What’s the 3 kW Solar Panel Price in Karnataka With Subsidy in 2025? ROI Calculations Included

The 3 kW solar panel price in Karnataka with subsidy for on-grid solar systems drops from ~Rs. 2.25 lakh* to ~Rs. 1.47 lakh* in Bangalore. This significant price reduction is the result of the PM Surya Ghar solar rooftop scheme in Karnataka. The PM Surya Ghar Muft Bijli Yojana is a financial assistance program offered by the central government to homeowners and housing societies across the country, including Karnataka.

*Please note: The above-mentioned 3 kW solar panel price in Karnataka with subsidy is indicative as of 13th October 2025 for the SolarSquare Blue 6ft variant in Bangalore. The final solar plate price in Karnataka depends on your DISCOM charges, city, product variant opted for, panel type, inverter type, mounting structure height, type of after-sales service, savings guarantee, roof height, etc. Prices are subject to change. 

Although the Karnataka state government does not offer a separate state solar subsidy like Delhi and UP, the PM Surya Ghar scheme provides homeowners with substantial assistance of Rs. 78,000 for 3 kW or higher capacity solar systems, making solar panel installation in Karnataka extremely affordable. 

Investing under a lakh and a half, as the 3 kW solar panel price in Karnataka with subsidy, is worthwhile because the ROI is nearly 6.6 times the initial investment. Yes, you heard that right! A 3 kW on-grid rooftop solar panel system for homes in Karnataka can save ~Rs. 9.73 lakh* over 25 years of its life. No other investment can offer returns as high as a 3 kW rooftop on-grid solar system in Karnataka.    

In this blog, we will explain the total solar panel price in Karnataka for a 3 kW rooftop solar system, both with and without a subsidy in 2025. We will also explain the ROI you can receive from a 3 kW solar system in Karnataka, the benefits of choosing on-grid over off-grid solar systems and hybrid PV systems, and the multiple reasons that impact the overall solar panel price in Karnataka.

TL;DR Summary Box: Who is Eligible for Surya Ghar Yojana Solar Subsidy in Karnataka?

Homeowners can benefit from a solar subsidy in Karnataka under the PM Surya Ghar Muft Bijli Yojana if they install grid-connected solar systems with made-in-India DCR solar panels and legally own the property where the installation is supposed to happen. You should also have a valid electricity connection in your name with your city’s DISCOM, and you must have never benefited from a solar panel subsidy in Karnataka for systems up to 3 kW ever before.

Here are the main topics we’ve covered in this blog:

*Please note: The above-mentioned 3 kW solar panel price in Karnataka for on-grid solar systems is indicative as of 13th October 2025 for the SolarSquare Blue 6ft variant in Bangalore. The final solar plate price depends on your DISCOM charges, city, product variant opted for, panel type, inverter type, mounting structure height, type of after-sales service, savings guarantee, roof height, etc. Prices are subject to change. Additionally, the 3-kilowatt solar panel price for off-grid and hybrid systems listed above is based on standard market estimates. SolarSquare does not sell or install off-grid or hybrid solar systems. We exclusively install on-grid rooftop solar panel systems for housing societies, homes, commercial buildings, and industrial facilities. 

How Much is the Subsidy on Solar Panels in Karnataka?

Karnataka homeowners benefit from a solar subsidy under the PM Surya Ghar Muft Bijli Yojana. The maximum subsidy under this scheme is capped at Rs. 78,000. 

Here are the subsidy details, as listed on the official government website:

• Solar subsidy for 1-2 kW solar systems: Rs. 30,000 per kilowatt
• Solar subsidy for additional capacity over and above 2 kW up to 3 kW: Rs. 18,000
• Solar subsidy for 3 kW or higher capacity: Rs. 78,000  

Based on the details listed above, we’ve created a simplified table to walk you through the exact Karnataka solar subsidy for different capacity solar systems:

What’s the 3 kW Solar Panel Price in Karnataka with Subsidy in 2025?

Once you avail a solar panel subsidy for a 3 kW solar system, the final 3 kW solar panel price in Karnataka with subsidy will plummet by Rs. 78,000. 

Here’s a tabulated snapshot of the 3-kilowatt solar panel price in Karnataka, both with and without a subsidy in 2025:

*Please note: The above-mentioned 3-kilowatt solar panel price in Karnataka is indicative as of 13th October 2025 for the SolarSquare Blue 6ft variant. The final solar panel price in Karnataka depends on your DISCOM charges, city, product variant opted for, panel type, inverter type, mounting structure height, type of after-sales service, savings guarantee, roof height, etc. Prices are subject to change. 

3 kW Solar Panel Price in Karnataka with Subsidy vs ROI

Whether it’s an FD, a mutual fund, or an investment in gold, none of them will offer you ~6.6 times the return on their initial cost, but a 3 kW solar system in Karnataka will. 

Here’s a snapshot of the 3 kW solar panel price in Karnataka with subsidy vs the solar savings you will receive over 25 years, since the solar system will continue generating free solar electricity throughout its life, making your bills zero:

*Please note: The above-mentioned 3 kW solar panel price in Karnataka with subsidy is indicative as of 13th October 2025 for the SolarSquare Blue 6ft variant in Bangalore. The final 3 kW solar panel price for homes in Karnataka depends on your DISCOM charges, city, product variant opted for, panel type, inverter type, mounting structure height, type of after-sales service, savings guarantee, roof height, etc. Prices are subject to change. Additionally, when calculating savings, we have considered an annual tariff escalation of 3% and an annual degradation of 1%. The actual final savings from an on-grid rooftop solar system depend on the types of solar panels you’ve installed and their efficiency, intensity of sunlight your rooftop receives, orientation of the panels and tilt angle, the pollution level and weather conditions in your city, the temperature, shadow on the roof, impact of dirt/dust, and how well you maintain your panels after installation.

SolarSquare also provides a free solar panel calculator that anyone across India can use to find the solar installation cost in their city and compare it with the solar savings that the system will offer in its 25-year lifespan!

How to Apply for a Solar Subsidy in Karnataka?

You can apply for a solar panel subsidy in Karnataka through the PM Surya Ghar Muft Bijli Yojana National Portal. Follow the steps listed below to claim your subsidy:

• Step 1 – Visit the official portal: Open the official website, the PM Surya Ghar Muft Bijli Yojana National Portal. You will find an icon stating, Apply for Rooftop Solar. Click on it.
• Step 2 – Create your consumer profile: Once you click on Apply for Rooftop Solar, you will be asked to select your state, district, and DISCOM, and enter your Customer Account Number. Once you fill in all these details, your consumer account will be registered. 
• Step 3 – Fill out the rooftop solar form: To proceed, you will need to provide personal information, such as your name and age, along with details from your most recent electricity bill.
• Step 4 – Add banking information: Submit all the documents requested by the portal and upload a cancelled cheque. 
• Step 5 – Select an empanelled installer: Choose a solar installation company, such as SolarSquare, from the DISCOM-approved list. This company will install a solar system at your home.
• Step 6 – Upload the signed agreement: Sign the contract with your installer and upload the signed copy to the National Portal.
• Step 7 – Net meter is installed: DISCOM installs a bi-directional or smart meter after your installation company installs your rooftop solar system.
• Step 8 – Get the commissioning certificate: Once the system is verified as operational, DISCOM provides a Solar Commissioning Certificate.
• Step 9 – File your subsidy claim: Log in to the National Portal and submit the Commissioning Certificate to file for the subsidy.
• Step 10 – Receive the subsidy: After approval, the subsidy is credited directly to your bank account within 30 days.

What Are the Types of 3 kW Solar Systems and Their Prices in Karnataka?

The three main types of solar systems are on-grid, off-grid, and hybrid solar energy systems. The latter two require lithium batteries to store solar energy for later use, making them extremely expensive because the batteries are a costly investment that also need occasional replacement. Since an on-grid solar system does not need batteries, it’s the most affordable option for installing both residential and commercial rooftop systems.

Before we discuss how these three types differ, let’s have a look at the cost difference between them:

*Please note: The above-mentioned 3 kW solar panel price in Karnataka with subsidy for on-grid solar systems is indicative as of 13th October 2025 for the SolarSquare Blue 6ft variant in Bangalore. The final 3 kW solar plate price depends on your DISCOM charges, city, product variant opted for, panel type, inverter type, mounting structure height, type of after-sales service, savings guarantee, roof height, etc. Prices are subject to change. Additionally, the 3-kilowatt solar panel price for off-grid and hybrid systems listed above is based on standard market estimates. SolarSquare does not sell or install off-grid or hybrid solar systems. We exclusively install on-grid rooftop solar systems for homes, housing societies, commercial buildings, and industrial facilities. 

Now, let’s understand how the three types differ and why on-grid rooftop solar systems are considered the best investment: 

*Please note: The above-mentioned 3 kW solar panel price in Karnataka with subsidy for on-grid solar systems is indicative as of 13th October 2025 for the SolarSquare Blue 6ft variant in Bangalore. The final 3 kW solar panel price depends on your DISCOM charges, city, product variant opted for, panel type, inverter type, mounting structure height, type of after-sales service, savings guarantee, roof height, etc. Prices are subject to change. Additionally, the 3 kW solar plate price for off-grid and hybrid systems listed above is based on standard market estimates. SolarSquare does not sell or install off-grid or hybrid solar systems. We exclusively install on-grid rooftop solar systems for homes, housing societies, commercial buildings, and industrial facilities. 

Which is the Best Solar Panel in Karnataka?

The latest high-efficiency solar panels, made with TOPCon and PERC technology, are considered the best solar panels. These bifacial modules have half-cut solar cells that improve their shade performance. They’ve replaced polycrystalline solar panels because they perform better even at high temperatures, are much more efficient, and generate solar electricity even if shadows from nearby objects cover half of the panel.

Here’s a neck-to-neck comparison between mono-PERC and TOPCon solar panels:

What Are the Top Factors that Affect the Final Solar Panel Price in Karnataka?

The main factors that influence the solar panel price in Karnataka include your DISCOM charges, city, product variant opted for, panel type, inverter type, mounting structure height, type of after-sales service, savings guarantee, system capacity, type of solar system, subsidy eligibility, and roof height. 

Let’s understand how these factors impact the final solar panel price in detail.

• DISCOM charges: Different DISCOMs in Karnataka have varied application, inspection, and net-metering fees. These charges can slightly affect the overall system cost depending on your city and local utility provider.
• Solar panel type: High-efficiency solar panels cost more upfront but offer better ROI in the long run, as they generate more power than low-efficiency panels.
• Solar inverter type: Micro-inverters can be up to 90% costlier than string inverters. Your choice of inverter can significantly increase or decrease the solar panel installation cost.
• Mounting structure height: The taller the structure, the costlier it is. The ideal height can only be recommended by experts based on shadows from surrounding objects. Taller structures also require stronger materials and more labor for stability, which adds to the cost.
• Type of AMC (annual maintenance contract): Comprehensive AMCs, which cover yearly servicing, cleaning, and inverter health checks, cost more upfront but significantly reduce long-term maintenance hassles. It’s highly recommended that customers invest in AMCs.
• System capacity: Higher-capacity solar systems cost more than lower-capacity solar systems. The ideal size depends on your energy requirements.
• Type of solar photovoltaic system: Off-grid and hybrid solar systems are much more expensive than on-grid solar systems because they require lithium batteries, which are very costly.
• Subsidy eligibility: If you are indeed eligible for the PM Surya Ghar scheme, the final installation cost will be reduced.
• Roof height: Higher roofs make installation more complex, increasing labor and safety costs. 
• Your city: Solar panel prices vary slightly from city to city due to differences in local labor charges, transportation costs, and DISCOM regulations.
• Roof type and shading issues: Sloped or tiled roofs, weak roof structures, or shading constraints require custom mounting and structural work, which increases costs.
• Taxes and duties: GST, import duties, and regulatory fees applied to components and services also add to the total cost.
• Component cost fluctuations: Prices of panels, inverters, steel, and raw materials change with global supply, duties, and currency swings, influencing the final price.

Is a 3 kW Solar Panel Enough for a Home in Karnataka?

A 3 kW solar system is an ideal system size for 2-3 BHK homes with modest electricity consumption, ranging between 4,200 and 4,350 units annually. You can also run a single 1.5-ton air conditioner on a 3 kW solar system in Karnataka.

Here’s a list of common appliances a 3 kW solar system can support:

• One 1.5-ton air conditioner
• 3-4 LED bulbs and 1-2 LED tube lights
• 4-5 ceiling fans
• 1 refrigerator
• 1 LED TV
• 1 washing machine
• 1 mixer grinder
• 1 induction cooktop 

What Are the Benefits of a 3 kW On-Grid Rooftop Solar Panel System?

A 3 kW on-grid solar system in Karnataka can help you reduce your reliance on expensive grid electricity, lowering your bills by more than 90%. They also have a quick payback period and a high ROI.

Let’s check out all the benefits that 3 kW solar systems offer in Karnataka:

• They lower electricity bills by 90% or more: Since you will no longer rely on expensive grid electricity, your bills will be slashed by 90% or more, offering massive savings over 25 years.
• They make you eligible for a subsidy, making installation cheaper: You can buy a 3 kW grid-connected solar system at rates lower by Rs. 78,000 because that’s the financial assistance you will receive under the PM Surya Ghar solar panel subsidy in Karnataka.
• They do not require lithium batteries for energy storage: On-grid solar systems directly send any excess energy straight to the grid. And whenever needed, electricity can be imported from the grid. This eliminates the need for batteries, making on-grid systems extremely affordable.
• They have a quick payback period and a high ROI: It takes only 3 to 5 years for the investment to break even. Since the system continues generating free electricity for 25+ years, the ROI you can get from an on-grid 3 kW solar system in Karnataka is ~6.6.
• They reduce air pollution: You can be the reason behind improved air quality index in your state just by installing a 3 kW solar system, because a 3 kW solar system is equivalent to planting 118 trees, which can offset 77,616 kg of carbon dioxide over 25 years. 

Why Choose SolarSquare’s 3.24 kW and 3.78 kW Solar Systems?

Solar panels are manufactured in fixed wattages, not in custom sizes. Many high-efficiency solar panels today are rated at 540W. When you aim for a 3 kW system using 540Wp modules, the math doesn’t land, as it comes out to 5.55 panels (3,000 ÷ 540). 

Since you can’t install 5.55 panels, the two closest options are:

• 5 panels (2.7 kW): This downsized system will not be able to fulfil all your energy requirements or bring your bills down to zero.
• 6 panels (3.24 kW): This is what SolarSquare offers. It’s a smart design that will cover all your energy requirements and eliminate the issue of downsizing. 

For homes that need more power than a 3.24 kW system can generate, but still less than 4 kW, we have developed a 3.78 kW solar system using seven solar panels.

Here’s a table that clearly lists the calculation for the exact number of solar panels required for our solar systems vs a standard 3 kW system:

Conclusion

The 3 kW solar panel price in Karnataka with subsidy for on-grid solar systems in Bangalore reduces from ~Rs. 2.25 lakh* to ~Rs. 1.47 lakh*. Investing just ~Rs. 1.47 lakh* on a 3 kW solar system in Karnataka today will save ~Rs. 9.73 lakh* over 25 years of the system’s life, where it will generate free electricity for you using nothing but solar energy. That’s ~6.6 times the return on investment!

*Please note: The above-mentioned 3 kW solar panel price in Karnataka with subsidy is indicative as of 13th October 2025 for the SolarSquare Blue 6ft variant in Bangalore. The final 3 kW solar panel price for homes in Karnataka depends on your DISCOM charges, city, product variant opted for, panel type, inverter type, mounting structure height, type of after-sales service, savings guarantee, roof height, etc. Prices are subject to change. Additionally, when calculating savings, we have considered an annual tariff escalation of 3% and an annual degradation of 1%. The actual final savings from an on-grid rooftop solar system depend on the types of solar panels you’ve installed and their efficiency, intensity of sunlight your rooftop receives, orientation of the panels and tilt angle, the pollution level and weather conditions in your city, the temperature, shadow on the roof, impact of dirt/dust, and how well you maintain your panels after installation.

If you need further information about rooftop solar installation in Karnataka, you can book a free solar consultation call with SolarSquare. 

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FAQs

Q1. Which company’s solar panel is best?

Ans. The three most reputable solar panel manufacturers in India are ReNew Solar, Premier Energies, and Rayzon.

Q2. What is the lifespan of a 3 kW solar panel?

Ans. A well-maintained solar panel from a top-tier brand can last for 25 years, and continue working at 80% efficiency even after 25 years.

Q3. How many ACs can run on a 3 kW solar system?

Ans. A 3 kW solar system can run one single 1-5-ton AC alongside other appliances, including fans, lights, a TV, a refrigerator, and a washing machine in a 2-3 BHK home.

Q4. What size roof is needed for a 3 kW solar system?

Ans. It requires 300 square feet of shadow-free area on the rooftop to install a 3 kW on-grid rooftop solar system optimally.