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The cost of solar installation has become increasingly affordable, making it a desirable investment for those seeking to lower their electricity expenses and reduce their environmental impact.
A 15 kW rooftop solar panel system is a great option for large families, small businesses, or 15-apartment housing societies with high energy needs.
For areas with good sunlight exposure, a system of this size can generate approximately 19,000 to 20,000 units of electricity each year. This amount of power is enough to run essential household appliances, larger equipment and air conditioning units.
If the 15kW rooftop solar is installed for a small housing society, it can easily power the common area appliances while ensuring you save at least 90% on your electricity bills.
Additionally, government subsidies and improved financing options can reduce the initial installation cost and provide faster returns on investment.
Read further to learn about the 15 kW Solar System Price in India, including installation and subsidy, ways to fund your 15 kW on-grid solar system and how to choose the right rooftop solar system for your home.
15 kW Solar System Price in 2025 in India with installation
The table below includes the price of rooftop solar panels with installation in major states.
| State | Price Range for 15 kW Solar (in Rupees) |
| Maharashtra | 7,26,000 – 8,85,000 |
| Madhya Pradesh | 7,95,000 – 8,95,000 |
| Uttar Pradesh | 7,90,000 – 8,70,000 |
| Rajasthan | 8,15,000 – 8,99,000 |
| Gujarat | 7,71,000 – 8,83,000 |
| Karnataka | 8,43,000 – 9,39,000 |
| Telangana | 8,15,000 – 8,94,000 |
| Delhi and NCR | 7,87,000 – 8,74,000 |
15 kW Solar System Price in 2025 in India with subsidy
| State | Price Range for 15 kW Solar (in Rupees) |
| Maharashtra | 7,48,000 – 8,07,000 |
| Madhya Pradesh | 7,17,000 – 8,17,000 |
| Uttar Pradesh | 6,82,000 – 7,62,000 (including state subsidy) |
| Rajasthan | 7,37,000 – 8,21,000 |
| Gujarat | 6,93,000 – 8,05,000 |
| Karnataka | 7,65,000 – 8,61,000 |
| Telangana | 7,37,000 – 8,16,000 |
| Delhi and NCR | 7,09,000 – 7,96,000 |
6 tips for choosing the right 15 kW solar system for your home
1. Pick a vendor that thoroughly surveys your roof
The ideal solar company uses advanced technology to conduct a thorough 365-day shadow analysis and accurately assess any potential obstacles that could affect the efficiency of your solar panels. This level of attention to detail will ensure optimal performance in the long run, avoiding problems such as hotspots, low energy production, and even fire hazards.
2. Choose a vendor that provides engineered solar solutions
The right vendor for your solar installation considers your roof’s specific geography and structural features. This way, your system is designed with precise engineering techniques to meet your home’s unique requirements, promoting safety and maximum efficiency. Avoid vendors who do not offer the same as it may result in inefficient installations.
3. Select a vendor that guarantees savings
Research conducted by CEEW and PV Diagnostics reveals that more than 50% of solar installations fail to meet performance expectations in their inaugural year. Safeguard your investment by selecting a provider that promises savings. If the system under-delivers the expected energy output, the vendor should compensate you for the shortfall.
4. Go with a vendor that offers cyclone-proof solar structures
Extreme weather occurrences, particularly cyclones, are on the rise in India. Choose a vendor that offers certified solar structures resistant to cyclones. These systems are engineered to endure strong winds, guaranteeing that your solar panels stay safe and operational regardless of the weather.
5. Choose a vendor that offers after-sales maintenance
A rooftop solar system is an investment that should last 25 years. Therefore, an important aspect of owning a solar system is regular maintenance to keep it functioning at its best until then.
Choose a vendor who offers comprehensive after-sales service for ongoing efficiency and reliability. Proper care and maintenance maximise the benefits of your solar investment.
6. Select a vendor with verified financing options
Installing rooftop solar is a huge investment for most homeowners. To make this more manageable, find a vendor who offers verified financing options through trusted financial institutions or third-party verifiers. These solutions can help you cover the upfront costs of solar installation, while still allowing you to enjoy the long-term benefits of clean energy.
Let’s explore financing options further.
15 kW solar system with Solar Loan/EMI (0 investment)
If you have a strong relationship with your bank, you can explore obtaining a loan to fund your solar installation. Banks often offer competitive interest rates and flexible repayment terms.
However, with SolarSquare’s rooftop solar solution, we offer a zero-investment plan that allows you to install the system at virtually no cost upfront, with loan approval possible in under 24 hours.
SolarSquare’s zero investment plan
- No down payment: Enjoy the benefit of zero upfront costs as the government subsidy covers the initial investment.
- EMIs = Savings: Your monthly EMIs are structured to match your electricity bill savings for minimal out-of-pocket expenses.
- Additional earnings: Benefit from the Direct Benefit Transfer (DBT) scheme, where you earn Rs. 2 per unit of excess electricity generated, further reducing your costs.
- Flexible payment terms: Choose from a variety of EMI options to suit your budget and preferences.
Why choose SolarSquare’s zero investment plan?
- Simplified process: Enjoy a hassle-free solar installation experience with our streamlined process.
- Immediate savings: Start benefiting from reduced electricity bills from day one.
- Financial flexibility: Choose the EMI option that best aligns with your budget and preferences.
- Additional income: By installing solar, you can earn an average of ₹2 per unit from excess electricity units sent to the grid with DISCOMs. However, rates and payment timelines vary across states, so understanding your state’s solar net metering regulations is key.
Features and benefits of SolarSquare’s 15.12 kW solar system
Unlike the typical 15 kW systems available in the market, SolarSquare offers a 15.12 kW system, leveraging our advanced 545-watt Monoperc half-cut bifacial modules that deliver more power per panel.
A standard 15 kW system would require 27.7 panels, which is impractical because partial panels cannot be installed. Instead, we offer a 15.12 kW system with 28 panels, ensuring optimal efficiency and ease of installation.
Here are a few other reasons why SolarSquare is the best choice for your 15 kW rooftop solar system.
- Swift installation: Once our precision-engineered components reach your doorstep, your SolarSquare system will be up and running in just about 8 hours—less than a day! You’re all set to harness solar energy and start saving on electricity bills.
- Comprehensive care: With every solar installation, SolarSquare provides regular monthly maintenance visits over five years. This includes thorough module cleaning and preventive inspections to keep your system operating at peak performance.
- Leakage-free guarantee: Our installation techniques are robust. Utilising HILTI AirTight chemical anchoring, we ensure that your roof remains leak-proof—no leaks, no cracks. Should any leakage occur after installation despite our careful measures, we stand by our promise with a ₹1 lakh leakage-free guarantee.
- Savings assured: We proudly lead the way as the first and only solar company in India to offer a savings guarantee with a money-back assurance. If our solar system fails to generate the promised units, we’ll compensate you for the shortfall at ₹8 per unit.
- Storm-proof security: Our systems feature cyclone-proof structures approved by IIT-Bombay and equipped with WindPro mounts, capable of enduring wind speeds up to 170 km/h. Your setup is designed to brave any storm.
- Premium materials: Built from top-quality virgin steel sourced from industry-leading manufacturers, our systems are engineered to resist rust and wear, ensuring optimal performance for at least 25 years.
- Direct service, no middlemen: From booking through maintenance, everything is managed by our dedicated in-house team dressed in blue. We don’t depend on third-party vendors, guaranteeing you top-notch service every step of the way!
Book a free consultation for a 15 kW solar system with SolarSquare today!
FAQ
Q1. How many solar panels are required for a 15 kW rooftop solar system?
Ans. To generate 15 kW of power using SolarSquare’s bifacial Monoperc half-cut solar panels, each rated at 545 watts peak capacity, you would require 28 panels. The calculation is straightforward:
15,000 watts / 545 watts per panel = 27.7 panels, which rounds up to 28.
Older technology panels would need more modules to reach this same capacity.
Q2. How much electricity does a 15 kW solar system generate?
Ans. A 15 kW solar system can generate approximately 19,000 to 20,000 units of electricity annually, depending on location, sunlight exposure, and installation angle. This is generally sufficient for homes or small businesses with moderate to high energy consumption and smaller housing societies.
Q3. How many appliances can be powered by a 15 kW rooftop solar?
Ans. A 15 kW solar system can comfortably power most household appliances such as:
- 10-12 fans
- 10-15 lights
- 2-3 refrigerators
- 1 washing machine
- 1 water heater
- 2-3 air conditioners
- Additional appliances like TVs, laptops, and kitchen gadgets
This system can also handle larger loads such as small business equipment or the common utilities in a small housing society.
Q4. How many ACs can run in a 15 kW solar system?
Ans. A 15 kW solar system can power around 2 to 3 air conditioners of standard capacity (1.5 to 2 tons), assuming no other major appliances are running simultaneously. However, actual performance can vary based on the overall energy consumption of the household or business and the efficiency of the AC units.
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