In a number of homes around the world that currently have solar battery installed, some users are looking to reduce their electricity bills by transporting the excess power generated by the solar panels to the grid. Others choose to store the excess electricity and use the solar battery as a backup power source to provide electricity for normal household use in the event of a grid outage. So, what can we do with the electricity provided by solar battery during a power outage? Now let us come together to understand the relevant content.
Solar battery supply power to critical loads
If solar batterys store enough power, then they can even provide normal electricity for the whole family. However, in reality, most homes may not have solar batterys that store that much power. So, at this point of time we have to use the power selectively.
1. Critical loads: In some special families, there may be very sick family members who need to use medical equipment such as ventilators to maintain basic life activities, and this medical equipment are called critical loads at this time. Therefore, critical loads should never be turned off during blackout periods. Also, critical loads can work for a long time with the power stored in solar battery.
2. Base loads: Base loads are loads that allow you and your family to feel safe and comfortable, usually appliances such as refrigerators, lights, air conditioners, and routers.
A few solar battery are equipped with a corresponding app through which people can choose which essential loads the solar battery will provide during a power outage.
How long can a solar battery keep a loaded appliance working during a power outage?
The length of time a solar battery can keep a loaded appliance working is usually related to the capacity of the solar battery. According to market research, the capacity of most home-based solar battery is usually around 10 kWh. The power of an ordinary refrigerator is 90~180 watts, for safety reasons, the power of the refrigerator is calculated according to 200 watts, according to the following formula: kWh = (watt*hour)/1000, we can get the power consumed by the refrigerator per hour is 0.2 kWh. 10/0.2=50 means that the full power solar battery can make the ordinary refrigerator run normally for about 50 hours. Other load electrical appliances can be calculated according to the above calculation.
Can solar battery be used as the main power supply instead of the grid?
It depends on the situation. Due to different geographic locations, the intensity of solar radiation is different, which also leads to different power conversion by solar panels. In places where solar radiation is strong or where the grid is not widely available, many households will choose to install a larger number of solar panels and solar batterys to form an off-grid solar system, using solar batterys as the main power supply system. In life, however, most people will opt for a grid-connected or hybrid solar system, and most will still use the grid as their primary power supply.
In summary
Installing solar battery can indeed bring us basic protection during power outages, but during power outages, we also need to rationally allocate the amount of electricity stored in solar battery according to the degree of urgency.
