4kW Solar System Price in India: Cost, Subsidy, and Benefits (2025)

What is a 4kW Solar System?

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.

Key Components of a 4kW Solar System

• Solar Panels: 10–12 panels (400W each) to produce 4kW of power.

• Solar Inverter: Converts DC to AC electricity for household use.

• Mounting Structures: Secure panels on rooftops or ground setups.

• Batteries (for off-grid/hybrid systems): Store energy for use during outages or nighttime.

• Accessories: Includes wiring, connectors, and net-metering equipment for on-grid systems.

4kW Solar System Price in India

The cost of a 4kW solar PV system depends on factors like system type, panel quality, inverter brand, and installation charges. Below is a detailed breakdown of the average cost of a 4kW solar panel system in India without subsidies:

System Type	Price Range	Battery Included
On-Grid Solar System	₹1,80,000–₹2,40,000	No
Off-Grid Solar System	₹2,80,000–₹3,60,000	Yes
Hybrid Solar System	₹3,20,000–₹4,00,000	Yes

Factors Influencing the Cost

• Panel Type: Monocrystalline panels (₹60–70/watt) offer higher efficiency but are pricier than polycrystalline panels (₹55–65/watt).

• Inverter Quality: Premium inverters from brands like Growatt or SMA cost ₹30,000–₹50,000.

• Battery Costs: For off-grid and hybrid systems, batteries (e.g., lithium-ion or lead-acid) add ₹80,000–₹1,50,000.

• Installation Charges: Labor and site-specific adjustments can add ₹10,000–₹20,000.

• Location: Costs vary across states like Gujarat, Maharashtra, or Tamil Nadu due to local taxes and labor rates.

• Brand: Trusted brands like Tata Solar, Waaree, or Adani may charge more for superior quality.

Example: A 4kW on-grid system with monocrystalline panels and a high-efficiency inverter might cost ₹2,20,000, while an off-grid system with batteries could reach ₹3,50,000. For comparison, check the 3kW solar system price or 5kW solar system price for other system sizes.

4kW Solar System Price in India with Subsidy

The Indian government’s PM Surya Ghar Muft Bijli Yojana offers subsidies to reduce the cost of solar systems for residential users. For a 4kW solar system, the subsidy significantly lowers the upfront investment, making it more affordable.

Subsidy Details

• Amount: Up to ₹78,000 for systems above 3kW (40% subsidy for the first 3kW and 20% for the additional 1kW).

• Eligible Systems: On-grid and hybrid systems installed by empanelled vendors qualify for subsidies. Off-grid systems are not eligible.

• Application Process: Register on the National Portal for Rooftop Solar or get assistance from your solar installer.

Price After Subsidy

System Type	Price Without Subsidy	Subsidy Amount	Price With Subsidy
On-Grid Solar System	₹1,80,000–₹2,40,000	₹78,000	₹1,02,000–₹1,62,000
Off-Grid Solar System	₹2,80,000–₹3,60,000	₹0	₹2,80,000–₹3,60,000
Hybrid Solar System	₹3,20,000–₹4,00,000	₹78,000	₹2,42,000–₹3,22,000

Example: A 4kW on-grid system costing ₹2,40,000 can be reduced to ₹1,62,000 after applying the ₹78,000 subsidy. A hybrid system originally priced at ₹3,50,000 may cost ₹2,72,000 post-subsidy. For more on subsidies, see the 2kW solar system subsidy details.

Source: PM Surya Ghar Yojana

How to Avail the Subsidy

1. Choose a certified solar vendor registered with the PM Surya Ghar Yojana.

2. Submit your application through the PM Surya Ghar portal with details like Aadhaar, electricity bill, and bank account.

3. After approval, the subsidy is disbursed directly to your bank account post-installation.

Types of 4kW Solar Systems

Choosing the right type of 4kW solar system is crucial based on your energy needs, location, and budget.

Here’s a detailed look at the three main types:

1. On-Grid Solar System

• Description: 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 cloudy days). Excess energy can be sold back to the grid via net metering.

• Price: ₹1,80,000–₹2,40,000 (₹1,02,000–₹1,62,000 with subsidy).

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

• Space Requirement: 320–400 sq. ft. of shadow-free rooftop space.

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

• Pros:

  • Most cost-effective option.

  • Earn credits through net metering for excess power.

  • Minimal maintenance (no batteries).

• Cons:

  • No power during grid outages.

  • Dependent on grid reliability.

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

  
  

2. Off-Grid Solar System

• Description: Operates independently of the grid, using batteries to store excess energy for use during nighttime or power outages. Ideal for remote or rural areas with unreliable electricity.

• Price: ₹2,80,000–₹3,60,000 (no subsidy available).

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

• Space Requirement: 320–400 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.

  • No reliance on the grid.

• Cons:

  • Higher cost due to batteries.

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

  • No subsidy eligibility.

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

  
  

3. Hybrid Solar System

• Description: Combines the benefits of on-grid and off-grid systems, offering grid connectivity and battery backup. You can use solar power, store excess energy, or draw from the grid as needed.

• Price: ₹3,20,000–₹4,00,000 (₹2,42,000–₹3,22,000 with subsidy).

• Components: Solar panels, hybrid inverter, batteries, mounting structure, 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.

Comparison of System Types

Feature	On-Grid	Off-Grid	Hybrid
Grid Dependency	Yes	No	Optional
Battery Backup	No	Yes	Yes
Subsidy Eligible	Yes	No	Yes
Maintenance	Low	High	Medium
Best for	Stable grid	Remote areas	Mixed needs

Benefits of Installing a 4kW Solar System

• 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.

Installation Guide for a 4kW Solar System

1. Site Assessment: A technician evaluates your rooftop for space and structural strength.

2. System Selection: Choose on-grid, off-grid, or hybrid based on your needs.

3. Subsidy Application: Apply via the PM Surya Ghar portal.

4. Installation: Completed in 2–5 days by certified installers.

5. Testing: Ensure the system works and connects to the grid (if applicable).

Appliances You Can Run on a 4kW Solar System

• Lights: 10–15 LED bulbs

• Fans: 5–7 ceiling fans

• Television: 1–2 units

• Refrigerator: 1 unit

• Air Conditioner: 1–1.5 ton

• Water Pump: Up to 1.5 HP

Note: Appliance usage depends on efficiency and operating hours.

Why Choose a 4kW Solar System?

• 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.

Tips to Maximize Your Solar Investment

• Opt for monocrystalline panels for better efficiency in limited space.

• Choose trusted brands like Tata Solar, Waaree, or Loom Solar.

• Clean panels every 2–3 months to maintain performance.

• Use a smart inverter to monitor energy production.

Frequently Asked Questions (FAQs)

What is the average cost of a 4kW solar system in India?

The average cost of a 4kW solar panel system in India ranges from ₹1,80,000 to ₹4,00,000, depending on the system type. On-grid systems cost ₹1,80,000–₹2,40,000, off-grid systems cost ₹2,80,000–₹3,60,000, and hybrid systems cost ₹3,20,000–₹4,00,000. Prices vary based on panel type, inverter quality, and installation charges.

How much subsidy is available for a 4kW solar system?

Under the PM Surya Ghar Muft Bijli Yojana, you can get a subsidy of up to ₹78,000 for a 4kW on-grid or hybrid solar system. Off-grid systems are not eligible for subsidies. Apply through the National Portal for Rooftop Solar. For other system sizes, check the 3kW solar system subsidy or 5kW solar system subsidy.

How many solar panels are required for a 4kW system?

A 4kW solar system typically requires 10–12 solar panels of 400W each, depending on the panel’s wattage and efficiency. You’ll need about 320–400 sq. ft. of shadow-free rooftop space for installation.

Can a 4kW solar system run an air conditioner?

Yes, a 4kW solar system can power a 1–1.5 ton air conditioner, along with other appliances like lights, fans, TVs, and refrigerators. The exact number of appliances depends on their efficiency and usage hours.

How long does it take to recover the cost of a 4kW solar system?

With subsidies and electricity bill savings, you can recover the cost of a 4kW solar system in 5–7 years. On-grid systems with net metering offer faster returns due to lower upfront costs and grid credits.

Conclusion

A 4kW solar system is a cost-effective and sustainable solution for Indian homes. With prices ranging from ₹1,02,000 (on-grid with subsidy) to ₹4,00,000 (hybrid without subsidy), it’s an investment that pays off through savings and government support. Explore options with trusted vendors like Loom Solar or Bhandari Solar to start saving today! For other system sizes, check out the 1kW solar system, 2kW solar system, 3kW solar system, or 5kW solar system.