10kW Solar System Price in India 2026 — Cost, Subsidy, ROI for Large Homes & Shops

Introduction

A 10kW rooftop solar system sits at an interesting crossover point in India. It is too large for the average household and too small for a utility project — which makes it the default size for large independent houses running four or more air conditioners, and for neighbourhood shops, clinics, small offices and guest houses across Delhi NCR.

It is also the size where the economics change character. The central subsidy stops helping, but commercial tax benefits start to. This guide covers what a 10kW system costs in 2026, what you can and cannot claim, and how the return differs sharply depending on whether you install it as a homeowner or as a business.

10kW Solar System Price in India (2026)

Larger systems cost less per kilowatt, because the fixed costs of site survey, structure design, liaison and commissioning are spread over more capacity.

System Type	Price Range (before subsidy)	Per Watt
On-grid (no battery)	₹5,50,000 – ₹6,50,000	₹55 – ₹65
Hybrid (with 10 kWh battery)	₹8,00,000 – ₹9,80,000	₹80 – ₹98
Off-grid (battery-only)	₹8,80,000 – ₹11,00,000	₹88 – ₹110

A 10kW on-grid system typically uses 17–19 panels of 540–590 Wp, a three-phase string inverter, and a substantially heavier mounting structure than residential systems of half the size. Wind loading becomes a genuine engineering consideration at this scale, and it is the part of the quote most often under-specified by low-cost vendors.

Subsidy on a 10kW System — The Honest Position

Under PM Surya Ghar, central financial assistance for residential rooftop solar is capped at ₹78,000. A 10kW system receives the same ₹78,000 as a 3kW system. There is no additional central subsidy for the remaining seven kilowatts.

Benefit	Available on 10kW?	Amount
PM Surya Ghar central subsidy (residential)	Yes, capped	₹78,000
Delhi state capital subsidy	Yes, capped	₹30,000 (₹10,000/kW up to 3kW)
Delhi GBI (3–10 kW slab)	Yes	₹2.00 per unit, for 5 years
Central subsidy on commercial connections	No	Scheme is for residential consumers
Accelerated depreciation	Business consumers only	Claimed against taxable income

For a Delhi homeowner, the subsidy stack still brings ₹1,08,000 off the price, and the Generation Based Incentive at ₹2 per unit is meaningful at this scale — a 10kW system generating around 14,000 units a year earns roughly ₹28,000 annually in GBI for five years.

If the connection is commercial rather than domestic, PM Surya Ghar does not apply at all. Businesses instead rely on accelerated depreciation, GST input credit where eligible, and the fact that commercial tariffs are far higher than domestic ones — which usually produces a faster payback anyway.

Component-Wise Cost Breakdown

Component	Typical Cost	Notes
Solar modules (17–19 panels)	₹2,45,000 – ₹3,05,000	540–590 Wp; TOPCon increasingly standard
Three-phase inverter (10 kW)	₹70,000 – ₹1,15,000	String or dual-MPPT; the key reliability component
Mounting structure	₹75,000 – ₹1,20,000	Heavier gauge; wind-load design matters at this size
DC & AC cabling	₹32,000 – ₹48,000	Longer runs than residential systems
ACDB, DCDB, earthing, LA, SPD	₹28,000 – ₹42,000	Surge protection is essential at 10kW
Installation & commissioning	₹45,000 – ₹75,000	Crane/hoist access often required
Net meter & DISCOM liaison	₹15,000 – ₹28,000	Three-phase net meter, inspection, approvals

Generation and Savings

At roughly 4 units per kW per day in Delhi NCR, a 10kW system is a serious energy asset.

Metric	Estimate
Daily generation	36 – 42 units
Monthly generation	1,100 – 1,260 units
Annual generation	14,000 – 15,200 units
Annual saving at ₹8/unit (domestic)	₹1,12,000 – ₹1,21,600
Annual saving at ₹10/unit (commercial)	₹1,40,000 – ₹1,52,000

Payback Period and ROI

Scenario	Net Cost	Annual Saving	Simple Payback
Delhi home (central + state + GBI)	≈ ₹4,92,000	₹1,12,000 + ₹28,000 GBI	3.5 – 4 years
Gurgaon home (central only)	≈ ₹5,22,000	₹90,000 – ₹1,00,000	5.2 – 5.8 years
Commercial shop / office (no subsidy)	₹5,50,000 – ₹6,50,000	₹1,40,000 – ₹1,52,000	4 – 4.6 years

Commercial users should also factor in accelerated depreciation, which allows a substantial portion of the asset cost to be written off against taxable income in the early years. For a profitable business, this can compress the effective payback by a further six to twelve months. Confirm the current rate and eligibility with your chartered accountant, since depreciation rules are revised from time to time.

Requirements: Load, Phase and Roof Area

1. Sanctioned load: net-metered capacity is generally capped at 100% of sanctioned load across Delhi, Haryana and UP. A 10kW system requires at least a 10kW sanctioned connection.
2. Three-phase connection: effectively mandatory at this size. Single-phase connections are typically limited to around 5kW.
3. Roof area: allow roughly 900–1,000 sq ft of shadow-free space, or about 100 sq ft per kW.
4. Transformer capacity: DISCOMs limit the total rooftop solar connected to any one distribution transformer — commonly a percentage of the transformer rating. If your local transformer is already heavily loaded with solar, feasibility approval can be refused or the capacity reduced.
5. Structural check: 10kW of panels plus structure adds meaningful dead load and wind load to a roof. Older buildings should be assessed before installation.

Is 10kW Right for You?

• Large independent houses consuming 1,000–1,300 units a month, typically with four or more air conditioners.
• Retail shops, showrooms and clinics with daytime-heavy consumption — the best possible load profile for solar, since generation and demand coincide.
• Small offices, coaching centres and guest houses in Delhi and Gurgaon.
• Housing societies looking at common-area loads — though RWAs are covered by a separate central rate of ₹18,000 per kW for common facilities, with its own caps.

If your consumption is below 700 units a month, a 10kW system will export a large share of its output and settle at a lower value than you paid for it. Size to consumption, not to available roof.

10kW Solar in Delhi and Gurgaon

Delhi’s combination of a state capital subsidy, a five-year Generation Based Incentive and the highest domestic tariffs in NCR makes it the strongest 10kW market in the region. Gurgaon and Faridabad have lower domestic tariffs under DHBVN, which lengthens residential payback — but commercial and industrial tariffs in Haryana are high enough that shops and small factories often see better returns than Delhi homes.

In Noida and Ghaziabad, UPPCL applies a fixed charge per kW of sanctioned load in addition to per-unit rates, so a rooftop system reduces the energy component of your bill but not the fixed component. Factor that in when estimating savings.

Conclusion

A 10kW solar system costs ₹5.5–₹6.5 lakh before subsidy in 2026 and generates 14,000–15,200 units a year in Delhi NCR. Residential users receive a capped ₹78,000 central subsidy plus, in Delhi, ₹30,000 state subsidy and a five-year GBI — bringing payback to three and a half to four years. Commercial users get no subsidy but benefit from higher tariffs and accelerated depreciation, landing in a similar four-to-five-year range.

At this size, the difference between a good installation and a cheap one is measured in decades of output. Prioritise the inverter, the mounting structure and the surge protection over the headline price.

Get a Free Quote from Solar Squad

Solar Squad designs and installs 10kW rooftop solar systems for large homes, shops and small commercial premises across Delhi and Gurgaon — including structural assessment, three-phase net metering and complete DISCOM liaison. Contact us for a free site survey and a detailed 10kW proposal built around your actual load profile.

Official Sources and Further Reading

Subsidy amounts, tariffs and net metering rules are revised from time to time. These are the primary sources this guide is based on — always confirm current figures on the official portal before you sign a contract.

• PM Surya Ghar Muft Bijli Yojana — official national portal
• Delhi Solar Portal — state subsidy and Generation Based Incentive rates
• Dakshin Haryana Bijli Vitran Nigam (DHBVN)
• MNRE — Approved List of Models and Manufacturers (ALMM)

FAQs

What is the cost of a 10kW solar system in India in 2026?

An on-grid 10kW system costs ₹5.5–₹6.5 lakh before subsidy, roughly ₹55–₹65 per watt. Hybrid systems with a 10 kWh battery run ₹8–₹9.8 lakh.

How much subsidy is available on a 10kW solar system?

For residential connections, the PM Surya Ghar central subsidy is capped at ₹78,000 no matter how large the system. Delhi adds up to ₹30,000 state subsidy. Commercial connections are not covered by the scheme.

How many units does a 10kW solar system generate?

Around 36–42 units per day in Delhi NCR, or 14,000–15,200 units a year, on a shadow-free roof with regular cleaning.

How much roof area is needed for a 10kW solar system?

Approximately 900–1,000 sq ft of shadow-free area, using 17–19 panels of 540–590 Wp.

Do I need a three-phase connection for 10kW solar?

Yes, in almost all cases. Single-phase connections are generally limited to around 5kW, so a 10kW system requires a three-phase connection with a sanctioned load of at least 10kW.