A 400-watt is a powerful solar panel wattage option for commercial and residential energy needs. These panels are designed to convert sunlight into electricity and sustainably power your appliances, charge batteries, run heavy-duty systems, and more.
Modern 400-watt solar panels are easy to install and can be mounted on the roof, ground, or as a pergola or canopy. Solar panels offer a cost-effective and sustainable way to generate energy while reducing your carbon footprint.
Benefits of 400-Watt Solar Panel
The benefits of a 400-watt solar panel are numerous. Not only will you save money on your energy bills, but you’ll also be perfecting the terrain using renewable energy. Some of the benefits are as follows.
- Save Money on Your Energy Bills
A 400-watt solar panel is a cost-saving option for your energy bills. With the right system size, solar becomes a primary energy source for your property. By utilising solar batteries, you can ensure a consistent supply of solar energy during the day and night. This reduces your dependence on grid electricity and monthly utility bills.
- Helps to Mitigate Climate Change
By using solar energy, you can help reduce pollution and climate change. With 400-watt solar panels, you enjoy an emission-free power generation process and reduce your overall carbon footprint. Also, unlike traditional sources of electricity, like coal or oil, they have a minor impact on the terrain overall.
- Provides You with Power Outage Cover
A 400-watt solar panel combined with a battery bank can cover your home against power outages in a storm or other natural disaster. When the grid is down, the solar batteries actively keep your home powered.
Working of a 400-Watt Solar Panel
400-watt solar panels are the most common-sized panels, producing enough power to light up a room or two.
A 400-watt solar panel works by harnessing sunlight using semiconductor materials in its solar cells. When sunlight strikes the cells, it excites electrons, generating direct current (DC) electricity. The solar cells are connected in series or parallel to increase the voltage and current. This DC electricity is converted into alternating current (AC) by an inverter, making it suitable for household use or feeding back into the grid.
Watt solar panels come in different sizes and shapes, and the 400w solar panel price also varies, so you can find one that fits your requirements because they look better on roofs or other locations where they are installed.
400-Watt Solar Panel Price and Specification
The average 400w solar panel price depends on the panel type. To find a solar panel for your requirements, you must do your research. Factors that will affect the price of a watt solar panel include the panel size, the manufacturing company, and the quality of the cells.
|400-watt panel type
|Solar panel price (400-watt)
|Rs. 10,800 to Rs. 13,200
|Rs. 9,800to Rs. 11,220
** The actual 400-watt solar panel price in India varies by 10% to 12%, based on the position, number of panels demanded, manufacturer, and other installation conditions.
**It’s important to note that the 400-watt solar panel price is one of many factors to consider when investing in solar energy. The installation costs must also be considered, including inverters, mounting equipment, and labour.
The 400w solar panel specification includes the panel’s size, voltage, and power conditions. Knowing these specifications is essential to select the correct wattage to suit your unique requirements.
The specification of a solar panel determines its efficiency and performance. The technical specifications of the 400-watt solar panel are as follows.
|Up to 400 watts
|Open Circuit Voltage (Voc)
|21.9 x 31.4 x 1.8 cm
|18% to 21.2%
|Optimum Operating Voltage (Vmp)
|10 to 15 years (depending on the brand)
Requirement of a 400-Watt Solar Panel to Fulfil Power Needs
With the increasing electricity demand, many individuals and housing societies are turning to alternative energy sources to fulfil their power needs. One of the most popular and efficient options is a 400-watt solar panel. These panels can generate a significant amount of electricity from sunlight and be a more reliable power source, even on cloudy days and in winter.
Here is a brief list of the number of 400-watt solar panels you would need to achieve different energy generation requirements:
|Solar system capacity
|Estimated Energy Output
|No. of 400-watt solar panel needed
Applications of a 400-Watt Solar Panel
More and more people have been looking into solar energy as an alternative to traditional energy sources. Solar panels are an excellent option for those who want to reduce their environmental impact and save money on their energy bills. Solar panels of 400 wattage capacity are preferred for high energy usage areas, such as:
- Camping and Hiking Gear
Bringing your power source is always brilliant if you head out on a camping or hiking trip. A 400-watt solar panel can give you enough electricity to charge your batteries and electronics and light up your campground or shack.
- Off-Grid Home Lighting
Living in an area without access to an electricity grid? A 400-watt solar panel can be a great way to power your lights and other appliances without counting on outside sources. Just be sure to factor in the cost of installation before buying.
Subsidy for a 400-Watt Solar Panel
Residential solar power projects, including solar panels, are supported by subsidies and incentives from the Indian government under the Rooftop Solar Subsidy Scheme. The subsidy scheme is processed and disbursed pan-India through the National Portal for Rooftop Solar. While the initial solar panel 400-watt price may be high, the long-term savings are significant, particularly for those who use a lot of electricity.
Here are the fixed subsidy rates for different system capacities applicable for all grid-tied solar power systems installed in houses and housing societies.
|Rooftop Solar System Capacity
|Applicable Subsidy (₹)
|Up to 3 kW
|Above 3 kW and up to 10 kW
|Above 10 kW
|Resident Welfare Associations (RWA) / Group Housing Societies (GHS)
|₹7,294/- per kW
For common facilities up to 500 kWp @ 10 kWp per house, with the upper limit being inclusive of individual rooftop plants already installed by individual residents in that GHS/RWA at the time of installation of RTS for common activity.
|Note: *₹14,588/kW for the first 3 kW and ₹7,294/kW for the rest of the capacity up to 10 kW.
**The subsidy amount is fixed for rooftop solar systems above 10 kW capacity.
What is a solar panel?
A solar panel is a device that uses the sun’s power to induce electricity. Solar panels are made of different materials, including silicon, glass, and plastic. 400w solar panels can be mounted on roofs.
How does a 400 w solar panel work?
A solar panel captures the sun’s energy and converts it into electricity using silicon PV cells. The amount of sunlight that can enter a solar panel determines how much electricity it can generate. Solar panels work at their peak efficiency level when exposed to direct sunlight (not heat).
What can a solar panel with a 400-watt rating run?
A 400-watt solar panel can generate enough electricity to power various appliances and devices, depending on their energy consumption. This panel is the perfect size to run larger systems like water pumps, ACs, heating units, and more. It can power lights, small appliances, refrigerators, and electronic devices such as laptops, smartphones, and tablets.
What are the benefits of using a 400-watt solar panel?
The benefits of using a 400w solar panel include its affordability. Also, these solar panels generally induce more power than other solar panels. This means they can be used to power larger areas more effectively.