Solar Rooftop System Price in India (2025): Cost, Subsidy & Installation Guide
Solar energy is one of the fastest-growing energy solutions in India. With the government’s focus on renewable energy and rising electricity bills, installing a solar rooftop system has become a smart choice for both homes and businesses.
In this blog, we will cover the price of solar rooftop systems in India (2025), government subsidy details, installation process, and why it is worth investing in solar power today.
✅ What is a Solar Rooftop System?
A solar rooftop system is a set of solar panels installed on the rooftop of a home, office, or building to generate electricity using sunlight.
There are mainly three types of rooftop systems in India:
- On-Grid Solar System – Connected to the electricity grid, with net metering. Most common & affordable.
- Off-Grid Solar System – Works with batteries, useful in remote areas without grid supply.
- Hybrid Solar System – Combination of grid + battery backup.
💰 Solar Rooftop System Price in India (2025)
The price of a rooftop solar system depends on its capacity (kW), type, and brand. Below is the approximate cost in 2025:
| Capacity | Price (₹) – On-Grid | Price (₹) – Hybrid (with battery) |
|---|---|---|
| 1 kW | ₹60,000 – ₹70,000 | ₹1,00,000 – ₹1,20,000 |
| 3 kW | ₹1,80,000 – ₹2,10,000 | ₹3,00,000 – ₹3,60,000 |
| 5 kW | ₹3,00,000 – ₹3,50,000 | ₹5,00,000 – ₹6,00,000 |
| 10 kW | ₹6,00,000 – ₹7,00,000 | ₹10,00,000 – ₹12,00,000 |
👉 For homes, systems between 3 kW – 10 kW are most common.
👉 For businesses, systems above 20 kW – 200 kW are installed.
🏦 Solar Rooftop Subsidy in India (2025)
The Indian government is promoting solar through the PM Surya Ghar: Muft Bijli Yojana (2024-25).
Residential Subsidy Slabs (2025):
- Up to 2 kW → ₹30,000 per kW
- 3 kW to 10 kW → ₹18,000 per kW (for additional capacity)
- Above 10 kW → No subsidy
👉 Maximum subsidy = ₹78,000 for a 10 kW rooftop solar system.
⚠️ Note: Subsidy is only available for residential rooftop systems. Commercial & industrial users don’t get direct subsidies, but they can claim tax benefits, accelerated depreciation (40%), and net metering savings.
⚡ Electricity Generation from Rooftop Solar
- 1 kW solar system → Generates 4 units/day (120 units/month)
- 3 kW solar system → 12 units/day (360 units/month)
- 5 kW solar system → 20 units/day (600 units/month)
- 10 kW solar system → 40 units/day (1,200 units/month)
This directly reduces your electricity bill. For example, a 5 kW system can save around ₹4,000 – ₹5,000 per month.
🛠 Installation Guide for Rooftop Solar System
Step 1 – Site Survey
A professional visits your home/office to check roof space, direction, and sunlight availability.
Step 2 – System Design
Deciding the system size (kW), panel type (Mono PERC/Bifacial), inverter, and structure.
Step 3 – Subsidy Application
Apply through the National Rooftop Solar Portal (for residential subsidy).
Step 4 – Installation
Solar panels, inverters, wiring, and net meter are installed. Takes 3–7 days depending on system size.
Step 5 – Inspection & Commissioning
DISCOM inspects the system and connects it to the grid (for net metering).
🔧 Specifications of Rooftop Solar Systems
- Lifespan: 25 years (panels), 8–10 years (inverters)
- Space required: 100 sq. ft. per kW
- Warranty: 10–12 years (panels), 5 years (inverter)
- Efficiency: 18–22% (depends on panel quality)
🌞 Benefits of Rooftop Solar
- Saves up to 70–90% on electricity bills
- Low maintenance – only periodic cleaning required
- Government subsidy for residential users
- Eco-friendly – reduces carbon footprint
- Increases property value
- One-time investment, 25 years of savings
📌 Is Installing a Rooftop Solar System Worth It in 2025?
Yes! With rising power tariffs and government subsidy support, rooftop solar is one of the best investments in 2025. Whether you are a homeowner or a business owner, solar energy ensures huge savings, long-term benefits, and green energy for the future.
📝 Conclusion
A solar rooftop system is not just about saving money – it is about securing a sustainable and reliable source of energy for the next 25 years. In 2025, with government subsidies and advanced solar technology, now is the perfect time to switch to rooftop solar in India.
📌 FAQs on Solar Rooftop System in India (2025)
Q1. How much does a solar rooftop system cost in India in 2025?
A 1 kW on-grid system costs around ₹60,000 – ₹70,000, while a 5 kW system costs ₹3–3.5 lakh. Prices depend on system size, type, and brand.
Q2. How much subsidy is available for rooftop solar in 2025?
Under PM Surya Ghar Muft Bijli Yojana, you can get up to ₹78,000 subsidy for residential rooftop systems up to 10 kW.
Q3. How many units does a 1 kW solar rooftop system generate?
A 1 kW system generates around 120 units per month (4 units per day on average).
Q4. Is subsidy available for commercial and industrial rooftop solar systems?
No, subsidy is only for residential consumers. But C&I users can avail tax benefits, net metering, and depreciation benefits.
Q5. How much space is required for installing a rooftop solar system?
On average, you need 100 sq. ft. per kW of shadow-free rooftop space.
Q6. What is the lifespan of rooftop solar panels?
Solar panels last 25 years or more, while inverters last around 8–10 years.
Q7. How long does it take to install a rooftop solar system?
A small (1–5 kW) system can be installed in 3–5 days, while larger systems may take 1–2 weeks.
Q8. How much money can I save with rooftop solar?
Savings depend on your system size. For example, a 5 kW rooftop solar system can save around ₹50,000 – ₹60,000 per year on electricity bills.