Vmp (Voltage at Maximum Power)
The voltage of a PV module when a load is applied to the string, i.e., the PV inverter is producing power.
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What does Vmp (Voltage at Maximum Power) mean?
The voltage of a PV module when a load is applied to the string, i.e., the PV inverter is producing power.
What should designers verify about Vmp (Voltage at Maximum Power) before selecting PV equipment?
Voltage at maximum power is the operating voltage where a module produces its rated maximum power under stated test conditions. In real systems it moves with irradiance, temperature, soiling, and mismatch, which is why MPPT and string sizing are important.
Practical design considerations
- Check the term against the current datasheet and installation manual, not only a product overview.
- Consider temperature, irradiance, string length, and equipment input limits before applying the value.
- Use the same units and test conditions when comparing products or calculations.
Related Tigo Support: For design, installation, commissioning, or troubleshooting details, see TS4 PV Module Compatibility.