590 W TOPCon solar panel with 144 cells. Voc 51.95 V · Isc 14.18 A · TcVoc -0.25%/°C.
Select the panel you want to replace
Voc
51.95 V
Vmpp
43.67 V
Isc
14.18 A
Impp
13.51 A
TcVoc
-0.25 %/°C
TcPmax
-0.29 %/°C
Pmax
590 W
Cells
144
The Ulica Solar UL-590M-144AHVN is a 590 W solar panel. Finding a compatible replacement requires matching the original electrical characteristics — particularly Voc, Vmpp, Isc, and temperature coefficients — to ensure safe operation within the same string.
Use the form above to find panels that match these specifications. Then verify the replacement in the String Compatibility Calculator with your inverter.
| Model | Power | Voc | Isc |
|---|---|---|---|
| UL-570M-144AHVN | 570 W | 51.14 V | 13.89 A |
| UL-575M-144AHVN | 575 W | 51.34 V | 13.93 A |
| UL-580M-144AHVN | 580 W | 51.59 V | 14.02 A |
| UL-585M-144AHVN | 585 W | 51.73 V | 14.11 A |
| UL-595M-144AHVN | 595 W | 52.16 V | 14.25 A |
The most critical specs to match are: cell count (must be exactly 144), Voc close to 51.95 V (within ±5%), and temperature coefficient TcVoc close to -0.25%/°C. If Voc differs significantly, the string voltage at extreme temperatures may shift outside the inverter's MPPT range. The replacement finder above pre-screens all candidates by these criteria.
A higher wattage panel usually has a higher Vmpp or Isc, which can affect string voltage and current. Small increases (up to 10–15%) are typically safe if the other electrical specs align. The replacement finder shows a compatibility score — 'Exact match' means the specs align closely. Always verify the replacement in the String Compatibility Calculator with your inverter before installation.
If the replacement has a significantly different Voc or Vmpp, the string voltage may shift outside the inverter's MPPT range, reducing energy production or causing faults. This effect is amplified at temperature extremes: at low temperatures, voltage rises by the TcVoc coefficient. The replacement finder automatically accounts for this — it scores candidates by how closely the electrical specs match the original Ulica Solar UL-590M-144AHVN.