Sizing Calculator

Use EPEVER Off-Grid solar calculator tool below to estimate the required size of the components such as Solar PV modules, Inverter and charge controller.


Load calculator

List of the consumables

Please enter the list of your consumables, according to the following table

Please correct the following error(s):

  • {{ error }}

Appliance Name Running at the same time? Quantity AC Watts Peak AC Watts DC Watts Hours On per Day Watt-Hours / Day


Power consumption reference table

{{powerTable.title}} Add Custom Device





Add Load

Load calculator summary

Number of the equiment running togetder
{{numberOfEquipmentRunningTogether}}
Total AC power at once (W)
{{totalPowerAtOnce}}
Total daily power consumption (Watt-hours/day)
{{totalDailyPowerAC+totalDailyPowerDC}}
Total peak power (W)
{{totalPeakPower}}
Total daily power consumption (Watt-hours/day) – AC
{{totalDailyPowerAC}}
Total daily power consumption (Watt-hours/day) – DC
{{totalDailyPowerDC}}

Battery calculator

Battery specifications

Please enter the information regarding the batteries according to the table below.
Total AC load (Wh/day) {{totalDailyPowerAC}}
Total DC load (Wh/day) {{totalDailyPowerDC}}
DOD must be between 0.1 and 0.9
Number of parallel strings must be between 1 and 4
Temperature coefficient must be between 0.5 and 1.2
Days of autonomy
Inverter efficiency must be between 0.1 and 1
System voltage
Total battery bank capacity (Ah) {{batteryBankSize}}
Minimum capacity of each battery (Ah) {{minimumBatteryCapacity}}

Solar panel calculator

PV array (solar panels) specifications

Please enter the information regarding the PV array according to the table below.
Total daily load (Wh/day) {{totalDailyPowerACDC}}
Worst sun hours a day (Hours)
Total System efficiency must be between 0.1 and 1
Chosen solar panel power (WP)
Total PV array power (Wh) for a day with worst sun hours
Required # of solar panels

Final calculation results

In the following table, you will find the suggested size calculated for each component of your off-grid solar system
Results
Power Consumption
Total daily power consumption (Wh/day)
{{totalDailyPowerAC+totalDailyPowerDC}} Wh/day
Total AC peak power (W)
{{totalPeakPower}} W
System voltage
System voltage (V)
{{batteryCalculator.systemVoltage}} V
Batteries
Battery bank size (Ah)
{{batteryBankSize}} Ah
Maximum number of parallel strings
{{batteryCalculator.numberOfParallelStrings}}
Minimum capacity of each battery (Ah)
{{minimumBatteryCapacity}} Ah
Solar panels
Total PV array power (Wh) for a day with worst sun hours
{{requiredSolarPanels}} Wh
Chosen solar panel power (WP)
{{solarCalculator.chosenSolarPanelPower}} WP
Required # of solar panels
{{numberOfRequiredSolarPanels}}
Charge controller
Charge controller charging/discharge capacity (A) range
{{chargeControllerCurrentCapacityRange}}
Max PV power (W)
{{solarPanelPower}} W
Inverter
Minimum Continious power (W)
{{inverterMinimumContinuesPower}} W
Surge power (W)
{{inverterSurgePower}} W
Next Previous Show the final result