Calculation Formula Of Solar Panels

- Mar 28, 2017 -

1. First, the number of watts per day consumed (including the loss of the inverter): If the conversion efficiency of the inverter is 90%, when the output power is 100W, the actual output power should be 100W / 90% = 111W; if used for 5 hours per day, the power consumption is 111W * 5 hours = 555Wh.

2. Calculate the solar panel: the daily effective sunshine time is 6 hours, and then take into account the charging efficiency and the loss of charging process, the solar panel output power should be 555Wh / 6h / 70% = 130W. 70% of which is the actual use of solar panels during charging.

Capacity of solar panels

AC light source: light source power * daily electricity time = solar panel power * annual average sunshine time * battery conversion rate * inverter efficiency

DC light source: light source power * daily electricity time = solar panel power * annual average sunshine time * battery conversion rate