3 kW Rooftop Solar System for Home in India – Cost, Subsidy & ROI
A 3 kW rooftop solar system for home is one of the most popular choices for medium-sized households in India. It can run everyday appliances such as fans, lights, TVs, laptops, refrigerators, washing machines, and even a 1.5-ton AC, making it a reliable option for families with monthly power consumption of 350–450 units.
Synergy Solar is a MNRE-approved EPC company, installer, and supplier of residential rooftop solar systems. We provide end-to-end solutions — from design, subsidy application, and net metering to installation and after-sales service — so that homeowners enjoy a hassle-free solar experience.
Cost of a 3 kW Rooftop Solar System
The 3 kW solar rooftop plant cost depends on system type (on-grid, off-grid, hybrid), location, and installation complexity.
|
System Type |
Approx. Cost (₹) |
Suitable For |
| On-Grid (No Battery) | 1,20,000 – 1,50,000 | Homes with reliable grid supply & net metering |
| Off-Grid (With Battery) | 1,60,000 – 1,80,000 | Homes facing frequent power cuts |
| Hybrid (Grid + Battery) | 1,70,000 – 2,00,000 | Families that want both grid savings + backup Homes needing reliability + net metering |
The 3 kW rooftop solar system for home cost reduces significantly after applying government subsidy.
Energy Generation & Benefits
1. A 3 kW rooftop solar system for home generates:
- 12–15 units per day
- 4,200–5,400 units annually
2, Annual Savings: ₹30,000 – ₹40,000 (at tariff ₹7–₹8/unit)
3. Carbon Reduction: 4–5 tons CO₂ per year (equal to 200 trees planted)
Key Benefits
- Cuts electricity bills by up to 70%
- Provides energy independence with net metering and battery options
- Boosts property value with a modern green energy system
- Requires minimal maintenance (panel cleaning + annual check)
These are the proven 3 kW rooftop solar system benefits for home that make it one of the best mid-range options.
Technical Specifications of 3 kW Rooftop Solar System
| Component | Specification |
| System Size | 3,000 Wp |
| Solar Panels | 8–10 panels (330–400 W each) |
| Inverter | 3 kW on-grid / hybrid |
| Daily Output | 12–15 units |
| Annual Output | 4,200–5,400 units |
| Roof Area | 250–350 sq. ft |
| Lifespan | Panels: 25+ years |
Government Subsidy for 3 kW Rooftop Solar
The PM Surya Ghar: Muft Bijli Yojana offers generous support for households.
- 3 kW rooftop solar subsidy amount India: ~₹78,000
- Net Cost (after subsidy): 70,000 – 80,000 (on-grid system)
With subsidy, the 3 kW home rooftop solar system price in India becomes highly affordable, ensuring a 3–4 year payback period.
Installation & Roof Space Requirements
A proper setup ensures maximum efficiency of your system.
- Roof Area Required for 3 kW Rooftop Solar System: ~250–350 sq. ft shadow-free area
- Orientation: South-facing with optimal tilt angle (latitude of location)
- Roof Types: RCC, metal sheet, or tiled roofs (with appropriate mounting)
- 3 kW Rooftop Solar Installation Cost Residential: ~₹20,000 – 25,000 (mounting, wiring, earthing, labour)
Payback Period & ROI
- Investment (post subsidy): ₹70,000 – ₹80,000
- Annual Savings: ₹30,000 – ₹40,000
- Payback Period of 3 kW Rooftop Solar Home: 3–4 years
- ROI: 6–8× return over 25 years
Once the system pays for itself, you enjoy 20+ years of free electricity.
Why Choose Synergy Solar?
At Synergy Solar, we combine expertise with trust to deliver reliable home solar solutions:
MNRE-approved EPC installer & supplier of rooftop solar systems
BIS-certified panels & inverters with long warranties
1000+ successful residential solar installations across India
Transparent pricing and full after-sales support
Subsidy & net metering assistance handled by our team
With Synergy Solar, your home rooftop solar project is managed by experts who ensure maximum savings and long-term reliability.
FAQs on 3 kW Rooftop Solar System for Home
What is the cost of a 3 kW rooftop solar system for home in India?
The 3 kW home rooftop solar system price in India is around ₹1,20,000 – ₹2,00,000 depending on type (on-grid, off-grid, hybrid). With subsidy, the 3 kW rooftop solar system for home cost reduces to about ₹70,000 – ₹80,000.
How much roof area is required for a 3 kW rooftop solar system?
The roof area required for 3 kW rooftop solar system is approximately 250–350 sq. ft of shadow-free space, suitable for most medium-sized residential rooftops.
How many units can a 3 kW solar rooftop system generate daily?
A 3 kW solar rooftop plant generates around 12–15 units per day, equal to 4,200–5,400 units annually, depending on sunlight and location.
What subsidy is available for a 3 kW rooftop solar system in India?
Under the PM Surya Ghar: Muft Bijli Yojana, the 3 kW rooftop solar subsidy amount India is about ₹78,000, making the system highly affordable for homeowners.
What is the payback period of a 3 kW rooftop solar home system?
The payback period of 3 kW rooftop solar home installations is 3–4 years, after which families enjoy more than 20 years of free electricity.