Most solar quotes arrive as a single number: “3kW system, ₹1.85 lakh, all inclusive.”
That makes it almost impossible to tell whether the price is fair, or what you’d be giving up by choosing the cheaper quote. If you’re researching solar panel installation cost in India in 2026, the most useful thing you can do is break that number into its parts.
This guide does exactly that: panels, inverter, structure, wiring, earthing, net meter and labour, using a typical 3kW home system as the example, with sources for each figure.
What Does Solar Installation Cost in 2026?
A typical 3kW on-grid home system in India costs roughly ₹1.25 lakh to ₹2.3 lakh installed in 2026, before subsidy. Panels are the biggest single item. The mounting structure is the item that varies most, and earthing, wiring and the net meter make up the rest. For eligible homes, the PM Surya Ghar subsidy then reduces the cost by up to ₹78,000.
| Line item (3kW home system) | Typical 2026 range | Share of total |
| Solar panels (DCR, about 3kWp) | ₹75,000 – ₹1,00,000 | Largest item |
| On-grid inverter (3kW) | ₹15,000 – ₹40,000 | Second-largest |
| Mounting structure | ₹9,000 – ₹42,000 | Varies most with roof type and height |
| DC wiring and protection | ₹5,000 – ₹10,000 | Small but essential |
| AC wiring and protection | ₹3,500 – ₹7,000 | Small but essential |
| Earthing, lightning arrester and surge protection | ₹8,000 – ₹14,000 | Safety-critical |
| Net meter (DISCOM) | About ₹2,800 – ₹10,000 | Depends on DISCOM and phase |
| Installation labour, commissioning and paperwork | ₹7,000 – ₹12,000 | Varies by installer |
| Approximate total | ₹1.25 lakh – ₹2.3 lakh |
The rest of this guide explains each line, why the range is so wide, and what to check in your own quote.
1. Solar Panels: The Biggest Cost
Panels usually make up the largest share of a home system’s cost.
What drives panel price
- DCR vs non-DCR: DCR (Domestic Content Requirement) panels are made with Indian solar cells. They’re required for the PM Surya Ghar subsidy, and they cost noticeably more. In JMK Research’s January 2026 data, DCR TOPCon modules averaged about ₹27.44 per watt wholesale, against about ₹16.36 per watt for domestic non-DCR TOPCon. JMK reported prices as stable through September 2026.
- Technology: N-type TOPCon panels are now common. They’re more efficient and handle heat better than older Mono PERC panels, at only a small price difference.
- Brand and warranty: established brands with 25–30 year performance warranties cost more than lesser-known ones.
What this means for a 3kW system
At the January 2026 wholesale DCR price, 3kWp of panels costs about ₹82,000 before distribution and installer margins. That’s why most quotes for subsidised 3kW systems show panels in the ₹75,000–₹1,00,000 range.
Why it’s worth paying for DCR on a home system: non-DCR panels save money upfront, but you lose the subsidy, which is ₹78,000 for a 3kW system. For a subsidised home, DCR almost always wins.
Our DCR vs non-DCR panel guide explains the difference.
2. Inverter: The Second-Biggest Item
The on-grid inverter converts the panels’ DC power into AC power for your home, and synchronises with the grid.
| Capacity | Dealer price before GST (Solar Calculators, Oct 2026) | Retail by brand (Solar Ace Energy, 2026) |
| 3kW on-grid | ₹13,000 – ₹20,000 | About ₹23,000 – ₹60,000 |
| 5kW on-grid | ₹17,000 – ₹26,000 | Not listed |
| 10kW on-grid (three-phase) | ₹30,000 – ₹50,000 | Not listed |
The range is wide for two reasons:
- Price lists differ. Dealer prices before GST are much lower than the retail prices installers pay for premium brands. In practice, most 3kW home quotes fall somewhere between about ₹15,000 and ₹40,000.
- Brand and warranty matter. Premium brands with 10-year warranties and better monitoring sit at the top of the range.
What to check:
- the inverter suits your supply: single-phase or three-phase
- it’s approved for grid connection by your DISCOM
- it has app-based monitoring, so you can spot faults early
- the warranty length, and who services it locally
A hybrid inverter, which works with a battery, costs considerably more. Choose one only if you need backup during power cuts.
In Kerala, also check the transformer capacity before applying, using our KSEB solar feasibility check guide.
3. Mounting Structure: The Most Variable Item
The structure holds your panels in place for 25 years through monsoon winds and coastal humidity. Its cost depends mostly on height and roof type.
| Structure type | Indicative cost per kW | For a 3kW system |
| Flush mount / tin-shed clamps | ₹3,000 – ₹4,500 | ₹9,000 – ₹13,500 |
| Standard fixed tilt (RCC roof, 3–5 ft) | ₹6,000 – ₹8,500 | ₹18,000 – ₹25,500 |
| Elevated (8–10 ft, usable space below) | ₹10,000 – ₹14,000 | ₹30,000 – ₹42,000 |
- Why it matters: a cheap, thin structure saves a few thousand rupees but can rust or deform within a few monsoons. Ask what material is used (hot-dip galvanised steel or aluminium), what thickness, and whether it’s designed for your area’s wind conditions. Coastal homes need extra corrosion protection.
- Elevated structures cost more but leave the terrace usable underneath, for drying clothes, water tanks or as a shaded space. Decide on this before you compare quotes, because it can change the total by ₹20,000 or more.
4. Wiring and Protection (Balance of System)
Wiring and protection devices are cheap compared with panels, but they decide whether your system is safe.
| Item | What it includes | Indicative cost (3kW) |
| DC side | Solar DC cable, MC4 connectors, DC isolator, fuses, conduit | ₹5,000 – ₹10,000 |
| AC side | AC cable, AC isolator, MCB, RCCB, conduit | ₹3,500 – ₹7,000 |
- The cost rises if your inverter or meter is far from the roof, because longer cable runs add up quickly.
- Watch out for: quotes that bundle all of this as “accessories” without listing it. Ask for UV-resistant DC solar cable, proper MC4 connectors, and cables run neatly in conduit, not loose across the roof.
5. Earthing, Lightning Arrester and Surge Protection
This is the line most often cut from low-priced quotes, and the one you should never skip.
- Earthing: dedicated earth pits for the panel frames and structure, and for the inverter.
- Lightning arrester: protects the system and your home from lightning strikes, which are common during South Indian monsoons.
- Surge protection devices (SPDs): on both the DC and AC sides.
- Indicative cost for a 3kW system: about ₹8,000 – ₹14,000, according to the same QuickEstimate breakdown.
- If a quote is much cheaper than others, check this line first. Missing or poor earthing can make the system unsafe and may affect DISCOM approval.
6. Net Meter and DISCOM Charges
An on-grid system needs a bi-directional (net) meter, which records both the units you import from the grid and the units you export.
Example from Tamil Nadu: in a circular dated 18 May 2024, TANGEDCO reduced its net meter charges to ₹2,764 for a single-phase meter and ₹5,011 for a three-phase meter, and stopped collecting testing fees. Other DISCOMs set their own charges, so ask your installer for your DISCOM’s current fees.
Some quotes include the net meter and application fees, and others list them separately. Make sure you know which.
For the Tamil Nadu application process, see our TANGEDCO net metering application guide.
7. Installation Labour, Commissioning and Paperwork
This line covers:
- installing the structure, panels, inverter and cabling
- testing and commissioning the system
- the single-line diagram (SLD) and technical documents
- the DISCOM application, plus PM Surya Ghar portal steps for subsidised homes
- Indicative cost for a 3kW system: about ₹7,000 – ₹12,000. Some installers fold this into the total rather than listing it.
- Why paperwork support matters: subsidy claims can stall if installation details are uploaded wrongly, or if an inspection raises a defect. An installer who handles this properly saves you weeks of follow-up.
GST on Solar Installation
GST on solar modules and other renewable energy devices was cut from 12% to 5% from 22 September 2025.
- A complete supply-and-installation contract usually includes both goods and services.
- One 2026 breakdown applies the commonly used 70:30 split (70% of the value as goods at 5%, 30% as services at 18%), giving an effective GST of about 8.9% on the whole contract.
- Ask your installer how GST is calculated in your quote, and whether the quoted price includes it.
After Subsidy: What You Actually Pay
For eligible homes under PM Surya Ghar, the central subsidy is:
| System size | Central subsidy |
| 1kW | ₹30,000 |
| 2kW | ₹60,000 |
| 3kW and above | ₹78,000 (maximum) |
Your effective cost = installed price − central subsidy − state top-up (if any).
Example: a 3kW system quoted at ₹1.8 lakh, minus the ₹78,000 subsidy, works out to about ₹1.02 lakh. In Tamil Nadu, eligible households registered on the PM Surya Ghar portal on or after 5 August 2026 can get a further ₹22,000 for 3kW under the state top-up.
Always verify subsidy amounts and vendor registration on the official portal,pmsuryaghar.gov.in.
Why Two Quotes for the Same Size Can Differ by ₹60,000
| Cheaper quotes often has | Costlier quotes often has |
| Unnamed or lesser-known panels | Named DCR TOPCon panels with datasheets |
| A basic inverter with a short warranty | A well-supported brand with app monitoring |
| A low, thin structure | Hot-dip galvanised steel, elevated or designed for wind |
| Earthing or lightning arrester left out | Full earthing, lightning arrester and SPDs |
| Net meter and DISCOM fees excluded | Net meter and paperwork included |
Neither quote is automatically right. Compare them line by line, and only then look at the price per kW.
5kW Solar Panel Price with Subsidy in India – Complete Cost Breakdown
Costs That Often Appear After You Sign
Some costs aren’t in the first quote and only appear once work starts. Ask about each one upfront:
- Extra cable length: if the inverter or meter is far from the roof, longer cable runs add cost.
- Civil work: cutting into parapets, building a small platform for the inverter, or extra waterproofing.
- A change of structure height: switching from a standard to an elevated structure after the site visit.
- Meter relocation: if the existing meter board has to be moved or upgraded to fit the net meter.
- Load enhancement: if your sanctioned load is lower than the system size, the DISCOM may require a load increase, which has its own fees.
- Maintenance after the free period: cleaning and inspection visits are often free only for the first year or so.
How to protect yourself: ask for a quote that lists every item, says which of the above are included, and states the price of anything extra before work begins.
How Cost Changes with System Size
The cost per kW usually falls as system size grows. Fixed costs such as the net meter, earthing, paperwork and the site visit are spread over more kilowatts, and larger inverters cost less per kW.
- For size-specific prices, see our guides to the 2kW solar system price
- For businesses, see the commercial solar panel cost guide.
Conclusion
- Solar panel installation cost in India in 2026 isn’t one number.
- For a typical 3kW home system, it’s about ₹75,000 – ₹1 lakh for panels, ₹15,000–₹40,000 for the inverter, ₹9,000–₹42,000 for the structure, plus wiring, earthing, the net meter and labour, adding up to roughly ₹1.25–2.3 lakh before subsidy.
- Ask for an itemised quote, check that earthing and the net meter are included, and then subtract the subsidy you’re eligible for.
Want an itemised quote for your roof? Kondaas has helped homes and businesses across Tamil Nadu and Kerala go solar since 1995.
Talk to our team for a site visit and a line-by-line quote.
Frequently Asked Questions
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What is the cost of solar panel installation per kW in India in 2026?
For a typical home system, roughly ₹42,000–₹77,000 per kW installed before subsidy. That’s the 3kW range above divided by three. Smaller systems cost more per kW, and larger systems cost less.
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Is the net meter included in the installation cost?
Not always. Some installers include the net meter and DISCOM fees, and others list them separately. Ask for this in writing.
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Which part of a solar system costs the most?
The panels, usually followed by the inverter. The mounting structure can become the second-largest item if you choose an elevated design.
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Can I save money by buying panels myself?
It’s possible, but the installer may then not cover the panels under their workmanship warranty. For subsidised homes, the panels must be DCR and installed by a registered vendor, so check this before buying separately.
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Are there ongoing costs after installation?
Yes, but they’re small. Panels need regular cleaning, and the inverter usually needs replacing at least once during the panels’ 25+ year life. Some installers offer annual maintenance contracts.