PV System Sizing Calculator
by Aaron Lorenz
Inverter input voltage (DC):
Volts
Inverter output voltage (AC):
Volts
Total system output amperage (AC):
Amps
Inverter efficiency factor if known:
Hours per day of operation:
Hours
Days of backup power desired:
Days
Battery Amp-hour rating:
Ah
Battery chemistry type:
Non-Lithium
Lithium
Type
Hours of direct sunlight:
Hours
PV module rated Wattage (Pmax):
Watts
PV module rated Voltage (Vmpp):
Volts
PV module rated Amperage (Impp):
Amps
Charge controller type:
MPPT
PWM
Type
CALCULATE
RESET
RESULTS
Simplified
In-Depth
AC to DC Conversion
Estimated Watt-hour Demand
Amp-hour Calculation
Battery Bank Size
PV Array & Charger Sizing