Solar panel power calculation method
1. First, calculate the number of watt hours consumed each day (including the loss of the inverter): if the conversion efficiency of the inverter is 90%, then when the output power is 100W, actual output power required should be 100W/90% = 111W; if used for 5 hours a day, the power consumption is 111 W x 5 hours = 555 Wh.
2. Second, calculate the solar panel: based on the effective daily sunshine duration of 6 hours, and taking into account the charging efficiency and loss during the charging process, the output power of the solar panel should be 555Wh/6h/70%=130W. 70% of this energy corresponds to the actual power used by the solar panel during charging.