3kW Solar System Price in India 2026: Cost, Subsidy & Output

The 3 kilowatt solar panel price is the most searched system size in India, and for good reason. A 3kW system fits the roof and electricity bill of most 2 to 3 BHK homes, runs an AC along with the usual fans and lights, and qualifies for the maximum PM Surya Ghar government subsidy.

This guide gives you the full picture: what a 3kW system costs before and after subsidy, what exactly you are paying for, how many units it will produce each day, what appliances it can handle, how much roof space you need, and why panel technology changes the math. For the broader pricing picture across all system sizes (1kW to 10kW), see our solar panel price in India guide.

How much does a 3kW solar system cost in India?

A complete 3kW on-grid solar system in India, including panels, inverter, mounting structure, cabling, earthing and installation, indicatively costs between ₹1,80,000 and ₹2,10,000 before subsidy in 2026.

That is the all-in number. Many websites quote only the panel cost, which is misleading because the panels are roughly 50 to 55 percent of the total system cost. The rest goes to the inverter, the mounting structure, DC and AC wiring, and installation labour.

After applying the PM Surya Ghar subsidy (covered below), the net out-of-pocket cost for a residential 3kW system drops to approximately ₹1,00,000 to ₹1,20,000. That is the number most Indian homeowners actually pay.

3kW solar panel price Before PM Surya Ghar subsidy

Component	Indicative cost	Notes
Solar panels (6 x 500 to 540Wp)	₹65,000 to ₹80,000	Largest chunk; varies with technology (PERC vs TOPCon)
Grid-tied inverter (3kW)	₹30,000 to ₹40,000	Converts DC to AC; matched to panel wattage
Mounting structure	₹15,000 to ₹20,000	GI or aluminium; depends on roof type
Wiring, connectors, earthing	₹10,000 to ₹15,000	DC cables, AC cables, MC4 connectors, earthing kit
Installation labour	₹8,000 to ₹12,000	Includes testing and commissioning
Net metering application	₹2,000 to ₹5,000	DISCOM fees vary by state
Total (before subsidy)	₹1,80,000 to ₹2,10,000

Two things affect this range more than anything else. The first is panel technology. N-Type TOPCon modules cost a few rupees more per watt than standard Mono PERC panels, but they produce more electricity from the same roof for 25 to 30 years (we explain why in the TOPCon section below). The second is your roof type, because a flat RCC terrace needs a tilt structure that costs more than a simple rail on a tin shed.

3kW solar panel price after PM Surya Ghar subsidy

The PM Surya Ghar Muft Bijli Yojana gives residential rooftop solar the biggest price cut in its history. For a 3kW system, the math works like this:

	Amount	How it works
System cost (before subsidy)	₹1,80,000 to ₹2,10,000	Paid to the installer upfront
Central subsidy	₹78,000	Credited directly to your bank account after commissioning and inspection
Net cost to homeowner	₹1,00,000 to ₹1,20,000	Your actual out-of-pocket expense

Three conditions must be met to get this subsidy. First, the installation must be residential (not commercial). Second, you must use ALMM listed solar modules from the MNRE approved list. Third, the installation must be done through a vendor registered on the official PM Surya Ghar portal at pmsuryaghar.gov.in

State-level top-up subsidies also exist in some states. Gujarat, Maharashtra, Rajasthan, Odisha, and Uttar Pradesh each have their own additional incentives or DISCOM-specific benefits that can reduce the net cost further. Our PM Surya Ghar Yojana subsidy guide covers the full eligibility rules and application steps.

How many units does a 3kW system produce per day?

A 3kW solar system in India produces roughly 12 to 15 units (kWh) of electricity per day on average, depending on your location and the season. That translates to about 360 to 450 units per month.

Here is how the numbers look across different conditions:

Condition	Daily output	Monthly output
Peak summer (5+ sun hours)	14 to 15 units	420 to 450 units
Average (4 to 4.5 sun hours)	12 to 13 units	360 to 390 units
Monsoon / winter (3 to 3.5 sun hours)	9 to 11 units	270 to 330 units

States like Rajasthan, Gujarat, and Madhya Pradesh average higher because they get more peak sun hours (5 to 5.5). States in the northeast or coastal monsoon zones sit closer to the lower end.

Panel technology also matters here: N-Type TOPCon modules have better weak-illumination response, which means they generate more during cloudy mornings, overcast monsoon days, and late evenings compared to standard panels.

What can a 3kW solar system run?

A 3kW system can handle the load of a typical 2 to 3 BHK Indian home. Here is a realistic appliance chart:

Appliance	Wattage	Quantity	Total watts
LED lights	10W each	10	100W
Ceiling fans	50W each	4	200W
Refrigerator	150W	1	150W
Television	80W	1	80W
Washing machine	500W	1	500W
AC (1 to 1.5 ton inverter)	1,200W	2	2,400W
Laptop / router / phone chargers	100W		100W
Total simultaneous load			~3,530W

Roof space needed for a 3kW system

The area required for a 3kW solar panel installation is about 250 to 300 square feet of shadow-free roof space, roughly the size of a large bedroom.

If you use higher-wattage panels (540Wp to 580Wp), you need only 5 to 6 panels, which brings the footprint closer to 220 to 250 sq ft. Lower-wattage panels (400Wp) need 7 to 8 panels and more area. The 3 kilowatt solar panel size also depends on whether you mount at a tilt (flat roofs) or flush (tin sheds), because tilted panels need row spacing to avoid self-shading.

If roof space is tight, choosing a high-efficiency module like a 580Wp or 600Wp N-Type TOPCon panel is the fastest way to fit more power into less area.

On-grid vs off-grid: which 3kW system is right for you?

	On-grid (grid-tied)	Off-grid (with battery)
Cost	₹1,80,000 to ₹2,10,000	₹2,50,000 to ₹3,50,000 (battery adds ₹70,000 to ₹1,40,000)
Subsidy eligible?	Yes (PM Surya Ghar)	No (subsidy is for grid-connected only)
Power during outage?	No (shuts off for safety)	Yes (battery backup)
Best for	Most homes with stable grid	Areas with 4+ hours daily power cuts
Net metering?	Yes, export surplus and earn credits	No grid connection

For the majority of Indian homes that have reliable grid supply, the on-grid system wins. It is cheaper, qualifies for the full subsidy, and net metering lets you export surplus generation to offset your evening bill. Off-grid only makes sense if you face very long or very frequent power cuts. Hybrid systems (on-grid plus a small battery) are a middle ground but cost significantly more.

For a deeper look at panel types and how to choose, see our types of solar panels guide and solar panel warranty guide.

Why TOPCon panels give you more from a 3kW system

The same 3kW system produces different amounts of electricity depending on which panels you use. Here is why N-Type TOPCon modules outperform standard Mono PERC in a 3kW setup:

1. Higher efficiency (up to 23.51% on Atal Solar's G12R 132 Series means fewer panels needed for the same 3kW, saving roof space and structure cost.
2. Better generation in weak light, so you lose less output during cloudy days, monsoon weeks, and winter mornings. This is a real difference in states like Kerala, West Bengal, and the northeast.
3. Zero first-year light-induced degradation (LID). Standard P-Type panels lose 2 to 3% output in the first year; TOPCon modules do not.
4. Lower long-term degradation means higher lifetime generation and a lower cost per unit of electricity (LCOE) over 25 to 30 years.

The upfront cost difference between a 3kW Mono PERC and a 3kW N-Type TOPCon system is typically ₹10,000 to ₹18,000. Over the 25-year life of the system, that gap pays for itself many times over through higher generation. For the full comparison, read our N-Type vs P-Type solar panels guide, or check the current TOPCon solar panel price in India.

How to get the best 3kW solar price (step by step)

1. Check your last 3 to 6 electricity bills and note your average monthly consumption in units.
2. Confirm your shadow-free roof area between 9 AM and 4 PM. You need roughly 250 to 300 sq ft for 3kW.
3. Register on the PM Surya Ghar portal at pmsuryaghar.gov.in to check eligibility and find portal-registered vendors.
4. Run the numbers on our free Solar Calculator to get a tailored system size and savings estimate.
5. WhatsApp us at +91 90990 88489 for an exact quote on N-Type TOPCon modules manufactured at our fully automated plant in Rajkot, Gujarat, with AI and AOI integrated robotic inspection on every panel. Or you can request a quote directly and our team will get back to you within 24 hours.

Frequently asked questions

How much does a 3kW solar system cost in India in 2026?

A complete 3kW on-grid system costs approximately ₹1,80,000 to ₹2,10,000 before subsidy. After the ₹78,000 PM Surya Ghar subsidy, the net cost is roughly ₹1,00,000 to ₹1,20,000 for residential installations. Figures as of August 2026.

How many units does a 3kW solar panel produce per day?

A 3kW system generates roughly 12 to 15 units (kWh) per day on average, depending on location and season. That is about 360 to 450 units per month. States with more sun hours (Rajasthan, Gujarat) produce closer to the upper end.

Is a 3kW solar system enough for a home?

Yes, for most 2 to 3 BHK Indian homes. A 3kW system can run 10 LED lights, 4 fans, 1 fridge, 1 TV, 1 washing machine, and 2 inverter AC simultaneously. It covers 80 to 100% of typical daytime consumption.

Can a 3kW solar system run an AC?

Yes, a 3kW system can run one 1 to 1.5 ton inverter AC along with other household appliances. It cannot run two ACs at the same time because the combined load would exceed the 3kW inverter capacity.

What is the PM Surya Ghar subsidy for a 3kW system?

The central government subsidy for a 3kW or larger residential rooftop system is ₹78,000 (capped). This amount is credited to your bank account after installation, commissioning, and inspection. Only ALMM listed panels installed by portal-registered vendors qualify.

How much roof space do I need for a 3kW solar system?

You need about 250 to 300 sq ft of shadow-free roof space, roughly the size of a large bedroom. Using higher-wattage panels (540Wp+) reduces the number of panels and the area needed.

What is the payback period for a 3kW solar system?

With the subsidy, most homeowners recover their investment in 3 to 4 years through monthly electricity savings. After that, the electricity is essentially free for the remaining 20+ years of the system's life.