What’s the 150-watt Solar Panel Price in India? Applications, Pros, and Cons Explained

The 150-watt solar panel price in India in 2025 can range between ~Rs. 3,500* and ~Rs. 9,000*, based on the brand and the type of panel (polycrystalline or monocrystalline). These compact photovoltaic modules, ideal for off-grid applications, are rated to produce up to 150 watts of power under Standard Test Conditions (STC). They can produce a 12V DC output and power low-energy devices such as LED lights, small fans, and phone chargers.     

*Please note: The above-mentioned 150-watt solar panel price range is indicative and not fixed. The final 150-watt solar panel price in India depends on panel type, your city, brand, cell technology used, market demand of the module, GST inclusion, offers by the manufacturer, etc. Prices are subject to change. SolarSquare does not endorse, sell, or manufacture 150-watt solar panels. We install on-grid rooftop solar panel systems for homes, housing societies, and commercial complexes using higher-wattage solar panels.

Under STC, 150-watt solar panels generate their maximum rated power at 1000 W/m² irradiance, 25°C cell temperature, and ideal conditions. However, in real-world conditions, they can produce 70-85% of their rated capacity. 

You can use these panels for RV installations, boat systems, and remote cabin setups where grid connection isn’t available. However, they’re unsuitable to build kW-scale on-grid solar systems because you’ll need many panels and a lot of roof space to reach the desired capacity. 

High-efficiency solar panels with higher wattage, such as 540Wp bifacial solar panels with PERC technology, are used to build residential and commercial rooftop systems. 

If you have to build something even as small as a 3 kW solar system, you’ll need only ~6 540Wp solar panels, but ~20 150W solar panels. Most roofs don’t have so much shadow-free space on their roofs to accommodate so many panels. Hence, high-wattage solar panels are preferred to build rooftop solar systems for housing societies, homes, and industries. 

In this blog, we’ve explained the 150W solar panel price in detail, the factors that affect the final 150-watt solar plate price, advantages and disadvantages of these panels, and their applications and specifications. We’ve also explained why higher-wattage half-cut solar panels are most recommended for building kW-scale photovoltaic systems, and the cost of installing on-grid rooftop solar systems in India vs. the solar savings they offer.

TL;DR Summary Box: How Much Power Will a 150-Watt Solar Panel Produce?

While a 150-watt solar panel is rated to produce 150 watts under Standard Test Conditions, its real-world output is generally lower. Under STC, the module can produce ~17.5-18.5 volts (Vmp). The open-circuit solar panel voltage (when the panel is not connected to any load) measures ~21-22.5 volts.

However, in the real world, several environmental factors significantly reduce this output. During sunny weather conditions, you can expect a 150-watt solar panel to produce ~105 to ~127 watts of actual power, producing ~16-18 volts.

Here are the main topics we’ve touched upon in this blog in detail:

*Please note: The above-mentioned 150-watt solar panel price is indicative and not fixed. The final 150W solar panel price in India depends on panel type, your city, brand, cell technology used, market demand of the module, GST inclusion, offers by the manufacturer, etc. Prices are subject to change. SolarSquare does not endorse, sell, or manufacture 150-watt solar panels. 

What’s the 150-watt Solar Panel Price in 2025 in India?

The 150-watt solar panel price varies significantly depending on whether the module is polycrystalline or monocrystalline. It’s also worth noting that modules from reputable solar panel manufacturers tend to cost more, as they usually offer longer warranties and better performance and build quality than panels from local companies.

Here’s a table that demonstrates the estimated 150W solar panel price range in India:

*Please note: The above-mentioned 150-watt solar plate price is indicative and not fixed. The final 150-watt solar panel price in India depends on panel type, your city, brand, cell technology used, market demand of the module, GST inclusion, offers by the manufacturer, etc. Prices are subject to change. SolarSquare does not endorse, sell, or manufacture 150-watt solar panels. 

What Factors Affect the 150-watt Solar Panel Price in India?

The top factors that determine and fluctuate the final estimated 150-watt solar panel price include the type of solar panel, brand, and manufacturer’s reputation. However, these are not the only factors that influence the 150W solar panel price in India. Let’s check out all the factors in detail.

• Cell technology used: Monocrystalline panels cost more than polycrystalline, but they’re also more efficient and produce more electricity using the same amount of solar radiation. 
• Brand reputation: Established brands command premium pricing because they use high-quality products to manufacture their panels and often provide longer warranties.
• Manufacturing quality: High-quality materials increase production costs, but they’re a better deal in the long run since these panels have fewer faults and performance issues.
• Certifications: IEC, BIS, and other certifications add to manufacturing expenses. However, these certifications ensure that the panel you purchase today will last for 25+ years.
• Warranty terms: Longer or extendable warranties can increase the final 150-watt solar panel price.
• Import duties: International brands and imported solar panels face additional customs and shipping costs. This can significantly increase the final 150-watt solar plate price.

What is a 150-watt Solar Panel and How Does it Work?

A 150-watt solar panel is a photovoltaic module rated to produce a maximum output of 150 watts under Standard Test Conditions (STC). The 150 W rating represents the panel’s performance under laboratory conditions, with a solar irradiance of 1000 W/m² and a cell temperature of 25°C.

These panels contain anywhere from 36 to 72 solar cells arranged in a grid pattern. Unlike high-efficiency solar panels with a half-cut cell design, lower-wattage panels, such as 100-watt, 150-watt, and 200-watt models, use full solar cells.

How Does a 150-watt Solar Panel Work?

A silicon solar panel, no matter its wattage, works on the same photovoltaic principle, where solar energy displaces electrons to initiate current flow. 

Here’s the step-by-step process of how a 150-watt solar panel works:

• Step 1 – Sunlight falls on the solar panels: Solar cells in solar panels absorb photons from sunlight. Photons transfer their energy to electrons present in the solar cells.
• Step 2 – Energized electrons leave their place: When electrons receive the energy from photons, they get excited and begin to move. The place they leave empty is known as a hole, which is positively charged. 
• Step 3 – Both charges are prevented from recombining at the p-n junction: The built-in electric field in the solar cell pushes electrons and holes in opposite directions.  
• Step 4 – Electrons flow in one direction: This unidirectional flow of electrons is called direct current.

What Can a 150-watt Solar Panel Run?

A 150-watt solar panel can power low-energy devices when paired with lithium batteries. 

Here’s a list of appliances these panels can power:

• LED lights: 8-12 LED bulbs for 6-8 hours
• Small DC fans: One 40W ceiling fan for 8-10 hours 
• Phone chargers: Multiple smartphone charges throughout the day 
• Laptop charging: 2 full laptop charges 
• Small TV: 1 32-inch LED TV for 6-7 hours

These panels can also be used for the following purposes:

• RVs and camper vans: Power lighting, charge phones, run small fans, and operate 12V appliances during road trips.
• Boats and yachts: Maintain battery charge for equipment, cabin lights, and communication devices.
• Remote cabins: Off-grid lighting, phone charging, and small electronics in vacation homes.
• Outdoor activities: Camping trips, tailgating, and outdoor events requiring portable power.

What are the Types of 150-watt Solar Panels?

The two primary types of 150-watt solar panels are polycrystalline and monocrystalline. Since these are low-wattage modules, they’re available as monofacial panels rather than bifacial panels, which are more common in rooftop solar systems. Monocrystalline panels are more efficient than poly panels; hence, they cost more but produce more electricity. 

Here’s a tabulated snapshot of how the two types differ:

*Please note: The above-mentioned 150-watt solar panel price range is indicative and not fixed. The final 150-watt solar panel price in India depends on panel type, your city, brand, cell technology used, market demand of the module, GST inclusion, offers by the manufacturer, etc. Prices are subject to change. SolarSquare does not endorse, sell, or manufacture 150-watt solar panels. We install on-grid rooftop solar panel systems for homes, housing societies, and commercial complexes using higher-wattage solar panels.

What are the 150-watt Solar Panel Specifications? 

Let’s check out the major 150-watt solar panel specifications you can keep in mind while making a purchase:

*Please note: The 150-watt solar panel specifications listed above are for fixed modules, not foldable solar panels. Actual specifications can also vary significantly by brand and model. Always use the manufacturer’s datasheet for exact values. 

Why is a 150-watt Solar Panel Unsuitable for an On-grid Rooftop Solar System?

150 watts is not enough power to reach the desired kilowatt capacity in a limited space. Most homes have limited rooftop space, and if you use something as small as a 150-watt solar panel, you’ll have to use many solar panels to reach the kW-scale capacity. That’s one clear limitation indicating why 150-watt solar panels are unsuitable for grid-connected solar systems. 

Let’s take the example of building a 3 kW solar system using 150-watt solar panels. The formula used to calculate the number of solar panels is listed below:

Number of solar panels = solar system’s capacity in watts ÷ solar panel’s capacity

Based on this formula, you’ll need 20 150-watt solar panels to build a 3 kW solar system. Here’s why using so many panels is unrealistic: 

• It will make the installation extremely expensive: Wiring and mounting 20 panels means you’ll need more junction boxes, more cable runs, and a heavier structure. All that adds up to higher costs in both materials and installation.
• It will take up a lot of space on the roof: To fit 20 panels, you will need a large, shadow-free section of rooftop. Most homes simply don’t have that much usable space for solar.

These are the reasons why half-cut PERC or TOPCon solar panels are used to build kW-scale solar systems. Most mono-PERC solar panels are rated at 540 Wp, while TOPCon panels can reach 700 Wp or more. You’ll need way fewer panels and much less space to reach the desired system capacity, and these panels will also perform well in shade due to their half-cut design. 

150-watt Solar Panels vs 540-watt Solar Panels

Let’s compare the number of 150-watt and 540-watt solar panels needed to build different-capacity solar systems to give you a detailed idea of why high-wattage panels are most recommended:

What are the Advantages and Disadvantages of a 150-watt Solar Panel?

150-watt solar panels are excellent for on-the-go charging and RVs, while you’re on the road and need a reliable power supply while you’re off-grid. However, the biggest limitation of these panels is that they can’t power an entire home. 

Let’s check out the advantages and disadvantages in detail.

What are the Advantages of 150-watt Solar Panels?

150-watt solar panels offer excellent value for off-grid applications, with simple installation that usually does not require professional services. 

• Easy installation: They can be mounted on RVs and boats without professional help.
• They weigh less than high-wattage panels: These panels are portable, weighing ~12 kg. You can carry them while you hit the road and take them to all camping and hiking spots.

• They are simpler to maintain: Since you’re using them just for charging lithium batteries or small appliances, you’ll need fewer components, such as a solar panel charge controller. And fewer components mean fewer potential failure points.
• They can charge multiple devices in off-grid locations: Even in areas without grid electricity, a 150-watt solar panel can charge flashlights, power banks, smartphones, LED bulbs, and tablets using a charge controller. 

What are the Disadvantages of 150-watt Solar Panels?

150-watt solar panels can’t be used to build higher-capacity solar systems. Moreover, unlike higher-wattage panels that can continue generating power even under partial shading due to their half-cut design, low-wattage 150-watt solar panels don’t come in half-cut designs. Hence, they need strong sunlight to work efficiently. 

Let’s check out all the primary disadvantages of 150-watt solar panels:

• They have a limited power output: 150-watt panels deliver less power than high-wattage panels, making them unsuitable for kW-scale solar systems.
• The output drops significantly under shading: Even if only half of the panel is shaded, the overall output decreases. Hence, they do not perform optimally under cloud cover when sunlight is not as strong as on a bright, sunny day.
• They require lithium batteries for nighttime usage: Since they’re not connected to the grid, you’ll need a lithium battery bank if you want to power your devices at night. Lithium batteries and charge controllers increase the overall cost.
• Charging is slow, not instant: Don’t expect fast charging from a 150-watt panel like you get from a wall socket. These panels will charge gadgets and small batteries, but at a slower pace.

What’s the Cost of Rooftop Solar Panel Installation in India?

The cost of installing a solar system in India, with subsidy, for on-grid systems, ranges between ~Rs. 80,000* in Lucknow to ~Rs. 1.35 lakh* in Bangalore for 2 kW solar systems and ~Rs. 4.47 lakh* in Lucknow to ~Rs. 5.37 lakh* in Bangalore for 10 kW solar systems.

Here’s a tabulated snapshot of the estimated rooftop solar installation cost in India in 2025:

*Please note: The cost of solar installation in India for on-grid solar systems listed in the section above is indicative as of 28th October 2025 for the SolarSquare Blue 6ft variant. 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. 

Solar Panel Price in India vs Solar Savings in 25 Years

You can use SolarSquare’s free solar panel calculator to check the solar savings you can receive in your city vs the cost of installation. 

For clarity, we’ve created this table that shows the cost of installing rooftop solar in Pune vs. the solar savings the same system delivers over its 25-year lifespan. Have a look!

*Please note: The above-mentioned solar panel price in Pune for on-grid solar systems listed is indicative as of 28th October 2025 for the SolarSquare Blue 6ft variant. 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, when calculating savings, we have considered an annual tariff escalation of 3% and an annual plant degradation rate 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.

Conclusion

The 150-watt solar panel price in 2025 ranges between ~Rs. 3,500* and ~Rs. 9,000*, based on the brand and panel type. Investing in these panels is worthwhile for people looking to buy one for off-grid solar charging. Since these are low-wattage panels, they are not ideal for building high-capacity solar systems, whether on-grid or off-grid solar systems.   

*Please note: The above-mentioned 150-watt solar panel price is indicative and not fixed. The final 150-watt solar panel price in India depends on panel type, your city, brand, cell technology used, market demand of the module, GST inclusion, offers by the manufacturer, etc. Prices are subject to change. SolarSquare does not endorse, sell, or manufacture 150-watt solar panels. 

If you’re looking for the best solar panels to build a rooftop solar system for your home, you will need higher-wattage and high-efficiency solar panels. For any further information, you can book a free solar consultation call with SolarSquare.

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FAQs

Q1. Can a 150-watt solar panel power a refrigerator?

Ans. No, a single 150-watt solar panel cannot power a household refrigerator due to insufficient energy production and high startup current requirements. You will need multiple 150-watt solar panels to power a refrigerator.

Q2. Can a 150-watt solar panel charge a car battery?

Ans. Yes, a 150-watt solar panel is excellent for charging and maintaining car batteries, providing sufficient power for 12V automotive applications.

Q3. Is 150W enough to power a TV?

Ans. A 150-watt solar panel can power a single 32-inch LED TV for 6-7 hours. If you need to run the TV at night or anytime after sunset, you will require a lithium battery to store solar energy for nighttime usage.

Q4. What is the lifespan of a 150-watt solar panel?

Ans. A 150-watt solar panel from premium brands can last for 25 years or more.

Q5. Do you need a battery with a 150-watt solar panel?

Ans. While a battery is not needed during the daytime when there’s sunlight, if you need power for nighttime usage, you will require a lithium battery to store solar energy generated by the 150-watt panel, which can be used at night.

Q6. What are the applications of a 150-watt solar panel?

Ans. The main applications of a 150-watt solar panel include charging gadgets, lighting small rooms, RVs, boats, remote cabins, or running a laptop and an LED TV. However, they can’t meet your household’s energy requirements.