300 Watt Solar Panel Price in India With subsidy, Benefits, Working

300 Watt solar panel

A 300-watt solar panel is among the larger-capacity options that allow you to generate cost-efficient electricity to power your house, off-grid property, or humble office. It is an environmentally friendly alternative to traditional energy sources, such as the local grid or noisy gas-powered generators.

Over the years, solar panels have become a feasible option for domestic use. This can be attributed to advancements in solar PV technology and government subsidies that have reduced the installation cost of solar panels. If you want to cut your monthly utility expenses and produce cheap electricity on-site, consider installing a 300-watt 12v monocrystalline solar panel that can be mounted on the roof or the ground in innovative ways.

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Approx monthly electricity bill (INR)*

Benefits of 300-Watt Solar Panel

The 300-watt solar panel is an excellent investment for those looking for a renewable energy source. It has several benefits, some of which are listed below.

  1. Cost-Effective: As one of the highest-watt single solar panels, it is cost-effective as it generates ample energy to power an average-sized household. It can reduce your electricity bills significantly and save you money in the long run.
  2. Highly Durable: The 300-watt solar panel is designed to last for a long time. With a warrantied lifespan of up to 25 years, it becomes a smart long-term investment for those looking to reduce their energy bills and environmental impact.
  3. Low Maintenance: The 300w 12v solar panel requires very little maintenance, so it can provide years of reliable service without needing major repairs or replacements.
  4. Environmentally Friendly: The solar panel does not emit harmful pollutants into the environment. It is a clean and green energy source that helps reduce carbon footprint and protect the planet.

 Working of a 300-Watt Solar Panel

A 300-watt solar panel (12 volts) converts sunlight into electricity through the photovoltaic effect. The solar panel comprises several interconnected solar cells of silicon or other semiconducting materials.

When sunlight hits the solar cells’ surface, the energy captured is sent to the solar inverter. The electrical current generated by the solar cells is direct current (DC), which needs to be converted into alternating current (AC) to be used by most household appliances and devices. This is done by an inverter typically installed alongside the solar panels.

The electricity generated by the 300-watt solar panel is used to power homes, businesses, and other electrical devices. Any excess electricity generated can be used to charge a 12-volt battery bank creating a power reserve for later use. The remaining unused electricity is sent back to the grid if the system is connected to the grid.

300-Watt Solar Panel Price and Specification

A 300-watt solar panel is a popular choice for residential solar installations thanks to its high power output and efficiency. The 300-watt solar panel price in India can vary depending on factors such as the brand, type of panel, and installation costs.

It is important to note that the cost of a 300-watt solar panel is not the only factor to consider when investing in solar energy. The installation costs, including inverters, mounting equipment, and labour, must also be factored in.

300-watt panel type Solar panel price (300-watt)
Monocrystalline panels INR 10,000 to INR 16,000
Polycrystalline panels INR 10,000 to INR 15,000

**The actual 300-watt 24-volt solar panel price in India will vary by 10% to 12% based on the location, number of panels needed, manufacturer, and other installation requirements.

The specification of a solar panel determines its efficiency and performance. The technical specifications of the 300-watt solar panel are as follows.

Power output Up to 300 watts
Open Circuit Voltage (Voc) 38. 80V
Dimensions 5-5.5 feet in length and 3-3.5 feet in width
Weight 40.8 lbs (18.5kg)
Efficiency 17% – 21%
Optimum Operating Voltage (Vmp) 32. 20V
Warranty 15 to 25 years (depending on the brand)

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Approx monthly electricity bill (INR)*

Disadvantages of 300-Watt Solar Panel

The 300-watt solar panel also has some disadvantages, which are listed below.

  1. Limited energy storage: Solar panels produce electricity only when the sun is shining, and this energy needs to be stored in batteries. However, battery storage can be expensive and insufficient to power your home during extended periods of low solar energy output due to unfavourable weather conditions.
  2. Requires space: Solar panels require significant space to install, especially for larger installations. This can challenge homeowners with limited roof space or who live in apartments or multi-story buildings.
  3. Risk of theft: The 300-watt 12v monocrystalline solar panels can be an attractive target for thieves, particularly in areas with limited security.

Requirement of a 300-Watt Solar Panel to Fulfil Power Needs

You must assess your electricity consumption to determine the need for a 300-watt solar panel to fulfil your power needs. It is also essential to consider your area’s geographic location and weather conditions. The amount of sunlight that falls on your solar panels can vary depending on the time of day, season, and weather conditions. Therefore, installing solar panels in a location that receives maximum sunlight is crucial. 

Here is a brief list of the number of 300-watt solar panels you would need to achieve different energy generation requirements:

Solar system capacity Energy unit generation No. of 300-watt solar panels needed
1kW 120 3
2kW 240 7
3kW 360 10
5kW 600 17
7.5 900 25
10kW 1200 34

Applications of a 300-Watt Solar Panel

The 300-watt solar panel has several applications in various fields, some of which are listed below.

  • Street lighting: Solar-powered street lighting is becoming increasingly popular in India, and a 300-watt flexible monocrystalline solar panel can power street lights and reduce the cost of electricity.
  • Residential use: The 300-watt solar panel is used in residential homes to power appliances, like lights, fans, refrigerators, and air conditioners.
  • Solar greenhouses: A solar system leverages the sun’s power to facilitate year-round plant growth. These greenhouses use a combination of passive solar heating, and active solar technologies to create a favourable growing environment for plants.
  • Commercial use: Solar panels are used in commercial buildings like offices, schools, hospitals, and hotels to reduce electricity bills and carbon footprint.
  • Solar pumping: It is used in water pumps for irrigation, livestock watering, and other agricultural and domestic water supply applications. Solar is replacing traditional diesel or electric pumps. The process of generating solar energy is environmentally friendly and doesn’t emit toxic gases into the air, unlike non-renewable fossil fuels. 
  • Military use: The 300-watt solar panel is used in military operations to power communication systems, lighting, and other equipment.
  • Small gadget: A 300-watt 12v monocrystalline solar panel is a high-capacity solar panel that can power a wide range of day-to-day gadgets. The 300-watt flexible monocrystalline solar panels are made from a single silicon crystal and can convert high amounts of sunlight into electrical energy, giving you a higher return on your investment.

Subsidy for a 300-Watt Solar Panel in India

The government of India has been promoting the use of solar power through a unified subsidy scheme. To promote residential consumers’ use of grid-connected solar systems, the MNRE introduced the rooftop solar subsidy program that can reduce 300-watt solar panel 12-volt prices in India. Consumers who qualify may submit an online application for subsidy benefits at the National Portal for Rooftop Solar. Here are the fixed subsidy rates for different system capacities applicable throughout India.

Rooftop Solar System Capacity Applicable Subsidy (₹)
Up to 3kW 18,000/kW
Above 3kW and up to 10kW 9,000/kW*
Above 10kW 1,17,000**
Note: *₹14,588/kW for the first 3 kW and ₹7,294/kW for the rest of the capacity up to 10kW.

**The subsidy amount is fixed for rooftop solar systems above 10kW capacity.


What is the lifespan of a 300-watt solar panel in India?

The lifespan of a 300-watt solar panel in India can vary depending on several factors, such as the panel’s brand, quality, and maintenance. On average, a well-maintained solar panel can last for 25-30 years or longer. After the warrantied lifespan, the efficiency level of the panels may begin to decline, resulting in reduced energy output for the household.

Can I install a 300-watt solar panel on my rooftop?

Yes, you can install a 300-watt solar panel on your rooftop. Ensuring that your rooftop has enough space and receives adequate sunlight for optimal performance is essential.

How do I choose the suitable inverter for my 300-watt solar panel?

When choosing an inverter for your 300-watt solar panel, ensure that it has a capacity of at least 300 watts and is compatible with the specifications of your solar panel. The best option is to consult with a professional solar installer to choose a suitable inverter.

Are there any subsidies for a 300-watt solar panel?

When considering the 300w 12v solar panel price in India, it is important to learn about the applicable subsidy or incentives you can benefit from. In India, the government provides solar subsidies and incentives through the net metering mechanism to encourage the use of solar energy. These subsidies can significantly reduce the cost of installing a solar panel system, including a solar panel 300-watt price.

Can solar panels work in cloudy weather?

300-watt solar panels can still generate electricity in cloudy weather, although the amount of electricity produced will be lower than on a sunny day. Cloudy weather reduces the amount of sunlight that reaches the solar panel, reducing the amount of electricity produced. However, monocrystalline and bifacial solar panels are designed to be highly efficient and can still produce electricity even in low-light conditions.

Amplus Solar

Amplus Solar

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