Sizing Morningstar Suresine Inverter and SunSaver MPPT Charge Controller
I want to take the opportunity of my next month vacation to install my first solar system in my sunny town of Niamey (NIGER West Africa ).
I will leave this installation to serve as showcase for educational purpose:
I am making a theoretical projection to use the Suresine at it maximum (300w load/24h).
But I found the battery bank too big for this tiny inverter.
Am I making wrong calculation? 1304 Ah battery bank at 12V seems too huge for tiny $250 inverter
Niamey, NIGER West Africa
Location : 13° 30' N 2° 12' W
insolation average 6.13 kW-hrs of insolation per square meter
Inverter Morningstar SI-300-220V > SureSine 300 Watt /12V Inverter (international) (Oversea project 50Hz/220v)
Charge Controller: Morningstar SS-MPPT-15L > SunSaver MPPT 15 Amp 12/24 Volt MPPT Charge Controller
>> Max load 300w for 24h
300wx24h = 7200 Wh
>> .92 efficiency inverter
>>50% of discharge
7826/0.5 = 15652 Wh
> 1 day of autonomy (lof of sun at Niamey)
15 652 Whx1 = 15652 Wh or 1304Ah bank at 12V