Here is the 20KW Hybrid Solar Energy System Products List:
Solar Panel: RSM40-8-400MB * 50pcs.
Solar Inverter: Deye 10KW hybrid inverter * 2sets
Solar Storage Battery: 40KWH LiFePo4 Battery (Stackable/Rackable)
Assume that there are 5 hours of effective sunlight in a day. During these 5 hours, we have 3.5h of strong sunshine and 1.5h of weak sunshine.
– 3.5 hours of peak sunlight (as you mentioned).
– 1.5 hours of less intense sunlight.
Let’s also assume the average efficiency of each solar panel as follows:-
– 67% of peak output during 3.5 hours of peak sunlight.
– 30% of peak output during 1.5 hours of softer sunlight.
During the 3.5 hours of intense sunlight, the panel will produce:-
0.8 x 400W x 50pcs x 3.5h = 56KWh
During the 1.5 hours of softer sunlight, the panel will produce:-
0.6 x 400W x 50pcs x 1.5 h= 18KWh
So the total energy produced by each panel throughout the day:-
56KWh + 18KWh = 74 KWh.
Considering that your use also includes night time, and you want to store power when there is no sun, you need batteries. You can match the battery according to the power used at night. The 20KW system is usually equipped with a 40KWh battery. You can also configure the battery capacity according to your actual use.
The above are simple mathematical calculations.
Besides, it is necessary to understand that the power generation of solar modules depends on many aspects, such as whether the azimuth and elevation angles are suitable, whether there are shelters around, and the lighting conditions and resources of the installation site etc.You need to know the installation latitude. The farther away from the equator, the more solar panels and batteries you need.