frequently asked questions

What is the solar panel installation cost in India in 2026?

A complete residential installation costs roughly ₹55,000 to ₹75,000 per kW, all inclusive. A 3kW system lands at ₹1,80,000 to ₹2,10,000 and a 5kW system at ₹3,00,000 to ₹3,45,000 before subsidy.

How much of the cost is the panels themselves?

Panels account for roughly 45 to 50% of the total. The inverter is 16 to 18%, mounting structure 9 to 11%, and the remaining 20 to 25% covers cabling, earthing, protection devices, labour, and net metering.

Why do two installers quote such different prices for the same system?

Usually because of missing line items rather than genuine efficiency. Common omissions are proper earthing pits, surge protection boxes, and net metering liaison. Cheaper panels outside the ALMM list also cut the price while disqualifying the subsidy.

Does the government subsidy cover installation cost or only panels?

It applies to the total installed system cost, not just the modules. For a 3kW or larger residential system the amount is ₹78,000, credited to your bank account after commissioning and inspection.

How long does solar panel installation take?

Physical installation takes three to five days. The full timeline from booking to commissioning runs four to ten weeks, with most of that spent waiting for DISCOM net metering approval.