4 kW Solar System Price & Subsidy in India: 2025

A 4kW solar system generates around 16 units of electricity daily, equating to approximately 480 units per month or 5,760 units annually under optimal conditions. It suits medium-sized households with 4–6 members or homes consuming 450–500 units of electricity monthly. This system can power appliances like lights, fans, TVs, refrigerators, and even a 1.5 HP water pump. For smaller or larger households, explore options like a 1kW solar system, 2kW solar system, 3kW solar system, or 5kW solar system to match your energy needs.

Our post contains everything you need to know about a 4 kW solar system—its price, the subsidy, and, most importantly, whether it will be the right fit for you or not! Let's find out!

4kW Solar System Price List in India

The standard cost of installing a 4 kW solar system throughout India starts at ₹2.5 lakh and reaches up to ₹ 5.2 lakh. The pricing of solar systems depends on their configuration between grid-tied, off-grid and hybrid systems and the quality standard of their components.

Model	4 kW Solar System Price
4 kW on-grid solar system	Rs.2,52,000
4 kW off-grid solar system	Rs.2,80,000
4 kW hybrid solar system	Rs.5,24,000

While most homeowners in India prefer on-grid systems for their flexibility and high return on investment, there is a fair share of market demand for off-grid systems as well. The choice ultimately depends on the customer's specific needs and budget.

• The 4 kW solar system prices mentioned above can vary as per location, promotions, brand, and availability.

• The prices are also exclusive of the government subsidy. The eligibility to avail a subsidy depends on various factors, including the state regulations and the type of solar system.

• For any questions regarding the solar 4 kW price across states, our team at greenpages can help you.

Government Subsidies for 4kW Solar Systems in India

The Indian government provides financial support to foster home-based solar power systems. Following are the details of the 4 kW Solar System subsidy in India: 

Solar System Capacity	Applicable Subsidy (₹)
1 kW	40,000/-
2 kW	60,000/-
3 kW and Above	78,000/-*
Resident Welfare Associations (RWA) and Group Housing Societies (GHS)	Rs. 78,000/- for common facilities up to 500 kWp @ 10 kWp per house, with the upper limit being inclusive of individual rooftop plants already installed by individual residents in that GHS/RWA at the time of installation of RTS for common activity.
Note: *The subsidy amount is fixed for rooftop solar systems of 4 kW and above capacity.

• Systems running up to 2 kW get an Rs. 40,000 subsidy per kW. 

• Systems running up to an additional capacity of 3 kW get Rs. 18,000 per kW. 

• For all solar systems larger than 3 kW, get a fixed Rs. 78,000 subsidy. 

• For group house societies and resident welfare associations, the subsidy is set at Rs. 18,000 per kW. (includes common facilities; 500 kW capacity where each house gets 3 kW; EV charging)

Note: For detailed information, please refer to the scheme guidelines.

4kW Solar System Price in India with Subsidy

Here are the CFA calculations for 4000-watt solar panel prices in India. To find out the accurate cost of solar for your home or office, you are advised to connect with a trusted solar company.

Model	4Price	Subsidy Applicable	Prices After Subsidy
4 kW on-grid solar system	Rs. 2,52,000	Rs. 78,000	Rs. 1,74,000
4 kW off-grid solar system	Rs. 2,80,000	Not applicable	No change
4 kW Hybrid solar system	Rs. 5,24,000	Rs. 78,000	Rs. 4,46,000

Note: Note that the subsidy amount calculation doesn’t include the cost of solar batteries and is fixed for each kW across different system capacity ranges

4kW Solar System Specifications

The following specifications describe a 4 kW solar panel system in India.

Particulars	Description
Solar Panel	550 watts
No. of Module	8 Nos.
Type of Solar Panel	Mono/Poly
Efficiency	Up to 20%
Warranty	25 Years
Charge Controller	70V
Technology	MPPT
SPVmax (Voc)	49V to 52V per panel
Operating Range	30V–1000V DC
Efficiency Rate	97%–98.5%
Switching Device	IGBT
Ingress Protection	IP65 for inverte
Operation Temperature	-10°C to +60°C
Solar Accessories	Yes
Mounting Structure	4kW Standard Structure
DC Junction Box	1 Unit
DC Cable	4mm² or 6mm² Copper Solar
AC Cable	3-core armored copper cable
MC4 Connectors	Standard MC4 compatible
Other Accessories	Fasteners, Cable Tie, Crimping Tool, Earthing Kit, Lighting Arrestor
Space Required	300–350 sq. ft

Is a 4kW Solar System Right for You?

If you are planning to add a 4-kilowatt solar panel system to your home, here are some important facts that would interest you.

• Save Money: Reduce electricity bills by up to 90% with net metering.

• Eco-Friendly: Lower your carbon footprint with clean energy.

• Long-Lasting: Panels last 25–30 years with minimal maintenance.

• Power Backup: Off-grid and hybrid systems ensure power during outages.

• Quick ROI: Recover your investment in 5–7 years with subsidies and savings.

• Perfect for Medium Homes: Meets the energy needs of families with moderate consumption.

• Affordable: Balances cost and capacity, especially with subsidies.

• Scalable: Add more panels or batteries later if needed. For smaller systems, explore the 1kW solar system or 2kW solar system.

• Government Support: Subsidies reduce costs significantly.

Types of 4kW Home Solar System

If you have already begun looking into solar photovoltaic (PV) system options for your home, you've likely noticed that not all 4kW solar systems look or function the same. There are three types of home solar system options. Apart from the aesthetics, every home solar plant varies in price, capabilities, solar energy output, and overall efficiency levels. Hence, picking the right one requires careful consideration of your home's electricity needs and budget against the characteristics of different solar PV modules.

There are three main types of home solar systems:

• On-Grid Solar System (offers long-term savings and the flexibility of grid connections)

• Off-Grid Solar System (offers long-term savings and battery backup to prevent power outages)

• Hybrid Solar System (offers the best of off-grid and on-grid solar energy systems)

4KW on Grid Solar System 

Connects directly to the utility grid, allowing you to use solar power during the day and grid electricity when solar production is low (e.g., at night or on cloudy days). Excess energy can be sold back to the grid via net metering.

• Price: ₹2,52,000 (₹1,74,000 with subsidy).

• Components: Solar panels, on-grid inverter, mounting structure, and net-metering equipment.

• Space Requirement: 300–350 sq. ft. of shadow-free rooftop space.

• Best For: Urban homes with reliable grid supply and low outage frequency.

• Pros:

  • This is the most cost-effective option available.

  • Earn credits through net metering for excess power.

  • Minimal maintenance (no batteries).

• Cons:

  • The device loses power during grid outages.

  • The system is reliant on the reliability of the grid.

• Ideal Use Case: Households in cities like Delhi, Mumbai, or Bangalore with stable electricity and a desire to reduce bills.

 4KW off-grid Solar System

The system operates independently of the grid, utilizing batteries to store excess energy for use during nighttime or power outages. This system is particularly suitable for remote or rural areas where electricity is not reliable.

• Price: ₹2,80,000 (no subsidy available).

• Components: Solar panels, off-grid inverter, batteries (lead-acid or lithium-ion), and mounting structure.

• Space Requirement: 300–350 sq. ft. for panels, plus space for battery storage.

• Best For: Rural homes or areas with frequent power cuts, like parts of Uttar Pradesh or Bihar.

• Pros:

  • Complete energy independence.

  • Reliable power during outages.

  • There is no dependence on the grid.

• Cons:

  • The higher cost is attributed to the need for batteries.

  • Batteries require maintenance and replacement every 5–10 years.

  • There is no eligibility for subsidies.

• Ideal Use Case: Homes in remote areas or regions with unreliable grid supply, needing consistent power for essential appliances.

4KW Hybrid Solar System

This system combines the benefits of both on-grid and off-grid systems by providing grid connectivity along with battery backup. You can use solar power, store excess energy, or draw from the grid as needed.

• Price: ₹5,24,000(₹4,46,000 with subsidy).

• Components: Solar panels, hybrid inverter, batteries, mounting structure, and net-metering equipment.

• Space Requirement: 320–400 sq. ft. for panels, plus battery storage space.

• Best For: Homes in semi-urban areas with occasional outages, seeking flexibility and backup.

• Pros:

  • Backup power during outages.

  • Net metering benefits for excess energy.

  • Flexible energy usage (solar, battery, or grid).

• Cons:

  • Highest upfront cost.

  • Battery maintenance required.

• Ideal Use Case: Households in areas like Pune or Hyderabad, where power cuts are occasional but grid connectivity is available for net metering.

Conclusion

Investing in a 4 kW solar panel in India can be your ideal choice. If you have a medium home with 4-5 rooms and want to save on electricity bills, this is a sign that you should buy a 4 kW solar panel for your home. For more information, you can contact us at Green Pages India to determine your ideal solar panel according to your usage and bills.

FAQs About 4 kW Solar System

What is the total lifespan of a 4 kW solar system? 

You will be shocked to know that to break even, the 4 kW solar panel system will take around 25 years or more.

What is the number of appliances that i can run on a 4 kW solar panel system? 

To your joy, you can run all your essential household items like lights, fans, a refrigerator, a television, and a washing machine on a 4 kW solar system. It can also power a laptop, an iron press, and a small AC as well! 

How many solar panels are required to set up a 4 kW solar system? 

You will need around 10 solar panels to set up a 4 kW solar panel system for your home. But remember, the more wattage your individual panel has, the less you require them. 

How much space do i need to set up a 4 kW solar system? 

To set up a 4 kW solar system, you will need around 350sq. feet of shadow-free area. 

What type of maintenance is required for a 4 kW solar system?

To maintain your 4 kW solar system, all you need to do is clean your panels every 2 to 4 weeks and do an annual check-up of your solar and monitoring systems.

Do I need batteries for a 4 kW solar system?

It totally depends on the type of solar system you are installing. For example, an on-grid solar system does not require any batteries, while an off-grid solar system requires power sources.