Solar String Calculator
Calculate panels per string from voltage limits and inverter specs.
Inputs
V
V
A
V
V
V
A
%/°C
°C
Results
Max Panels/String
13
Min Panels/String
4
Max Parallel Strings2
Voc at Min Temp40.7 V
Max String Voltage487.5 V
How to Use This Calculator
- Enter the panel's open-circuit voltage (Voc) and maximum power voltage (Vmp).
- Set the inverter's maximum DC input voltage and MPPT voltage range.
- Input the minimum and maximum site temperatures (for voltage derating).
- Review the minimum and maximum number of panels per string.
- Verify string configuration with the inverter manufacturer before installation.
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