Electricity bills are rising, and Delhi NCR faces frequent power cuts in peak summer. No wonder thousands of homes and businesses are shifting to rooftop solar systems in 2025.
But before you install, the most important question is:
How much will it cost? Let’s break it down with accurate estimates and real insights.
Rooftop Solar System Cost in Delhi NCR [2025 Updated]
| System Size | Avg. Cost (₹) | Suitable For |
| 1 kW | ₹60,000 – ₹75,000 | 1BHK or 2BHK homes |
| 3 kW | ₹1.6 – ₹2.1 lakhs | Medium households |
| 5 kW | ₹2.5 – ₹3.5 lakhs | Villas, large homes |
| 10 kW | ₹5.5 – ₹6.8 lakhs | Commercial buildings |
Note: These are rough estimates for on-grid solar systems. Prices include installation and GST but vary depending on solar panel quality, structure type, inverter brand, and wiring.
How to Reduce Rooftop Solar Cost in Delhi NCR
1. Apply for Government Subsidy
The MNRE (Ministry of New and Renewable Energy) is offering up to ₹78,000 subsidy in 2025 for residential rooftop solar.
- 1–3 kW: ₹14,588 per kW
- Above 3kW up to 10kW: ₹7,294 per kW
- Total subsidy for 3kW system: ₹43,764
You must install via an MNRE-registered vendor (like us at Sia Engineering).
2. Choose the Right System Type
- On-Grid (cheapest): Best for homes with stable power supply.
- Off-Grid (costlier): Includes battery backup.
- Hybrid: Smart but more expensive.
3. Use BIS-Certified Panels and Inverters
Lower maintenance and longer warranties reduce lifetime cost.
Learn more about solar panel lifespan and how to maximize solar panel efficiency with maintenance.
Real Experience: How We Installed a 5KW System in Noida
We recently installed a 5KW on-grid rooftop system for a client in Sector 137, Noida.
- Total Cost: ₹3.2 lakh
- Subsidy Availed: ₹51,000
- Final Cost: ₹2.69 lakh
- Payback Period: 3.5 years
- Electricity Bill: Reduced from ₹4,500/month to ₹450/month
“We were confused at first, but Sia Engineering gave us a clear cost estimate and managed everything – from subsidy paperwork to net metering.” – Mr. Arora, Noida
Factors That Affect Rooftop Solar Cost in Delhi NCR
- Type of Roof (Flat / Sloped)
- Shadow-Free Area Available
- Mounting Structure Type (Elevated or Flush)
- Cable Length & Wiring Quality
- Inverter Brand and Type
- Panel Efficiency & Warranty
Frequently Asked Questions
Q1. What is the payback period for rooftop solar in Delhi NCR?
A: Typically 3–5 years, depending on system size and your monthly electricity usage.
Q2. Can I get EMI or loan facility?
A: Yes. Banks like SBI and HDFC offer solar loans at low interest rates.
Q3. Is rooftop solar maintenance expensive?
A: Not at all. Just clean the panels once every 15 days and get annual service checkups. Learn more about solar service and maintenance.
Q4. Who is eligible for the subsidy in 2025?
A: Only residential users installing through MNRE-approved vendors.
Final Thoughts: Is Rooftop Solar Worth It in 2025?
Absolutely. If you live in Delhi, Noida, Ghaziabad, Gurgaon, or Faridabad, now is the best time to install rooftop solar and reduce your energy bills permanently.
You’ll:
- Save up to 90% on electricity bills
- Get government subsidy
- Increase your property value
- Reduce your carbon footprint
Curious about how solar stacks up against conventional power? Check out our comparison: Solar Power vs Conventional Power.
Also, here’s how to choose the right solar provider in India.
For installation cost breakdowns, see our blog: Cost of Solar Panel Installation in India.
Ready to Go Solar? Get a Free Cost Estimate
Call us at +91-99100 52488 or
Contact us for a free site visit and solar cost estimate in Delhi NCR.
Sia Engineering is an MNRE-registered vendor with 25+ years of experience, 150+ happy clients, and a 100% subsidy success rate.
