As solar energy systems continue to grow in popularity and solar technology becomes more sophisticated, solar panels are becoming available in larger sizes. In the first few years, 300W solar panels were more common, and now, the most common solar panels for home use are 400W or 550W, or even 700 W. With the development of technology, it is believed that there will be even higher-power solar panels being produced to improve convenience for us.
As you should know, a 400W solar panel is a solar panel with an output power of 400W, which can output 400W of direct current. However, this is only the ideal state (temperature of 25℃, solar radiation of 1000W/m2), when the solar panel is installed on your roof, its power will be affected by various factors (such as the installation location, geographic environment, temperature, etc.) and decline.
The size of a 400W solar panel is usually 2066mm*1036mm and weighs about 15kg. Usually the higher the output power of a solar panel, the larger its size and weight. For example, the size of a 300W solar panel is 1640mm*992mm and the weight is about 13 kilograms. The size of a 550W solar panel is 2279mm*1134mm and the weight is about 27kg.
The amount of electricity output from a 400W solar panel per day depends on the local peak sunlight hours. If the local peak sunshine time is 4 hours, the 400W solar panel will produce about 1.6KWh of electricity per day. If the local peak sunshine duration is only 3 hours, then only 1.2KWh of electricity can be generated. This determines the equipment that can be run.
3.11 Electric Fan: The power consumed by electric fans of different models and different speeds is not the same. If the power of the fan is 40W/h, then it consumes 960W of electricity for 24h, and the 400W solar panel is enough to power it for a whole day.
3.12 Charging a laptop:
Different chargers have different efficiencies. Some power may be lost when charging the laptop using the power generated in the solar panel. Assuming that the laptop has a 60Wh battery, it is more than enough to charge it using a 400W solar panel.
3.13 Mini Fridge:
The power of a mini mini-fridge is about 40W~80W/h. A typical refrigerator is plugged in for about 8 hours a day, so it consumes about 320W~640W of power. using a 400W solar panel to power it is also enough.
Using 400W solar panels can be used as an outdoor energy storage power source to power some household equipment (rice cooker, lighting, kettle, etc.). This makes outdoor traveling more convenient and comfortable.
Many streetlights are run up by solar power. Using 400W solar panels to power streetlights is a good choice. The electricity can be stored and reused at night to generate electricity.
Using solar power to drive small water pumps for automated irrigation and water conservation can also reduce electricity consumption.
Use solar power to drive ventilation devices, heat preservation lamps and refrigeration equipment to provide a good living environment for livestock.
The above is just one 400W solar panel, if you have more than one solar power, it will provide you with more electricity, and even power for the whole family.
The answer is yes. Connecting multiple 400W solar panels together to form a larger solar system will provide sufficient power resources for your home, and all kinds of high-power appliances will be driven. Not only for home electricity, but we can also utilize the solar system to power electric cars, RV equipment, and more. People tend to install 3KW, 10KW, 15KW, or even 20KW solar systems. The exact wattage needs to be based on your family’s electricity needs, population size and the size of your home. If you install a large enough solar system as well as choose off-grid and hybrid solar systems, you will be able to go off the grid and be completely self-sufficient.
Number of 400W solar panels required = Daily power consumption (KWh)/Local peak sunshine hours/400
Assuming that the daily power consumption of about 20KWh, the local peak sunshine hours for 3 hours, then the family needs about 17 units solar panels, in order to meet the demand for electricity, and the need to install solar batteries for energy storage.
A 400W solar panel is enough to power a variety of small household appliances, if more than one 400W solar panel solar system, will be enough to power our entire family. This reduces the pressure on our electricity bills and provides a cleaner energy source for our lives.
